• 한국의상디자인학회지
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• 제16권3호
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• pp.219-238
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• 2014

This study attempted to investigate present condition and product planning of global eco-fashion brands that harmonize fashion and sustainability. As research subjects, this study selected 97 oversea fashion brands mentioned in books related to eco-fashion, Black(2011), Brown(2010), Fuad-luke(2009). As for research methods, materials and ethical practices of these selected 97 brands through literature data and their internet site homepages. This study analyzed oversea eco-brands collected 26 British brands, 22 American brands, 36 European brands such as Germany, France, Italy, Sweden, Spain, Finland and so on, except Britain and 13 other regions including Japan, India, Canada, Mexico, and New zealand. In conclusion, the product planning characteristics of these oversea eco-fashion brands can be summarized as follows; community and fair trade, ecological and slow design, recycle, reuse, redesign, and new eco-models. Firstly, brands of 'community and fair trade' manufactured products through fair trade and local community's artisan by ethical practices with organic fabrics. Secondly, brands of 'ecological and slow design' pursued timeless design and multi-functional design as luxury eco-fashion styles. They used organic textiles, hemp, bamboo, soya, tencell, sea cell, and self-sustaining plants. Thirdly, brands of 'recycle, reuse, redesign' aimed for upcycling high-end fashion and used vintage clothes, textile scraps, PET, parachutes, tires, safety belts, advertising banner and so on. In addition, brands of 'new models as eco-fashion' suggested zero-waste cutting, recycling over-printing technology, new sustainable business model, and ethical practices in the supply chain of the fashion industry.

• 대한토목학회논문집
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• 제32권1C호
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• pp.27-35
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• 2012

선반식 옹벽에서 선반은 옹벽에 작용하는 전체 수평토압의 크기를 줄여주며, 이로 인해 구조물의 전체적인 안정성이 향상된다. 이 연구에서는 아직 국내에서는 연구가 진행된 바 없는 선반식 옹벽에 작용하는 토압분포를 파악하고 캔틸레버식 옹벽에 작용하는 토압분포와 비교하기 위하여 모형시험을 실시하였다. 또한 흙 종류와 옹벽 배면의 굴착각도를 달리하여, 흙종류와 되메움 조건이 캔틸레버식 옹벽과 선반식 옹벽에 작용하는 토압의 변화에 미치는 영향을 파악하였다. 모형시험결과 선반의 설치로 인하여 발생하는 선반식 옹벽의 토압감소는 캔틸레버식 옹벽과 비교할 경우에 뚜렷하게 발생하였고, 옹벽에 발생하는 수평변위도 선반식 옹벽이 캔틸레버식 옹벽에 비해서 작게 발생하는 것으로 나타났다. 또한 캔틸레버식 옹벽에 비해서 선반식 옹벽의 전도파괴에 대한 안정성이 상대적으로 높은 것으로 나타났다.

• Food Science and Biotechnology
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• 제15권6호
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• pp.825-832
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• 2006

The effect of alginate coating in combination with an anti-browning agent on increasing the post-cutting shelf life and improving the quality of minimally processed apple cubes was studied during storage at room temperature for 5 days. A simple coating technique involving the chemical cross-linkage of alginate by calcium was used. Statistical-based experimental designs were applied to improve the quality of the alginate-coated apple cubes (ACAC). Plackett-Burman design was first used to determine the main factors influencing the preservation of the original weight, color, and texture of ACAC. Among these variables, alginate concentration ($X_1$), dipping time ($X_2$), and dipping temperature ($X_3$) significantly influenced the ACAC weight and color (confidence levels above 90%). Subsequently, the effects of the 3 main factors were further investigated by a central composite design. The polynomial models developed by response surface methodology were adequate to describe the relationships between the studied factors and the responses. Overall optimization conducted by superimposing the curves of the responses enabled the determination of an optimal range of the independent variables in which the five responses were simultaneously optimized. The point chosen as representative of this optimal area corresponded to $X_1=2.98%$, $X_2=0.85\;min$, and $X_3=55^{\circ}C$ and under these conditions the model predicted weight loss=0.522%, relative hardness=1.517, ${\Delta}E=1.423$, browning inhibition=93.403%, and ${\Delta}L=0.158$.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.57-57
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• 2017

