• International Journal of Industrial Entomology and Biomaterials
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• 제37권2호
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• pp.105-108
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• 2018

Recently matured silkworm powder was developed by RDA. In this study, the effect of pulverizing method on the particle size of matured silkworm powder was examined. FESEM was performed to observe the morphology and to measure the particle size of silkworm powder. Particle morphology of air-jet mill pulverized powder was round and smooth, however, those of roller-mill and hammer-mill pulverized mature silkworm was more harsh and square. Particle size was varied with pulverizing technique as follows; $1.1{\mu}m$ (air-jet mill), $10{\mu}m$ (roller mill), and $120{\mu}m$ (hammer mill), respectively. A proximate analysis results of air-jet mill powder showed that crude protein, crude lipid, crude fiber, and ash was 73%, 12%, 1.95%, and 3.4%, respectively. According to our results, air-jet mell technique might be used to make a tiny matured silkworm powder.

• 한국토양비료학회지
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• 제48권6호
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• pp.618-627
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• 2015

Soil salinity is the most critical factor for crop production at reclaimed tidal saline soil. Subsurface drainage system is recognized as a powerful tool for the process of desalinization in saline soil. The objective of this study was to investigate the effects of subsurface drainage systems on soil salinity and corn development at Saemangeum reclaimed tidal saline soil. The field experiments were carried out between 2012 and 2014 at Saemangeum reclaimed tidal land, Buan, Korea. Subsurface drainage was installed with four treatments: 1) drain spacing of 5 m, 2) drain spacing 10 m, 3) double layer with drain spacing 5 m and 10 m, and 4) the control without any treatment. The levels of water table showed shorter periods above 60 cm levels with the deeper installation of subsurface drainage system. Water soluble cations were significantly greater than exchangeable forms and soluble Na contents, especially in surface layer, were greatly reduced with the installation of subsurface drainage system. Subsurface drainage system improved biomass yield of corn and withering rate. Thus, the biomass yield of corn was improved and the shoot growth was more affected by salinity than was the root growth. The efficiency of double layer was not significant compared with the drain spacing of 5 m. The economic return to growers at reclaimed tidal saline soil was the greatest by the subsurface drainage system with 5 m drain spacing. Our results demonstrated that the installation of subsurface drainage system with drain space of 5 m spacing would be a best management practice to control soil salinity and corn development at Saemangeum reclaimed tidal saline soil.

• 한국유기농업학회지
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• 제19권spc호
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• pp.178-181
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• 2011

The test was carried out at a test field at the Wanju Eco-Farming Complex from 2009 to 2010 to figure out the proper application of fertilizers when growing rice at the Eco-Farming Complex. The result showed that when compared to the basal application of compost as fertilizer, applying supplementary compost after natural re-seeding of chinese milk vetch (CMV) helped balance soil nutrition and maintained rice yields.

• 문화기술의 융합
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• 제8권5호
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• pp.201-206
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• 2022

본 연구는 완주군 문화도시 정책관련 기초자료 및 방향성을 제공하는 연구이다. 즉, 본 연구는 문화도시 정책에 성공한 국내사례 및 해외사례를 문헌사례 위주로 분석하여 정책적 시사점을 제공하는데 목표가 있다. 따라서 본 연구의 구성은 제1장 서론, 제2장 문화도시 정책 고찰, 제3장 국내사례 분석, 제4장 해외사례 분석, 제5장 결론 순이다. 이중, 제2장 문화도시 정책 고찰 부분은 문화도시의 개념, 유형, 정책관련 조성사업을 다뤘으며 제3장 국내 사례분석은 서울시 도심 재 창조 프로젝트, 서울시 청계천 복원사업, 창원시 공공 미술 프로젝트 사업을 분석하였다. 제4장 해외 사례분석은 일본 가나자와 시민예술촌, 일본 요코하마 Bank ART 1929, 독일 Zollverein의 사례를 분석하여 완주군 문화도시의 성공적인 정책 방향성 및 기초자료를 제공하는데 있다.

• 농촌계획
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• 제16권4호
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• pp.45-51
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• 2010

The purpose of this study is on monitoring complementary forest of village according to restoration project. Accordingly, this study was accomplished in case of Dubang complementary forest of village in Wanju-gun which was indicated as beautiful village forest by Korean government. This study describes the restoration project and identifies the change of species diversity and succession through monitoring. For this, vegetational survey was performed in 2003 and 2010. D(Dominant degree) and S(Sociability degree) was measured by Brown-Blanquet's method. The results demonstrate significant increase of species diversity and progress of natural succession. It means ecological structure and function have improved. Also ecological disturbance appears here and there on account of insufficient management.

• Animal cells and systems
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• 제2권2호
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• pp.183-185
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• 1998

A new acari species, ,Amblyseius arcus n. sp., is described from Korea. This species was collected on the deciduous plants, Quercus acutissima, Morus alba, and Viburnum wrightii at Whasim-ri, Soyang-myon, Wanju-gun, Chollabuk-do, Korea.

• 대한수학회보
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• 제33권3호
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• pp.335-342
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• 1996

Suppose $k$ is a field and $M$ is the set of all $m \times n$ matrices over $k$. If T is a linear operator on $M$ and f is a function defined on $M$, then T preserves f if f(T(A)) = f(A) for all $A \in M$.

• Communications for Statistical Applications and Methods
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• 제8권3호
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• pp.753-765
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• 2001

We suggest a quantitative conditional unrelated question model that can be used in obtaining more sensitive information. For whom say "yes" about the less 7han sensitive question .B we ask only about the more sensitive variable X. We extend our model to two sample case when there is no information about the true mean of the unrelated variable Y. Finally we compare the efficiency of our model with that of Greenberg et al.′s.

• Communications for Statistical Applications and Methods
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• 제3권2호
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• pp.169-174
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• 1996

In the present paper an attempt has been made to improve the Mangat Strategy (1994) in view of the protection of privacy, variance and the range of .pi.. Conditions are obtained under which the proposed model is more efficient than those of warner (1965) and Mangat and Singh(1990).

• 농촌계획
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• 제21권2호
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• pp.163-175
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• 2015

This study aimed to analyze factors of importance and performance picked by customers of Bibijeong, a farm restaurant operated by the local community of Wanju-gun. Major points include: Recognition paths mostly were word of mouth and mass media, types of visit were in the company of friends, family members or work colleagues, and purposes of visit included consumption of meal and identifying features of the restaurant. Secondly, factor analysis showed that level of facility, atmosphere/cleanness, diversity of menu, employees, ingredients and network. The Cronbach Alpha coefficient was +0.6. Thirdly, average of importance of factors was 3.861 while average performance was 3.429. IPA analysis showed that employee(communication, customer contact) in the first quadrant proved the need for fast improvement through training. Atmosphere/cleanness (interior atmosphere, table clean, kitchen cleanliness, clean dishes, interion design) and employee(proficiency, menu recognition), foodstuff(freshness, origin, safety) in the second quadrant showed that the marketing strategy of improvement as well as maintaining current status is needed, including regular training and hygiene inspection. The third quadrant contains facilities(disability, baby, fire protection) and food menu(food packing, various menu, creative menu, menu description), network(village economic links), which showed the need for gradual improvement. The forth quadrant contains network(sights's near contains. The results so far can be summed into the statement that overcoming the basic functionality of providing meals and linking the restaurant with local attractions and local economy would be need, as well as building up the image of unique farm restaurant with local features, so that Bibijeong can serve as the centerpiece of community and foundation of exchange with other areas.