• 한국측량학회지
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• 제40권1호
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• pp.41-49
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• 2022

최근 열화상 카메라의 수요 증가와 함께 열화상 카메라를 활용한 연구 또한 관심이 높아지고 있다. 그 중, 기존의 드론에 열화상 카메라를 부착하여 촬영하는 등의 단순 촬영에서 나아가 열 영상 처리를 통한 디지털 트윈 구축, 영상화된 데이터를 통한 관리 시스템 구축 등 열 영상 처리 후 데이터를 응용한 연구가 증가하고 있다. 본 논문에서는 열화상 카메라를 처리하는 과정에서 생성되는 화소값인 DN값(Digital Number)이 실제 표면 온도로 변환하기 위한 관계식 유도과정에서 방사율이 DN값에 미치는 영향을 알아보기 위한 연구를 진행하였다. DN값은 열 영상의 스펙트럼 밴드 값을 나타내는 숫자로 열 영상 데이터를 구성하는 중요한 요소이다. 하지만 DN값은 실제 표면 온도를 표시하는 온도 값이 아닌 열이 높고 낮음을 밝기로 표시한 밝기 값으로 실제 표면 온도와 비 선형적인 관계이다. 그러므로 열화상 카메라로 획득한 영상 이미지의 DN값을 실제 표면 온도와 관계성을 보일 수 있다면 데이터를 처리하기 수월하며, 더 많은 활용성을 기대할 수 있다. 그러므로 본 연구에서는 우선, 실제 표면 온도와 열 영상의 DN값의 관계를 분석하고, 열화상 카메라와 같은 원리로 작용하는 비접촉 열화상 온도계가 실제 표면 온도에 근접한 참값으로 변환할 수 있도록 방사 조정을 진행하였다. 그 결과 실제 표면 온도 및 DN값의 관계 그래프와 방사 조정된 비접촉 열화상 온도계 및 DN값의 관계 그래프가 유사한 선형관계를 보였으며 방사율을 조정하기 전보다 조정한 후의 비접촉 온도가 실제 표면 온도에 더 근접한 결과를 얻었다.

• Journal of Construction Engineering and Project Management
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• 제2권4호
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• pp.42-45
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• 2012

In construction industry, the term 'procurement' is considered as a project based job where clients and contractors are always keen to observe performance indicators. These indicators represent financial and non-financial efficiency of project activities. Among these, the monitoring of financial indicators such as cost monitoring is an ongoing process and its importance cannot be undermined during the project life cycle. It can be monitored by using traditional approach of direct reporting of actual cost against budget. However, the comparison of budget versus actual spending does not indicate the worth of the work which is completed at any given time. This approach does not represent the true cost performance of the project. Because of these limitations, this paper discusses the applications of Earned Value Analysis (EVA) for cost monitoring of construction projects in Malaysia. Besides traditional approach, EVA is a three-dimensional approach that compares three cost indicators i.e. the budgeted value of work scheduled with the earned value of physical work completed and the actual cost of work completed. Therefore, cost monitoring by EVA is an objective measure of actual work performed. This paper uses a case study, an example application of EVA as a cost monitoring tool. This case study reaffirms the benefits of using EVA for project cash flow analysis and forecasting.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2019년도 춘계 학술논문 발표대회
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• pp.105-106
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• 2019

In this research, considering the practical conditions at field, thermal cracking method was suggested based on the comparative analysis between predicted value and actual value obtained from the actual structure member with optimum mix design. The optimum mix design was deduced from the various mix designs with various proportions of cementitious binder for upper and lower placement lifts of mat-foundation mass concrete. Therefore, it can be stated that applying low heat mix design and different heating technique between upper and lower placement lifts for mass concrete are efficient to control the thermal cracking. As future issues, based on the interpretation result value, we will select the optimal combination that is applied specifically to the actual site, and deeply analyze the correlation between the measured value and the analysis value through the combination and the test of the actual structure.

• 디지털산업정보학회논문지
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• 제6권2호
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• pp.209-224
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• 2010

This study is focus on consumer innovativeness. The purpose of this study is to explore variable that affect users' perceived value of mobile advertising and actual response intension to analyze relationship among variables. We built research new model based on the Technology Acceptance Model(TAM) and the Ducoffe's model(1996). The result of this study can be summarized as below. First, consumer innovativeness had a positive effect on convenience, the entertaining element and informativeness. Second, credibility and convenience had a positive effect on mobile advertising value. Third, Mobile advertising value had a positive effect on actual response intention to mobile advertising. As shown in the result of this study, the relation between perceived value of mobile advertising and actual response intention, depending on innovativeness in accordance with mobile advertising characters elements.

• International Journal of Human Ecology
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• 제8권1호
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• pp.109-116
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• 2007

Leisure time is a critical part of modern life and is increasingly important in modern society. Therefore, analyzing expectations and values of leisure and researching leisure practices are integral in measuring the quality of life. In this respect, differences between values and attitudes leading to the ideal leisure life and the actual leisure life could provoke negative influence on our lives, further, decreasing quality of life. Therefore, classifying leisure lifestyle through analyzing value of lifestyle and the actual state of leisure precisely is very necessary. Leisure lifestyle could be very useful standard satisfying various desires and demands related to leisure. In the research, we surveyed 3,000 people over 10 years of age, one on one interview method, asking value of life behaviors (Individualism vs. Collectivism, Pro-Stability vs. Pro-Change, Statistical way of life vs. Active way of life, Family-centered life vs. Work-centered life) and practices of leisure life (With whom, How frequently, Where, For what) in respect to both value and behaviors. Through this survey, five groups of leisure life type have been identified; "Community-oriented Type", "Cocoon Type", "Family-oriented Type", "Personal-stability Type" and "Multiplicity Type". These leisure lifestyles would provide effectual alternatives for reducing gaps between expectations for ideal leisure life and actual life. Furthermore, this could be used for ground work to develop measurements for satisfying various leisure demands.

