• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.225-225
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• 2017

This study is to investigate the effect of split application and adapted fertilization application cultivation in stable medicinal herbs production of Acorus graminens S. And it accomplished one's purpose to GAP guide manual established standard method of cultivation technology, contribute to the enlargement of farm's income. Method of fertilization application were conducted under five condition compose to standard application(N-P-K-Compost: fermented mixed oil cake fertilizer applied at $4-2-6-300kg.10a^{-1}$, twofold application(N-P-K-Compost applied at $8-4-12-600kg.10a^{-1}$) cultivation. Compost (fermented mixed oil cake fertilizer) and fused phosphate applied at 100% of basal fertilizer in April 14. The split application level of standard application and twofold application(N-K) applied at 100%, 50%, 40% of basal fertilizer in April 14, 50% and 40% of top dressing were three times application (N-K) in June 1, July 15, August 15, 25% and 20% respectively. Transplanting with Naju varieties in May 12 by growing pot seedling for 40 days in 2015. Planting density were spaced 30 cm apart in rows 30 cm apart with black vinyl mulching on open cultivation. Plot design randomized block 3 repetition. Therefore, growth characteristics by 50% and 40% of top dressing were three times application (N-K) compared to standard application and twofold application (N-K) applied at 100% basal fertilizer, aerial part as a result were so many such amount of growth as number of leaf per plant, etc., Length of diameter and main root of subterranean part growth increment rising highest. Dried roots yields treated standard fertilizer 100% application($250kg.10a^{-1}$) compared to 100% from twofold application (N-K) applied at 50% basal fertilizer, 50% and 40% of top dressing were three times application increased by 16%, 20%. respectively.

• 대한공간정보학회지
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• 제23권4호
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• pp.35-41
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• 2015

감정평가방법에는 수익방식, 원가방식, 비교방식이 있다. 본 연구는 감정평가방법 중 토지의 가격을 평가할 때 주로 사용하는 비교방식을 수치화하여 감정평가 시 적용할 수 있는 방법을 제시하는 것이다. 비교방식은 부동산의 가치를 거래사례부동산과 평가대상 부동산의 시간적 격차, 공간적 격차, 시공간적 격차를 비교 조정함으로써 사례 부동산 가격으로부터 대상 부동산 가격을 산정하는 것이다. 감정평가 실무에서는 대체적으로 토지의 경우에 비교 방식을 사용한다. 사례를 기준으로 할 때 사례가격, 시점수정, 지역수정, 개별요인으로 가치를 평가하며 공시지가기준의 경우 공시지가, 시점수정, 지역수정, 개별요인으로 평가한다. 이 중 개별요인은 개별적 특성을 비교하는 중요한 과정으로서 감정평가사의 주관적 판단이 개입 할 수 있는 요소이다. 전문가인 감정평가사의 판단이 대체적으로 정확하지만 주관적인 판단이기 때문에 감정평가사에 따라 의견 차이가 있을 수 있으므로 감정평가 분쟁이 일어나기도 한다. 본 논문에서는 개별요인의 구성요소인 가로조건, 접근조건, 획지조건을 GIS분석을 통하여 감정평가의 주관적 판단을 수치화하여 적용할 수 있는 방법을 제시하고자 한다.

• 한국엔터테인먼트산업학회논문지
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• 제15권4호
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• pp.243-254
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• 2021

