• 수산경영론집
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• 제50권2호
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• pp.57-74
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• 2019

This study is aimed to evaluate the technology levels of shellfish farming in southern coast of Korea and status analysis on research of shellfish aquaculture. With achieving these objectives, it will be possible to present the direction of shellfish farming research and related project. Five major breed of shellfish aquaculture that would be adaptive and sustainable were proposed through consultation and agreement with professional group with more than 15 years of working experience. Moreover also evaluated that levels of technology, industry and market are also evaluated. The evaluation result of the expert group showed that the shellfish farming level occupied the third place in comparison with the US, Japan, Europe, and China. It is estimated that about 13~14 years will reach the level of the highest on average. In addition, most countries are expected to grow by about 10% on average over the next five years. Based on the result of the analysis of 670 research projects (2008~2017), there was little research on climate change and shellfish aquaculture. Besides some of shellfish have not been studied since 2008 and 2013, so it can be mentioned as a future task to be overcome.

• 대한음성학회지:말소리
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• 제59호
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• pp.27-51
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• 2006

For speech recognition systems, rejection function as well as decoding function is necessary to improve the reliability. There have been many research efforts on out-of-vocabulary word rejection, however, little attention has been paid on non-target sentence rejection. Recently pronunciation approaches using speech recognition increase the need for non-target sentence rejection to provide more accurate and robust results. In this paper, we proposed filler model method and word/phoneme detection ratio method to implement non-target sentence rejection system. We made performance evaluation of filler model along to word-level, phoneme-level, and sentence-level filler models respectively. We also perform the similar experiment using word-level and phoneme-level word/phoneme detection ratio method. For the performance evaluation, the minimized average of FAR and FRR is used for comparing the effectiveness of each method along with the number of words of given sentences. From the experimental results, we got to know that word-level method outperforms the other methods, and word-level filler mode shows slightly better results than that of word detection ratio method.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2008년도 추계학술대회논문집
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• pp.385-386
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• 2008

Dynamic stability of the vehicle rearview mirror is an important factor for the driver's visual perception (image blur) when driving down the road and regarded as one of the vehicle level N&V performance of visible component vibration. Several projects within GM identified a set of objective metrics and validation methods that can replace current existing subjective evaluation of mirror stability. This paper presents objective evaluation results for assessing dynamic stability (angle of rotation) of the vehicle rearview mirrors using both in-lab FRF measurements and on-road testing.

• 산업기술연구
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• 제27권B호
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• pp.59-64
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• 2007

This study introduces an environmental noise evaluation procedure and results for a wind turbine (W/T) system. Test and evaluation are required by the international standard IEC 61400-11 in the aspect of environmental effect. Test and evaluation are performed on U-50 WT model which is first developed by the domestic W/T manufacturer. W/T test model is under operation in Daekwanryung wind test site. An integrated monitoring system in the test site is utilized for the evaluation. With the noise signal, meteorological data and W/T operational data are monitored in real time by the integrated monitoring system using LabVIEW. From the measured noise data, acoustic power level are estimated and compared with those of other similar size WT under the wind speeds required by international standard.

• 전력전자학회논문지
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• 제27권3호
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• pp.221-227
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• 2022

The reliability improvement of PV systems is an important factor in reducing the cost of PV energy because it is closely related to the annual energy production as well as the maintenance cost of PV systems. The reliability of PV inverters plays a key role in the reliability of PV systems because it is regarded as one of the most reliable critical parts of PV systems. The lifetime evaluation of PV inverters considering the mission profile in the design phase plays an important role in reliability design to ensure the required lifetime of PV inverters. In this paper, the lifetime of representative single-phase T-type and I-type NPC inverters are comparatively evaluated by considering the mission profile of a PV system recorded at Iza, Spain. Furthermore, the effect of the pulse width modulation methods on the lifetime is also discussed. The lifetime evaluation of PV inverters is performed at the component-level first and then the system level by considering all power devices.

• 대한산업공학회지
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• 제41권5호
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• pp.481-487
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• 2015

In the product development stage, it is very important to ensure demanded quality level before moving to the full-scale manufacturing. For example, in developing guided weapons, live-fire tests are required to verify the final performance of the weapons which are very expensive. The quality evaluation of the guided weapons needs destructive testing, which makes it necessary to test as small number of samples as possible. This paper presents sampling inspection plans and calculating system for finite population guided weapons, which can meet the demanded quality level and confidence level with the minimum number of performance tests. The result of this paper can be useful for any kind of costly destructive testing.