• Communications for Statistical Applications and Methods
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• 제5권3호
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• pp.905-926
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• 1998

We propose a modified mid P-value method to reduce the conservativeness for the inference of conditional associations in three-way contingency tables. This improves the ordinary mfd P-value method. For $2{\times} 2${\times} K$ tables, we propose confidence intervals for an assumed common odds ratio based on inverting two separate one-sided tests using the modified mid P-value. Also, an alternative and usually even better ways of constructing intervals, based on Inverting a two-sided test, are presented. The actual probability of coverage of a 100($1-\alpha$)% confidence interval is centered about the nominal level, but the modified mid P-value approach gives actual coverage probability even closer to the nominal level than the ordinary mid P-value approach.

• 대한조선학회논문집
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• 제56권5호
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• pp.427-438
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• 2019

It was important to estimate the full-scale operating performance including actual RPM and engine power of a ship since the operation efficiency during a voyage could be evaluated from the values. In the previous research, an entire voyage was simulated by following recorded speeds obtained from AIS and full-scale measurement data. Although reasonable tendencies were observed in the estimated speed, actual RPM, and engine power, it was impossible for them to be completely corresponded with the measured values due to the difference between actual operation and mathematical model. In this paper, alternative approaches to cope with the speed, actual RPM, and engine power were suggested by following the given speed, RPM, and power respectively. After entire voyages were simulated according to a given value, the effects of the value on the estimated performance were investigated. And, it was confirmed that the appropriate approach could be differently chosen according to the aim of the simulation or given value.

• 생명과학회지
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• 제18권6호
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• pp.865-870
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• 2008

운동과 식이요법을 병행한 체중감량 프로그램에 참여한 여성 비만인의 체지방량, 안정시대사량, 그리고 갑상선 호르몬 차이를 비교할 목적으로 실험한 결과, 체지방량, 체지방율, 체표면적이 유의하게 감소되었고, 안정시대사량 예측치와 실측치 모두 유의하게 감소되었지만, 갑상선 호르몬의 변화는 나타나지 않았다. 안정시대사량과 신체요인들과의 상관분석 결과, 제지방 체충이 가장 밀접한 관계를 보였으며, 안정시대사량과 갑상선 호르몬들과의 관계에서는 TSH와 가장 밀접한 관계를 나타내었다. 결론적으로 8주간 체중감량 프로그램 참여로 체지방은 효과적으로 감소되었으나, 갑상선 호르몬 차이는 없었고 체중감소에 비해 제지방이 유지됨으로써 안정시대사량의 감소는 최소화되어, 에너지 대사작용에 긍정적인 영향을 준 것으로 사료된다.

• 한국생산제조학회지
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• 제8권3호
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• pp.92-99
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• 1999

The inspection unit which is developed and used in this study, is processed the shape data from the CCD camera to seek welding bite section shape, and then calculated as a real dimension from measuring the value of each inspection item. The reason of measuring with the real in this study is came out from the image method which used for a long time, which is extricated the characteristic as the dimension of pixel by recognize pixel. The measurement method of the section shape is that we decide the thresholding value after we drew the histogram to binarizate the object. After that, we make flat the object to get rid of the noise and measure the shape of welded part through the boundarization of the object. The shape measurement is that measure the value of the welding part to adapt the actual operation program from using the ratio between the actual dimension of the standard specimen and the dimension of image, to measure the ratio between the actual product and the camera image. The inspection algorithm which estimates the quality of welded product is developed and also, the software GUI(Graphic User Interface) which processes the automatic test function of the inspection system is developed. We make the foundation of the inspection automatic system and we will help to apply other welding machine.

• 가정과삶의질연구
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• 제26권1호
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• pp.85-93
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• 2008

The purpose of this study is to investigate the Korean's value of children and perception of parenting difficulty through the agreement to the three kinds of Korean proverbs: difficulty of parenting, preference of son and value of daughter. Also, this study attempted to identify whether the value of children and the perceived difficulty of parenting measured by the agreement of the proverb is related to the number of children they thought as ideal before marriage and the number of children they actually have. Total 385 married men and women who have a job participated in the survey. Main result is as follows. 1) In most cases, the ideal number of children was at least equal or more than the actual number of children. 2) The subjects showed higher degree of agreement to the proverbs regarding the difficulty of parenting than the preference of son or the value of daughter. 3) The degree of agreement to each kind of proverbs were different in terms of some demographic variables such as age and sex. 4) When the age effect controlled, the ideal number of son had correlation with the agreement to the son-preference proverbs while the ideal number of daughter or total children had no correlation with agreement to any kinds of proverb. The actual number of son was positively correlated with agreement to the son-preference proverbs while actual number of daughter was negatively correlated with it. In conclusion, this study suggests the Korean's value of children has been rapidly changing and it has, in part, an effect on the number of children they want to have or they actually have.