이 연구는 교육기관 내 갑질 행태를 분석함으로써 민주성과 평등의 가치가 존중받는 교육 풍토를 조성하고 보다 나은 교육과 평등한 사회를 조성하고자 교육기관의 갑질의 유형 중 권한남용 행태를 통합연구방법을 활용해 분석하였다. 먼저 문헌 연구를 통해 갑질의 개념과 원인을 분석한 후 질적 연구를 통해 권한남용 유형에 따른 교육기관 구성원들의 사례를 탐색해 시사점을 도출하였다. 그 결과 교육기관 내 권한남용 사례는 협의 없는 업무추가와 업무전가, 지위를 이용한 강압적 지시, 법령과 지침을 위반한 지시, 관행, 개인 편의를 위한 사적 지시, 특정기관 또는 특정인 혜택을 위한 지시, 인격·권리·사생활 침해로 나타났다. 이를 해결하기 위한 방안으로 권한남용에 대한 합의된 기준 마련, 권한남용에 대한 갈등과 불만을 중재할 제도적 장치 마련, 기관 내 최고의 결기구 의무설치 법제화, 모든 정보의 적극적이고 투명한 공개, 감성행정으로 전환 등을 제시하였다. 교육기관 내 갑질 행태를 분석하고 이를 줄이기 위한 방안을 모색하는 것은 조직 구성원 간 상호 존중과 소통의 문화를 조성해 교육의 민주성과 평등성을 이끌 수 있는 초석이 될 것이다. 이 연구를 시작으로 후속 연구들이 진행되고 교육기관 내 갑질이 줄어들어 더 나은 교육환경이 조성되길 기대한다.

• 한국항해항만학회지
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• 제29권7호
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• pp.627-634
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• 2005

Gunsan-Janghang Harbor is located at the mouth of Gum River, on the central west coast of Korea The harbor and coastal boundaries are protected from the effects of the open ocean by natural coastal islands and shoals due to depositions from the river, and two breakwaters. The navigation channel commences at the gap formed by the outer breakwater and extends through a bay via a long channel formed by an isolated jetty. For better understanding and analysis of wave transformation process where a wide coastline changes appear due to on-going reclamation works, we applied the spectral wave model including wind effect to the related site, together with the energy balance models. This paper summarizes comparisons of coastal responses predicted by several numerical wave predictions obtained at the coastal waters near Gunsan-Janghang Harbor. Field and numerical model investigations were initially conducted for the original navigation channel management project. We hope to contribute from this study that coastal engineers are able to use safety the numerical models in the area of port and navigational channel design.

• 한국환경복원기술학회지
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• 제6권1호
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• pp.28-33
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• 2003

In this study, we observed air temperature to make clear that land coverage condition and stand form has a certain relationship to air temperature during the night in various green space. And with revolution analysis, we interpreted relationship of air temperature distribution in the green space, The way of analysis is this land coverage rate and air temperature, of number of tree volume of tree air temperature. With this experimental result, we can propose green plan, which is taking into consideration lower effect of air temperature. In this result, lower zone is formed in forest and water area, higher zone is formed in paved surface and barren ground. but this gap is a little. arbor+subarbor area, in the point of water area surrounded stand is formed relative lower air temperature. As a result to make up efficiency lower air temperature area, it is needed to make water area which has surrounded forest, and it is needed to make stand form lower air temperature 2~3 layer forest. In order of arbor, subarbor, shrub, the lower air temperature is more effect.

• 전자통신동향분석
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• 제28권4호
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• pp.132-145
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• 2013

중소기업 제품이 글로벌 시장을 선도하려면 기술혁신과 시장 경쟁력을 갖는 혁신 제품개발 지원을 위한 인프라 구축은 필수적이다. 다시 말해서 기술 및 제품개발에 일련의 신제품 개발 프로세스를 기업들이 잘 시행하고, 기술혁신 및 제품개발의 성공률 제고를 위해서는 기존 기업지원 프로그램을 보강할 필요성이 있다. 또한 개발된 원천기술과 상용화 간의 간극(gap)을 줄이고 기술개발의 연쇄적인 문제점을 해소할 R&BD(Research & Business Development)인프라를 구축하여 기술/제품에 대한 지식을 폭넓은 분야의 전문가 또는 사용자들과 공유하고 완성도가 높은 시제품 제작으로 기업의 한정된 내부자원과 상품성을 보완할 필요가 있다. 본 논문에서는 개발환경과 자원이 열악한 중소기업의 기술개발-사업개발-시장개발이 통합적으로 고려되어 활용될 수 있는 신개념의 시스템 도입 필요성과 위의 제반 문제점들을 해결할 수 있는 소셜기반 manufacturing platform과 제품 제작 인프라 및 기업지원, marketing 등을 지원하는 신 에코시스템인 CSP(Crowd Sourcing Platform) 구축 및 서비스 디자인에 대해 논한다.

