• 한국해양공학회지
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• 제19권2호
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• pp.47-52
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• 2005

This paper introduces a procedure for free span and fatigue analysis of offshore pipelines per DNV-RP-F105, 2002. The new method includes the axial force and deflection load in pipelines. The screening criteria were established to calculate the allowable span lengths in the new design codes. The screening criteria allows a certain amount of vortex-induced vibration due to wave and current loading. However, the induced pipe stresses are very small and usually below the limit stresess of typical S-N curves. In contrast, the conventional criteria did not allow any vortex-induced vibration in the free span of pipelines. Thus, the screening criteria yields reduced allowable span lengths. A simplified procedure was established to calculate the fatigue damage due to long-term current distribution. The long-term current statistics was assumed with a 3-parameter Weibull distribution. The fatigue damage was estimated for the span lengths obtained from the screening criteria for various conditions. Sample calculations show the effect of axial force for various boundary conditions. Comparisons with conventional criteria are included.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 1999년도 춘계학술발표대회 논문집
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• pp.103-108
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• 1999

A synthesized model of pultrusion process considering thermally induced deformatiion was established. The model was composed of liquid resin flow model thermo-chemical analysis and linear elastic analysis. in order to verify the above-mentioned models several experiments were performed. A laboratory scale pultrusion line was established and glass/polyester composites were fabricated. the experimental results were compared with the calculated ones. The model successfully could estimate degree of cure pulling force and amount of process-induced deformation.

• 한국통신학회논문지
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• 제21권6호
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• pp.1416-1424
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• 1996

The problem of optimaizing multiframe targe detection (MFTD) performance si discussed. The MFTD problem is treated as a multiple hypothesis desision problem, and a ne optimality criterion for the MFTD problem is established. It is of Neyman-Pearson (NP) type which is extended to multiple hypothesis cases. An optimal solution with respect tot eh established criterion is derived, and also proposed is a suboptimal solution which reduces the compelexity accompanying the optimal one. The trade-off between the reduction of complexity and the amount of loss in the detection performance is also studied. The proposed algorithm is applied to an active sonar system and the performance is evaluated via Monte-Carlo simulations.

• International Journal of Advanced Culture Technology
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• 제11권3호
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• pp.338-345
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• 2023

Nowadays, many companies are striving to turn customer value into business value. Customer Relationship Management is a management system that develops effective and efficient marketing strategies by classifying customers in detail based on their information, i.e. databases, and consists of various information technologies. To implement this management system, a customer integration database must be established, and customer characteristics (buying behavior, preferences, etc.) must be analyzed with the databases established and the behavior of each customer must be predicted. This study aims to systematically manage a large amount of customer data generated by companies that apply Customer Relationship Management, in order to develop data design and data governance strategies that should be considered to increase customer value and even company value. We mainly looked at the characteristics of customer relationship management and data governance, and then explored the link between the field of customer relationship management and data governance. In addition, we have developed a data strategy that companies need to perform data governance for customer relationship management.

• Journal of Nutrition and Health
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• 제54권6호
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• pp.584-593
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• 2021

2020 한국인 영양소 섭취기준에서 탄수화물은 만성질환 예방을 위한 섭취기준으로 총 에너지 섭취량에 대한 탄수화물로부터의 에너지 섭취비율인 에너지적정비율을 1세 이후 모든 연령에서 55-65%로설정하였다. 그리고 2020년에 처음으로 탄수화물의 평균필요량과 권장섭취량을 설정하였다. 인체의 탄수화물 필요량은 뇌에서 하루에 소비되는 포도당량과 케톤체 생성이 나타나지 않는 양을 기준으로 1세 이후 모든 연령에서 1일 100 g을 설정하고, 권장섭취량은 15% 변이계수를 사용하여 두 배의 변이계수를 더한 130 g/일로 설정하였다. 탄수화물의 평균필요량은 최소필요량의 개념이지 에너지원으로서 적절한 섭취량에 대한 개념은 아니므로 탄수화물의 영양소섭취상태를 평가할 경우에는 평균필요량이나 권장섭취량에 비교하는 것은 적절하지 않고, 에너지적정비율을 활용하여 탄수화물로부터의 에너지 섭취비율의 적절성을 평가하는 것이 적절하다. 탄수화물은 에너지 적정비율범위에서 섭취할 때 만성질환의 위험을 낮출 수 있으며, 이를 탄수화물의 양뿐만 아니라 급원도 고려하는 식생활에 활용해야 할 것이다.