Chrysanthemum is one of the most important floral crop in Korea produced about 7 billion dollars (1 billion for pot and 6 billion for cutting) in 2013. However, it is difficult to breed and to do genetic study because 1) it is highly self-incompatible, 2) it is outcrossing crop having heterozygotes, and 3) commercial cultvars are hexaploid (2n = 6x = 54). Although low-density genetic map and QTL study were reported, it is not enough to apply for the marker assisted selection and other genetic studies. Therefore, we are trying to make high-density genetic mapping using GBS with about 100 $F_1s$ of C. boreale that is oHohhfd diploid (2n = 2x = 18, about 2.8Gb) instead of commercial culitvars. Since Chrysanthemum is outcrossing, two-way pseudo-testcross model would be used to construct genetic map. Also, genotype-by-sequencing (GBS) would be utilized to generate sufficient number of markers and to maximize genomic representation in a cost effective manner. Those completed sequences would be analyzed with TASSEL-GBS pipeline. In order to reduce sequence error, only first 64 sequences, which have almost zero percent error, would be incorporated in the pipeline for the analysis. In addition, to reduce errors that is common in heterozygotes crops caused by low coverage, two rare cutters (NsiI and MseI) were used to increase sequence depth. Maskov algorithm would also used to deal with missing data. Further, sparsely placed markers on the physical map would be used as anchors to overcome problems caused by low coverage. For this purpose, were generated from transcriptome of Chrysanthemum using MISA program. Among those, 10 simple sequence repeat (SSR) markers, which are evenly distributed along each chromosome and polymorphic between two parents, would be selected.

• 한국지반공학회지:지반
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• 제14권5호
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• pp.191-204
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• 1998

플라이 애쉬의 폐기물 매립장 대용 차수재로서의 적용성을 평가하기 위하여 실내 실험과 모델 연구를 실시하였다. 실제의 매립장 차수층이 불포화 상태일 수 있는 점을 고려하여, 대용 차수재와 기존의 점토 차수재에서의 포화 및 불포화 상태에서의 물 흐름 특성을 비교하였다. 차수층에서의 오염물 이동 특성을 연구하기 위하여 오염물을 이용한 회분실험을 실시하였으며, 이때 폐놀을 대표 오염물질로 사용하였다. 모델은 물질 수지에 기초하였으며, 유한 차분법과 predictor-corrector법을 이용한 수치 해법으로 풀었고, 연립 미분방정식을 다루는테는 sequential method를 이용했다. 연구 결과 대용 차수재는 기존 차수재보다 폐놀 차단 능력이 더 크고 또 불포화대에서의 차수능력도 더 크다는 것을 알 수 있었다. 또한, 본 연구에서 고려된 흐름조건에서는 차수층을 포화대로 해석할 경우 통과하는 물의 양이 약간 과소평가되고 폐놀 차단 능력은 매우 과소평가됨을 알 수 있었다.

• 한국안전학회지
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• 제15권1호
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• pp.72-79
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• 2000

In recent, occupational diseases in harmful working places become a social issue. It is the well-known fact that a respiration in polluted working places exert a serious effect on health of workers. Accordingly, the cutting off contaminants air originally is the best way to improve working environments. In these cases, ventilation systems should be essentially installed to dilute or exhaust the contaminated indoor air. In this study, we investigated the characteristics of ventilation system of the noxious gas in working indoor places with natural ventilation by using COMET. The numerical simulations were carried out the natural ventilation with two phase(air, dust). For turbulent flow, Reynolds stresses were closed by the standard $\kappa$-$\varepsilon$ model. The results are as follows ; 1) In the natural exhaust in the working place, the flows of the central region have a more rapid velocity vector than the right and left one. 2) Numerical results show that the distribution of contaminants concentration have greater influence on convection than the case of diffusion by government of velocity vectors. 3) To observe the velocity variation with distance, three location of distance are considered. As results, it shows that the velocity are 0.075(m/s) at y=5(m), 10(m) and mean concentration are raised 10.6% at y=5(m), 10(m). 4) We have presented the useful data for the adequate counterplan in the harmful working places by carrying out the various investigation of the natural ventilation.