• 농촌계획
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• 제9권3호
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• pp.41-46
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• 2003

The study was focused on setting priority for future core technologies in rural development and resources using AHP. The technologies were derived by Delphi method. Evaluation criteria for the priority setting were decided as 'technology', 'market oriented', and 'public concerns' by council. The future core technologies were divided as four groups by importance and R&D level. Technologies in upper two groups were considered in the study. Group I had high importance and high R&D level. Group II had high importance and lower R&D level. Questionnaires were given to 9 specialists in agricultural resources. As the results, 'public concerns' was decided as a most important evaluation criterion. The most important technologies are "technology developing for animal feces and urine treatment, and restoration it to farm land" in group I, and "technology developing for agricultural by-products as energy source" in group II.

• 한국콘텐츠학회논문지
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• 제21권10호
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• pp.90-102
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• 2021

기술력평가는 기술사업화 주체가 기술을 사용하여 수익을 창출할 수 있는 능력을 평가하기 위한 것으로, 국내 기술평가 전문기관들이 각자 독자적인 평가체계를 구축하고 수행해오고 있다. 특히 최근 개발된 해양수산 분야의 기술력평가모형은 타 산업 대비 열악한 기술개발 환경을 반영하지 못함으로써, 투자적정으로 여겨지는 T4 등급을 통과하지 못하고 있다. 이는 타 산업에서 활용되는 공통적인 평가지표와 평가척도, T1~T10 등급별 구간 점수체계를 유사 또는 동일하게 사용하면서 발생되는 문제점으로 인식된다. 따라서 본 연구를 통해 9개 해양수산 특수 산업분류 체계에 맞는 기술력평가모형 및 지표 개발을 통해, 종합등급 산출결과의 적정성 및 신뢰성을 확보하고자 하며, 동 모형 및 평가지표가 영세한 해양수산 기업 및 업종의 특수성을 반영할 수 있도록 기업데이터(KED) 및 기술력평가 사례 데이터를 기반으로 하고, AHP기반 지표 가중치, 몬테카를로 시뮬레이션 기반의 등급구간 체계를 도출하고 시범사례 적용 결과를 분석하였다. 본 제안 모형을 통해 향후 기술력평가 건에 대해 적용하여 손쉽고 객관적인 평가결과를 기반으로 R&D 및 사업화 지원 프로그램의 효과성 및 활용성을 제고하고자 한다.

• 한국소음진동공학회논문집
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• 제24권4호
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• pp.339-347
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• 2014

Floor impact sound in high-rise apartment building became one of social problems. A lot of civil complaints on floor impact sound occur continuously and the number of disputes between neighbors in small and aged apartment buildings is increasing. Interests on heavy-weight impact sound pressure level measurement and evaluation method is increased. Previous study reported that heavy-weight impact sound level was changed by the sound field condition of receiving reverberation chamber. In this study, heavy-weight impact sound pressure level change by the receiving sound field condition was measured in standard test facility and mock-up test room. These two experimental conditions were designed to simulate averaged living room of common apartment units. By the change of sound absorption power in receiving room, heavy-weight impact sound pressure level in most of frequency bands were changed in standard test facility and mock-up room. Normalized maximum sound pressure level regulated in ISO 16032 showed wider range of heavy/soft impact sound pressure level. Heavy/soft impact sound pressure level change was became smaller by the application of standardized maximum sound pressure level and ISO/CD 10140-3 Amd 2 method. In the case of standardized maximum sound pressure level, absolute sound pressure level changed. From these results, receiving sound field correction method regulated in ISO/CD 10140-3 Amd 2 is needed for the precision measurement and evaluation of heavy-weight impact sound.

• 한국전자거래학회지
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• 제12권2호
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• pp.155-194
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• 2007

본 연구의 목적은 최근 급속히 확산되고 있는 유비쿼터스 컴퓨팅 관련 기술 개발의 기준이 되고 있는 UCT(Ubiquitous Computing Technology)기반 서비스 시나리오의 실질적인 구현 가능성을 종합적으로 평가하는 다면평가방법론을 제안하는 것이다. 다면평가는 제안된 UCT기반 서비스 시나리오에 대하여 기술성, 사업성, 수용성의 3차원으로 평가하여 개별 시나리오의 구현 가능성 및 타당성에 대한 종합적인 평가를 가능하게 해주는 평가방법론이다. 이것은 기존 UCT기반 서비스 시나리오 관련 평가방법론의 부재를 극복하기 위해 제안되었다. 또한 기존에 제안된 기술가치 평가, 재무적 평가(ROI, ROA 등) 등 현재 구현되지 않는 UCT기반 서비스 시나리오의 특성상 도출 불가능 하거나 그 의미를 부여하기 어려운 파라미터를 이용하는 평가 방법의 한계를 극복하기 위해 제안되었다. 따라서 이는 다양한 분야에서 제안되는 UCT기반 서비스 관련 시나리오에 대한 실현 가능성을 포괄적으로 평가하여 해당 시나리오에 기반한 기술 개발에 대한 타당성과 개발 우선순위를 결정하는 평가 도구로 활용 가능할 것이다.