• 한국식품영양학회지
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• 제32권1호
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• pp.11-26
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• 2019

The objective of this study was to reduce the waste rate of onion peel, which has excellent functionalities, and to promote its industrial utilization. The methodology involved preparing beef jerkies using liquid seasonings with 0% (OPE0), 50% (OPE50) and 100% (OPE100) onion peel extract (OPE) of domestically produced onion, respectively; and assessing their antioxidant activities and quality characteristics. As the amount of added OPE increased, the contents of crude protein and crude ash increased, while those of crude fat decreased. As for color values, increase in the amount of added OPE led to increase in L value and b value, but decrease in a value. The measurement of mechanical texture showed that hardness and cohesiveness decreased as the amount of added OPE increased. TBARS (thiobarbituric acid reactive substance) content decreased as the amount of added OPE increased. And the amount of added OPE increased, all the antioxidant activity of beef jerky increased. Acceptability test showed the highest preference for OPE50 with regard to flavor, taste texture and overall acceptability. Quantitative descriptive analysis (QDA) showed that increase in the amount of added OPE led to increase in meat color, salty taste, sweet taste, meat flavor and chewiness and decrease in off-flavor. According to principal component analysis (PCA), OPE50 and OPE100 had high levels of the sensory attributes that increase preference-such as meat color, salty taste, sweet taste, meat flavor and chewiness. Based on such results, it was established that 50% is the optimal mixing ratio of OPE for preparing a beef jerky of high preference that also has excellent quality characteristics and antioxidant activity.

• 한국연초학회지
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• 제26권1호
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• pp.50-56
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• 2004

The quality of burley leaf tobacco was affected by various toasting conditions. In this study, we determined main factor to influence the quality of burley tobacco on toasting and established proper toasting condition to improve the quality of toasted tobacco. Our results indicated that the main factor to influence the quality of burley tobacco was the amount of treatment and 3rd drying zone temperature. We also found that the proper toasting conditions to improve the quality of toasted tobacco and reduce the smoking irritation were moisture content (34 %), amount of treatment (1,520kg/hr), 1st drying zone temperature (135$^{\circ}C$), 2nd zone drying temperature(145$^{\circ}C$) and 3rd zone drying temperature (147$^{\circ}C$).

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -3
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• pp.1764-1767
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• 2002

Recent explosive increases in information 'volume have led to a rapid development or a change of information technology which stores, searches, and manages a vast amount of information. It is considered that an effective share and utilization of a large amount of digital information produced by work performances is a pivotal element which can make decisive contributions to a great success of business management. This common property of information reflects a changing social paradigm including a change of business processes. This paper is aimed at designing and embodying the construction of knowledge base in an efficient project management system using unsupervised data mining techniques in order to extract information and utilize it as knowledge about standard data (statistical data, template etc.,), size prediction and a danger precaution notice which are needed for a plan and a scheduling of a new project from data coming from already-established projects.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2015년도 춘계 학술논문 발표대회
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• pp.13-14
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• 2015

To minimize construction of nuclear facility, it is required to reduce reinforcing bar amount and solve reinforcing bar concentration and for this, it is necessary to develop appication design technology and modular of high strength reinforcing bar. Hence, KHNP reduces excessive reinforcing bar amount which can cause possibility of poor construction of concrete through design standard development and modular of nuclear facility structure using high strength reinforcing bar to raise economics and has its purpose to maintain high-level safety and durability as they are. After reviewing the rebar drawing of the NPP structures and performing the mock-up test, the rebar modulation method in the various area of the NPP Structure has been established.

• 디지털융복합연구
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• 제2권1호
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• pp.145-160
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• 2004

P Leasing Company was a steady growing company with positive net income in most years since 1985 when it was established. However, it suddenly experienced a minus net income of 6.8 billion won in 1996. The reason of its deficit was known to be the financial distress of its two major leasing contracts. The total amount of two contracts was 58 billion won witch is about 8% of total amount of its leasing contracts. In this paper, we analyse how the disability of lease payments from the two leasing contracts influence P Leasing Company's financial stability, growth opportunity, and profitability. In addition, by performing ROI analyse, we point out the financial reasons of P Leasing Company's deficit in 1996. We hope our case analysis to help students understand the cash flow of leasing companies. The P Leasing Company case also illustrates the fact that bad leasing contracts would seriously affect the profitability of leasing companies as bad loans would seriously do the profitability of commercial banks.