• Structural Engineering and Mechanics
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• 제67권5호
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• pp.427-437
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• 2018

Structural pounding is commonly observed phenomenon during major ground motion, which can cause both structural and architectural damages. To reduce the amount of damage from pounding, the best and effective way is to increase the separation distance. Generally, existing design procedures for determining the separation distance between adjacent buildings subjected to structural pounding are based on approximations of the buildings' peak relative displacement. These procedures are based on unknown safety levels. The aim of this research is to estimate probabilistic separation distance between adjacent structures by considering the variability in the system and uncertainties in the earthquakes characteristics through comprehensive numerical simulations. A large number of models were generated using a robust Monte-Carlo simulation. In total, 6.54 million time-history analyses were performed over the adopted models using an ensemble of 25 ground motions as seismic input within OpenSees software. The results show that a gap size of 50%, 70% and 100% of the considered design code for the structural periods in the range of 0.1-0.5 s, leads to have the probability of pounding about 41.5%, 18% and 5.8%, respectively. Finally, based on the results, two equations are developed for probabilistic determination of needed structural separation distance.

• 전기학회논문지
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• 제65권10호
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• pp.1694-1696
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• 2016

Present thin film solar cells with hydrogenated amorphous silicon oxide (a-SiO:H) as an absorber suffer from low fill factor(FF) of 61~64 [%] in spite of its benefits related to high open circuit voltage ($V_{oc}$). Since degraded quality of a-SiO:H absorber by alloying with oxygen can affect the FF, we aimed to achieve high photosensitivity by minimizing $CO_2$ gas addition. Improving optical gap($E_{opt}$) has been attained by strong hydrogen dilution combined with lowering substrate temperature down to 100 [$^{\circ}C$]. Small amount of the $CO_2$ was added in order to disturb microcrystalline formation by high hydrogen dilution. The developed a-SiO:H has high photosensitivity (${\sim}2{\times}10^5$) and high $E_{opt}$ of 1.85 [eV], which contributed to attain remarkable FF of 74 [%] and high $V_{oc}$ (>1 [V]). As a result, high power conversion efficiency of 7.18 [%] was demonstrated by using very thin absorber layer of only 100 [nm], even though we processed all experiment at extremely low temperature of 100 [$^{\circ}C$].

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2002년도 추계학술대회논문집
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• pp.363-368
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• 2002

A practical implementation method of squeeze-film aeroelastic disk vibration damping and its practical design performance are presented to provide a solution method to meet the tight TMR(Track Mis-Registration) design budget of high-TPI HDDs. Most previous research results are mainly based on the component-level study in the 'open-cover state' which is far from the realistic operation HDD condition. In this study, the squeeze-film disk damping effect is widely investigated under the realistic drive-level condition of 'enclosed-cover state.' It is found that the proper aeroelastic gap(s) between disk(s) and adjacent surface(s) to give significant vibration reduction in the enclosed HDD operating conditions can be achieved not only by classical well-known squeeze-film damping gaps such as very small 0.0x-millimeter level gaps which are not practically implementable in mass-production HDDs, but also by a few 0.x millimeter which is possible for designing realistic HDD design. The various experimental results including drive-level PES are also presented to prove feasibility of the optimal disk damper design for 93kTPI HDDs.

• Journal of Electrical Engineering and Technology
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• 제3권1호
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• pp.88-93
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• 2008

The electromagnetic parameters of a permanent magnet synchronous motor (PMSM) such as the open load permanent magnet flux, d axis reactance $X_d$, and q axis reactance $X_q$, are most essential to the performance analysis and optimization design of the motor. Based on the numerical analysis of the 3D electromagnetic field, the three electromagnetic parameters of permanent magnet synchronous motors with U form interior rotor structures are calculated by FEA. The rules of the leakage coefficient and reactance parameters changing with the air gap length, permanent magnet magnetism length, and isolation magnetic bridge dimensions in the rotor are given. The calculated values agree well with the measured values. The FEA results are integrated with the self compiled electromagnetic design program to optimize the prototype motor. The tested performances of the prototype motor prove that the method is suitable for the optimization of motor structure.