• 대한간호학회지
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• 제40권5호
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• pp.611-619
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• 2010

The purpose of this study was to examine the effects of exercise on muscle weight and Type I and II fiber cross-sectional area of affected and unaffected hindlimb muscles in rats with neuropathic pain induced by unilateral peripheral nerve injury. Methods: Neuropathic pain was induced by ligation and cutting of the left L5 spinal nerve. Adult male Sprague-Dawley rats were randomly assigned to one of two groups: The Pain+Exercise (PE) group (n=21) and the Sham+Exercise (SE) group (n=20). All rats had 28 sessions of treadmill exercise at grade 10 for 30 minutes, twice/day at 10 m/min for 14 days. Body weight, food intake and activity were measured every day. At 15 days all rats were anesthetized and soleus, plantaris and gastrocnemius muscles were dissected. Muscle weight and Type I, II fiber cross-sectional area of the dissected muscles were measured. Results: The PE group showed significant increases (p<.05), as compared to the SE group for body weight and total diet intake, muscle weight of the unaffected soleus and plantaris, and in Type I and II fiber cross-sectional area of unaffected three muscles and affected plantaris. Conclusion: Exercise for 14 days attenuates unaffected soleus, plantaris and gastrocnemius muscle atrophy in neuropathic pain model.

• 한국전산유체공학회지
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• 제14권1호
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• pp.1-8
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• 2009

To control the coating thickness of zinc in the process of continuous hot-dip galvanizing, it is known from early days that the gas wiping through an air knife system is the most effective because of the obtainable of uniformity of coating thickness, possibility of thin coating, working ability in high speed and simplicity of control. But, the gas wiping using in the galvanizing process brings about a problem of splashing from the strip edge for a certain high speed of coating. Also, it is known that the problem of splashing directly depends upon the galvanizing speed and nozzle stagnation pressure. In theses connections, in the present study, we proposed two kinds of air knife systems having the same expansion rate of nozzle, and the jet structures and coating thicknesses from a conventional and new proposed nozzles are compared. In numerical analysis, the governing equations consisted of two-dimensional time dependent Navier-Stokes equations, standard k-e turbulence model to solve turbulence stress and so on are employed. As a result, it is found that it had better to use the constant rate nozzle from the point view of the energy saving to obtain the same coating thickness. Also, to enhance the cutting ability at the strip, it is advisable to use an air knife with the constant expansion rate nozzle.

• 대한기계학회논문집
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• 제17권6호
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• pp.1412-1422
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• 1993

본 연구는 각주형 금형부품을 절삭가공할때 부품의 설계데이터로부터 부품의 형상적인 특징을 추출하여 공정설계시스템인 MOLDCAPP과 작업설계시스템인 COPS에서 사용할 수 있는 정보를 생성함으로써 CAD/CAM의 연결을 자동화할 수 있는 특징형상 인식 시스템을 개발하는 연구로, 특징형상 인식기법의 창안보다는, 가용한 기술의 장 점을 사용하여 각주형 공작물의 기계 절삭가공으로 생성될 수 있는 형상을 특징형상으 로 정의하고 ACIS로 설계된 CAD데이터로부터 정의된 특징형상을 추출하여 각 특징형상 들의 형상 데이터를 결정함으로써 MOLDCAPP, COPS 등의 공절설계시스템의 입력데이터 를 생성할 수 있도록 Fig.1과 같이 설계하였다. 특히 PART시스템과 같이 인식대상이 포괄적이지 않으나, 금형부품상의 특징형상으로 범위를 축소하고 금형부품의 가공특징 을 고려하여 인식규칙을 단순화함으로써 금형가공공정의 CAD/CAM연결에 이용될 수 있도록 하였다.

• 기술혁신연구
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• 제24권3호
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• pp.81-105
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• 2016

본 연구는 ICT산업의 연구개발투자에 따른 비용저감 효과를 계측하는데 그 목적이 있다. 일반적으로 연구개발투자는 제품혁신과 공정혁신을 유발하고, 또 이들은 각각 매출증대와 비용저감 효과를 견인하는 것으로 알려져 있다. 그러나 기 수행된 실증연구들을 살펴보면, 그 대부분이 연구개발투자의 매출증대 기여부분에 초점을 두고 있다. 이에 본 연구는 최근 주목받고 있는 ICT산업을 중심으로 연구개발투자의 비용저감 효과를 분석해 보았다. 이를 위해 초월대수 비용함수와 비용점유율 방정식을 설정하였으며, SUR방법을 통해 실증적으로 분석하였다. 그 분석결과, 연구개발투자에 따른 총비용의 감소효과는 유의한 것을 확인할 수 있었다. 추가적으로 연구개발투자와 각 생산요소들 간의 관계를 살펴보았는데, 연구개발투자와 중간투입은 상호 대체관계, 노동 및 자본과는 보완관계인 것으로 나타났다.