• Transactions of the Korean Society of Mechanical Engineers B
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• v.27 no.4
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• pp.524-533
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• 2003

DBD(Dielectric Barrier Discharge) plasma in air is well established for the production of large quantities of ozone and is more recently being applied to aftertreatment processes for HAPs(Hazardous Air Pollutants). Aim of this work is to determine design and operating parameters of a hybrid air cleaning system. DBD and ESP(Electrostatic Precipitator) are used as nano particle charger and collector, respectively. Pelletized MnO$_2$ catalyst or activated carbon is used fer ozone decomposition or adsorption material. AC voltage of 7～10 KV(rms) and 60 Hz is used as DBD plasma source. DC - 8 KV is applied to the ESP for particle collection. The overall particle collection efficiency for the hybrid system is over 85 % under 0.64 m/s face velocity. Ozone decomposition efficiency with pelletized MnO$_2$ catalyst or activated carbon packed bed is over 90 % when the face velocity is under 0.4 m/s in dry air.

• Proceedings of the Korean Vacuum Society Conference
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• 2010.08a
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• pp.72-72
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• 2010

Recent development of organic solar cell approaches the level of 8% power conversion efficiency by the introduction of new materials, improved material engineering, and more sophisticated device structures. As for interface engineering, various interlayer materials such as LiF, CaO, NaF, and KF have been utilized between Al electrode and active layer. Those materials lower the work function of cathode and interface barrier, protect the active layer, enhance charge collection efficiency, and induce active layer doping. However, the addition of another step of thin layer deposition could be a little complicated. Thus, on a typical solar cell structure of Al/P3HT:PCBM/PEDOT:PSS/ITO glass, we used Li:Al alloy electrode instead of Al to render a simple process. J-V measurement under dark and light illumination on the polymer solar cell using Li:Al cathode shows the improvement in electric properties such as decrease in leakage current and series resistance, and increase in circuit current density. This effective charge collection and electron transport correspond to lowered energy barrier for electron transport at the interface, which is measured by ultraviolet photoelectron spectroscopy. Indeed, through the measurement of secondary ion mass spectroscopy, the Li atoms turn out to be located mainly at the interface between polymer and Al metal. In addition, the chemical reaction between polymer and metal electrodes are measured by X-ray photoelectron spectroscopy.

• Journal of the Society of Disaster Information
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• v.12 no.2
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• pp.122-129
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• 2016

In this study, a dual structured pipe for a preventive monitoring on a accident damage, a smartphone app program for a survey and a construction data collection and a server program for a real-time monitoring were developed. A pilot system was installed in the test field to analyze effects of a system developed in this study. The data for a damage prevention was detected by the attached sensors on the pipe. Exclusion was tested by the pressure sensors to be installed at regular intervals. The app and server programs was enabled to the real-time data collection and real-time monitoring linked by VRS survey equipments and a smartphone.

• Journal of Environmental Impact Assessment
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• v.21 no.2
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• pp.247-254
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• 2012

This paper seeks for the set-up plan in the reasonable target area of environmental assessment. Domestically, the target area of environmental assessment is set up by the adjustment of opinion collection about the assessment scope result of an environmental factor. In a foreign country, the boundary of the target area for a development project is established with the environmental, economical, and social viewpoint based on the standard for significantly environmental impact. Based on the analysis of the present condition at home and abroad, the first set-up plan for the reasonable target area of environmental assessment is the preparation of the detailed term definition related to the target area of environmental assessment. The second is the arrangement of the judgement standard for significantly environmental impact. The quantitative assesment item can apply the present standard or regulation, and the qualitative assessment item can establish the standard based on factual and objective data. The last is the preparation of the reference material or the guideline for deciding the initial target area by the judgement standard and determining the final target area by opinion collection in the stage of scoping.

• Journal of Fashion Business
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• v.20 no.2
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• pp.59-77
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• 2016

The purpose of this study is to use data from studies of headdresses which might be helpful for creating new fashion styles. Headdresses in 2010 S/S-2015 S/S Paris haute couture collections were analyzed in the following categories: years, season, brand, type, color, material, and image. The types of headdresses were categorized as hat, hood, decorative or complex types. The hat type was elegant with a modern style, and coexisted with an exaggerated avant garde style. The hood type wrapped around the head with many examples having a distinctive sculpture on top of the knot. The decorative type varied dramatically in form and materials. The complex type was a blend of all the other types with the designer's individuality being outstanding. The characteristics of headdresses were revealed first, as an enlargement of the materials category, second, as an expression of dramatic forms, and third, as complete coordination of the creative fashion image. The headdresses illustrate the designer's creativity in producing a variety of images. Henceforth they will be important as fashion items and independent designs in fashion styling.

