• 한국건설관리학회논문집
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• 제15권4호
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• pp.58-67
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• 2014

건설교통분야의 국가R&D사업 투자비중은 지속적으로 증가 추세이고, R&D 규모측면에서도 100억원 이상의 중대형 규모의 연구개발사업들이 많이 나타나고 있다. 그러나 국내에서는 지속적인 연구개발투자에도 불구하고 개발된 기술의 사업화가 추진되지 않는 기술 휴면화 현상이 대두되고 있고, 기술개발에 한정되어 있는 R&D사업 범위 확대를 통해 R&D성과를 사업화와 연계시킬 수 있는 방안 마련이 필요하다. 따라서 본 연구는 수익접근법을 이용한 기술가치 평가를 현재 진행 중인 연구사업에 대하여 기술가치 평가를 수행하여, 특허기술의 가치를 금액으로 산정하여 기술실시계약시 합리적이고 객관적인 기술거래 기준가격과 사업화 전략 등을 제시하였다. 해당 기술수명 기간 동안 창출 가능한 잉여현금흐름(FCF) 합계액(사업가치)은 할인율 16.34%를 반영하여 현재가치로 환산할 경우 512백만 원이 산출되었고, 해당 사업가치에 산업기술 요소법을 통해 구해진 기술기여도 44.39%를 적용한 결과 기술가치는 227백만 원으로 도출되었다. 이렇게 도출 기술가치 평가를 기반으로 기술의 사업화 및 상용화 전략수립이 필요하고, 이에 대한 사업화 요건과 마케팅 전략 등의 연구가 추후 추진될 필요가 있다.

• Asian Journal of Innovation and Policy
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• 제3권2호
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• pp.245-261
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• 2014

Knowledge, technology and information have special characteristics different from the ones of normal consumer products and services. Especially the value of such information varies according to external elements such as the provided environment, their method of utilization, and the level and purpose, etc. of the user. In this study, the indicators of information customer value are developed and measured to enhance customer-based values with efforts for making new customers and maintaining existing customers. The result is as follows: 14 customer value indicators were developed. Among the indicators, value gained versus effort, reduced time for research idea investigation and savings in time searching for equipment, and tools and materials got the highest score, which means that time-saving effects were the most important. The field study of this paper was conducted from information users in the field of national R&D, and thus future studies could be conducted in various industries in many countries to attain generalized results.

• 충청수학회지
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• 제27권1호
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• pp.9-16
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• 2014

Let $\mathbb{A}=\mathbb{F}_q[T]$ be a polynomial ring over $\mathbb{F}_q$. In this paper we determine an asymptotic mean value of quadratic Dirich-let L-functions L(s, ${\chi}_{{\gamma}D}$) at the central point s=$\frac{1}{2}$, where D runs over all monic square-free polynomials of even degree in $\mathbb{A}$ and ${\gamma}$ is a generator of $\mathbb{F}_q^*$.

• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2000년도 추계 학술대회(The 2000 Autumn Conference of korea Technology Inovation Society)(한국기술혁신학회)
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• pp.259-277
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• 2000

In this paper, we suggest theoretical grounds on the problem of R&D portfolio with different option premiums utilizing the Real Options Model, which has received intensified attention as the method of assessment of R&D project with high risk. Even though there have been many studies focused on the evaluation of option value of single project from technology valuation's perspective. there are few study on the portfolio of multiple technology investment by option value using. This paper bears practical importance by showing simple examples with the option value of investment alternatives and the valuation of related risk, the construction of optimum portfolio in technology investment alternatives.