• Journal of Families and Better Life
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• v.33 no.2
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• pp.35-51
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• 2015

The purpose of this study was to provide information for research about residents' opinion toward the physical environments of elderly facilities, through the analysis and investigation on the research methodology of foreign academic journal articles from 1990 to 2014. The study results were as follows: Firstly, purposive sampling was a large majority of both facilities and elderly residents. In quantitative studies, many researchers have conducted simple random, cluster, or stratified sampling. Diverse facilities in area, size, location, and etc. should be considered for participation. The qualifications for residents' participation should be considered as well, so that they all could have autonomy for study participation. Secondly, questionnaire and semi-structured guide were likely to be used in independent and resident care facilities. On the other hand in assisted living and long-term care facilities, open questions and visual material were used as well. A compatible scale should be developed so that elderly having variable functional level could participate independently in the study. Thirdly, in data collection process, compliance with research ethics and well trained interviewer's skill were important for residents' active responses and minimization of response errors. Enough research period of time and mixed study in data collection will decrease the response error.

• Korean Journal of Plant Taxonomy
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• v.49 no.4
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• pp.275-281
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• 2019

One key step in the plant restoration process is the collection of seeds from the field. For the selection of source populations of target plant species for translocation purposes (reintroduction or reinforcements), several approaches are possible. A practical method involves the use of data from reciprocal transplant studies. If no direct data are available, knowledge of population genetics and the phylogeography of the target species can serve as an alternative. In this short review, we briefly propose guidelines for those collecting seeds for plant species restoration based on population genetics theory, focusing on two main questions: Where does the plant material come from and how are sources designated, and how are seeds efficiently collected from local populations? While genetic data on a larger scale (phylogeography and population genetics) are needed to form a reply to the first question, similar data on a smaller scale (fine-scale genetic structures within populations) are necessary to shed light on the second issue.

• Journal of the Korea Fashion and Costume Design Association
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• v.19 no.1
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• pp.55-70
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• 2017

This study researched transition process of fur costume from ancient times to 20th century, extracted esthetic characteristics, and then understood how the esthetic characteristics appear in the recent fur collection. The result is as follows. First, magical meaning was revealed on leopard fur that ancient chief priests wore on top of shenti to symbolize immorality and fur tunics to which christian symbol was added in Byzantine. During middle age and the Renaissance, extravagance appeared on sable and amin jackets that the noble decorated to show off their high status. During the rococo age and mid-20th century, sensuality and elegance appeared on the fur dresses that the female body was emphasized. Second, in recent collection, extravagance appeared on over-sized and voluminous fox-coat, sexsuality and elegance were revealed through mink-dresses and jackets with soft touch and gloss that curved-silhouette was emphasized. In addition, practicality and functionality were shown through short length and light, soft material, and activeness was in the mink jacket to which functional elements such as zippers and rubber were added. To pursue uniqueness and fun, fox jackets were made with over-sized vivid green color. Besides, abnormality and vulgarness appeared through the fashion with abnormal and distracted images with ambiguous forms and new processing methods applied.

• Journal of Fashion Business
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• v.23 no.4
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• pp.24-37
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• 2019

This study focused on the fashion designer brand 'Alexander McQueen' to determine how butterflies are used in modern fashion through the sensibilities of certain designers. To this end, both a literature review and empirical research were conducted. First, we examined the origin of the word and appearance characteristics of butterflies based on prior research and a book, and also surveyed the tendencies used by the fashion designer brand Alexander McQueen. Second, out of 239 items announced by the fashion designer brand "Alexander McQueen" RTW (Ready to Wear) ranging from the S/S Collection in 2008 to the 2018-9 F/W collection, 73 pieces deemed to be fashion using butterfly images were collected through www.samsung.net and www.firstview.com, then analyzed based on timing and aesthetic characteristics. Results. The analysis by time period was divided into fantasy, handicraft, mix and match, and aesthetic characteristics shown in the order of compromise beauty, rhythmical beauty, and voluptuous beauty. The purpose of this study was to determine how butterflies are expressed in fashion based on the sensibility of a specific designer in modern fashion, the fashion designer brand 'Alexander McQueen'. Based on the results of this study, we hope that the information presented herein on fashion of natural images will serve as a basic material for similar research or design ideas as an example of designs based on butterfly images.

• The Research Journal of the Costume Culture
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• v.29 no.6
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• pp.763-778
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• 2021

The study aims to analyze the mixed characteristics of knit fashion design as demonstrated in Sacai's collection, which promotes hybrid and mesh-up fusion and proposes various knit design ideas. Standards for categorizing mixed phenomena of Sacai's knit design were established through a review of literature and data analysis. The study's data collection period was from 2012 to 2021, and a total of 174 items were analyzed. The following are the results. First is the fusion of traditional knit and contemporary styles expressed through de-constructive design; traditional knit styles are combined with contemporary styles through color, material, and knitting structure mixtures, such as mixing Northern European Aran, Fair Isle, Nordic, and Ropy knit. Second, the Sakai knit design combines male and female styles by mixing materials and details. A deconstructed knit cardigan was matched with androcentric pin-striped shirts worn over layered shirring skirts embellished with chiffon and lace. Third, everyday street fashion style is blended with a formal, elegant fashion style. For example, the front view has a typical everyday appearance, whereas the back view contains florid and decorated details. The style is expressed as a 360-degrees appellation, with one thing in the front and another in the back. Sacai's distinctive expressional characteristics include a mixed and de-constructive style characterized by unexpected design.