• 한국식품저장유통학회지
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• 제10권1호
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• pp.47-53
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• 2003

후지 사과의 품질분포 조사를 위하여 재배면적 기준으로 5지역(청송, 예천, 봉화, 상주, 예산)을 선정하여 이 지역으로 부터 생산된 후지 사과를 3년간 수집하여 외적, 내적 품질인자를 분석하였다. 후지 사과의 적색도 평균치는 88.94%이었고 년도별로는 3차년도가 93.88%로 가장 높은 값을 보였다. 세로 크기는 평균 76.76mm 이고 가로 크기는 평균 87.17mm 이었으며 중량은 평균 276.749 이었다. 사과의 외관상 손상정도는 각각 평균 1.27점과 1.21점으로 물리적 손상이 병충해에 의한 손상보다 다소 많았다. 사과 품질에 있어서 가장 중요한 당도는 3년 평균치가 14.81$^{\circ}$Brix 이었고 편차는1.78$^{\circ}$Brix 이었다. 경도는 3년 평균값이 0.80kgf 이었고 pH는 3.98이었으며, 산도는 0.32%로 년도별로 차이가 크지 않았다 산지별로는 지역A의 적색도가 91.10%로 가장 높았고 지역D는 86.15%로 가장 낮았다. 크기는 종의 경우 지역B가 77.43mm로 가장 크고 지역A가 76.35mm로 가장 작았으며 횡의 크기는 지역C가 88.12mm로 가장 크고 지역D가 86.40mm로 가장 작았다. 중량은 지역B가 280.49g으로 최고치를, 지역D는 273.89g로 최저치를 보였다. 물리적 흠과 병충해에 의한 홈 또한 산지별로 차이는 있었으나 그 차이는 매우 작았다. 당도는 지역I가 15.32$^{\circ}$Brix로 가장 높았고 지역B가 14.58$^{\circ}$Brix로 가장 낮았다. 경도는 지역D와 E가 0.83kgf로 가장 단단한 것으로 나타났으며 지역C는 0.76kgf로 비교적 경도가 낮는 것으로 나타났다. pH는 지역A와 D가 4.01로 가장 높고 지역C가 3.88로 가장 낮았으며, 산도는 지역 A, C, E가 모두 0.33%로 가장 높았고 지역D가 0.31%로 가장 낮았으나 지역 간의 차이가 매우 작은 것으로 나타났다.

• 한국식품위생안전성학회지
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• 제38권5호
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• pp.356-360
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• 2023

본 연구에서는 강한 내열성을 가지는 비병원성 Bacillus atrophaeus, Bacillus subtilis, Geobacillus stearothermophilus 포자의 열 저항성을 분석하여 레토르트 식품 제조 시 직접적인 멸균 여부 판정에 사용 가능성을 평가하고자 하였다. B. subtilis 포자의 D₁₂₁-value는 2.9±0.1분이었으며, Zvalue는 43.0±1.4℃로 나타났다. G. stearothermophilus 포자의 D₁₂₁-value는 4.3±0.1분이었으며, Z-value는 25.0±1.6℃로 나타났다. B. atrophaeus 포자의 D₁₂₁-value는 3.7±0.1분이었으며, Z-value는 35.8±1.4℃로 나타났다. B. subtilis, G stearothermophilus와 B. atrophaeus 포자의 D₁₂₁-value는 모두 레토르트 식품 멸균 확인에 사용되는 C. botulinum 포자의 D₁₂₁-value 보다 높은 값을 나타내었다. 이러한 결과를 종합하여 볼 때 레토르트 식품 멸균 시 병원성 포자형성균인 C. botulinum 대신 B. subtilis, G. stearothermophilus, B. atrophaeus 포자를 사용할 수 있을 것으로 판단된다. 또한 기존 세균발육 실험에 소요되는 13일보다 단시간인 2-3일에 멸균 여부를 확인할 수 있을 것으로 판단된다.

• The Journal of Advanced Prosthodontics
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• 제10권3호
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• pp.245-251
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• 2018

PURPOSE. To evaluate the accuracy of a model made using the computer-aided design/computer-aided manufacture (CAD/CAM) milling method and 3D printing method and to confirm its applicability as a work model for dental prosthesis production. MATERIALS AND METHODS. First, a natural tooth model (ANA-4, Frasaco, Germany) was scanned using an oral scanner. The obtained scan data were then used as a CAD reference model (CRM), to produce a total of 10 models each, either using the milling method or the 3D printing method. The 20 models were then scanned using a desktop scanner and the CAD test model was formed. The accuracy of the two groups was compared using dedicated software to calculate the root mean square (RMS) value after superimposing CRM and CAD test model (CTM). RESULTS. The RMS value ($152{\pm}52{\mu}m$) of the model manufactured by the milling method was significantly higher than the RMS value ($52{\pm}9{\mu}m$) of the model produced by the 3D printing method. CONCLUSION. The accuracy of the 3D printing method is superior to that of the milling method, but at present, both methods are limited in their application as a work model for prosthesis manufacture.

• 한국축산시설환경학회지
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• 제8권3호
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• pp.165-170
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• 2002

This study was carried out to measure the 3D-distance of a cow model teat for an application possibility on Robotic Milking System(RMS). A teat recognition algorithm was made to find 3D-distance of the model by using Gonzalrez's theory. Some of the results are as follows. 1 . In the distance measurement experiment on the test board, as the measured length, and the length between the center of image surface and the measured image point became longer, their error values increased. 2. The model teat was installed and measured the error value at the random position. The error value of X and Y coordinates was less than 5㎜, and that of Z coordinates was less than 20㎜. The error value increased as the distance of camera's increased. 3. The equation for distance information acquirement was satisfied with obtaining accurate distance that was necessary for a milking robot to trace teats, A teat recognition algorithm was recognized well four model cow teats. It's processing time was about 1 second. It appeared that a teat recognition algorithm could be used to determine the 3D-distance of the cow teat to develop a RMS.

• 한국의류학회지
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• 제32권1호
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• pp.24-34
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• 2008

Three dimensional body scan technology is being targeted for utilization in the apparel industry. The purpose of this study was to test reliability of the body scan data targeting from 20 to 24 year old men by comparing 3DM, 3D body-scanning semi-auto measurement extraction method, Scanworx, 3D body-scanning auto measurement extraction method, and traditional anthropometric method. We found significant differences in 9 out of 25 items in upper body measurements using 3DM and 16 out of 25 items using Scanworx. In the range of difference value of scan measures, it showed 1 item in the absolute value of more than 40mm between two measuring methods, 3 items in 20 up to 40mm, and less than 20mm in other items. Overall, in height items, the numerical value of traditional measure was higher and in girth, width, depth items, 3D scan measure was higher. We found out that reliability of 3D measurements taken from whole body scans was different according to scanners, scanning softwares, programs, and subjects.

• Geomechanics and Engineering
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• 제34권1호
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• pp.29-41
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• 2023

The 3D geospatial modeling of geotechnical information can aid in understanding the geotechnical characteristic values of the continuous subsurface at construction sites. In this study, a geostatistical optimization model for the three-dimensional (3D) mapping of subsurface stratification and the SPT-N value based on a trial-and-error rule was developed and applied to a dam emergency spillway site in South Korea. Geospatial database development for a geotechnical investigation, reconstitution of the target grid volume, and detection of outliers in the borehole dataset were implemented prior to the 3D modeling. For the site-specific subsurface stratification of the engineering geo-layer, we developed an integration method for the borehole and geophysical survey datasets based on the geostatistical optimization procedure of ordinary kriging and sequential Gaussian simulation (SGS) by comparing their cross-validation-based prediction residuals. We also developed an optimization technique based on SGS for estimating the 3D geometry of the SPT-N value. This method involves quantitatively testing the reliability of SGS and selecting the realizations with a high estimation accuracy. Boring tests were performed for validation, and the proposed method yielded more accurate prediction results and reproduced the spatial distribution of geotechnical information more effectively than the conventional geostatistical approach.