• 한국측량학회지
• /
• 제5권2호
• /
• pp.56-64
• /
• 1987

측점으로 이루어진 측량망내에 변위점이 포함되어 있을 경우 변위점검출을 위해 오차타원 및 신뢰타원 개념이 효과적으로 이용되고 있다. 본 연구에서는 측량망내에서 고정점의 선택과 기하학적 조건의 변화가 미지점 좌표의 정확도에 미치는 영향을 분석하고 각 측점들의 변위를 조사하기 위해 고정망 조정방법과 자유망조정 방법을 각각 비교 분석하였다. 본 연구를 통해 자유망조정에 의한 방법이 수평위치 결정의 정확도 향상과 변위점 검출에 있어 더 신뢰성 있는 결과를 나타낸다는 것을 알 수 있다.

• 한국측량학회:학술대회논문집
• /
• 한국측량학회 2007년도 춘계학술발표회 논문집
• /
• pp.7-10
• /
• 2007

The 1st order vertical network of Korea was adjusted in 1987 at first time. This is the second adjustment of the 1st order vertical network of Korea by National Geographic Information Institute. All the levelling data were acquired by digital level with invar staff. The number of 1st order level lines are 36, and 34 level lines comprise 11 circles of level network. Backward and forward error of a few level lines are larger than the regulations of NGII, Korea. Also, 3 circles of vertical network has circuit closure error that is exceed the regulation. As the result of 1st order vertical network adjustment, the reference standard error of the vertical network was $1.8mm/{\surd}km$.

• 한국측량학회지
• /
• 제3권2호
• /
• pp.48-62
• /
• 1985

본 논문은 g-inverse를 이용한 자유망 조정으로서, 미지 Parameter를 이용한 해법에 있어서는 모든점의 좌표가 동일경중률에 의한 Parameter로 처리되기 때문에 정규방정식의 행열이 특이행열이 된다. 이 논문은 망조정에 있어서의 특이행열과 삼변측양에 있어서 기존방법의 정확도 분석 및 삼변자유망조정의 문제를 검토하였다. 본 삼변자유망 조정의 경우에 있어서는 조정좌표의 최소제곱근 오차가 심다변망에서 35.6%, 사변망에서 50.5%로 정확도가 향상되었고, 오차구원의 요소에 있어서도 최소제곱근오차가 유심다변망에서 a=24.5%, b=5.0%, 사변망에서는 a=42.6%, b＝49.2％로 감소하였다. 따라서 자유망조정 방법의 적용은 기준점의 수평위치결정에 있어서 상대오차의 개선을 위하여 필요한 것으로 사료된다.

• 한국측량학회:학술대회논문집
• /
• 한국측량학회 2007년도 춘계학술발표회 논문집
• /
• pp.43-46
• /
• 2007

This paper focuses on examining and evaluating recent results of the national wide horizontal network adjustment which has carried out with respect to the Korean Geodetic Datum 2002 (KGD2002). To do this, 137 geodetic control points were observed by modem GPS technology. After processing all the observations, their outcomes are compared with ones provided by the national wide network adjustment. Results of GPS network show that RMSE is ${\pm}2.7cm\;and\;{\pm}6.5cm$ in horizontal and vertical component, respectively. On the other hand, ones from comparison with EDM network indicate that RMSE is ${\pm}3.0cm$ in horizontal component.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1995년도 Proceedings of the Korea Automation Control Conference, 10th (KACC); Seoul, Korea; 23-25 Oct. 1995
• /
• pp.83-86
• /
• 1995

This paper proposes an auto-tuning method of feedforward signal in boiler control of thermal power plants by using the neural network. The neural network produces an optimal feedforward signal by tuning the weights of the network. The weights are adapted effectively by using the teaching signal of PI control output. The proposed method was evaluated based on a detailed simulator which expressed non-linear characteristics of the 600 MW actual thermal power plant at load chaning operations, showed effectiveness in the learning of the weights of the neural network, and gave an accurate control performance in the temperature control of the system. Through the evaluation, the proposed method was proved to be effectively applicable to the actual thermal plants as the automatic adjustment tool.

• 한국측량학회지
• /
• 제38권5호
• /
• pp.415-423
• /
• 2020

GNSS (Global Navigation Satellite System) is mostly used for high-precise surveys due to its accuracy and efficiency. But this technique does not always fulfill the demanding accuracy in harsh operational environments such as urban canyon and forest. One of the remedies for overcoming this barrier is to compose a heterogeneous surveying network by adopting terrestrial measurements (i.e., distances and angles). Hence, this study dealt with the adjustment of heterogeneous surveying networks consisted of GNSS baseline vectors, distances, horizontal and vertical angles with a view to enhancing their accuracy and so as to derive an appropriate scheme of the measurement combination. Reviewing some technical issues of the network adjustments, the simulation, and experimental studies have been carried out, showing that the inclusion of the terrestrial measurements in the GNSS standalone overall increased the accuracy of the adjusted coordinates. Especially, if the distances, the horizontal angles, or both of them were simultaneously adjusted with GNSS baselines, the accuracy of the GNSS horizontal component was improved. Comparing the inclusion of the horizontal angles with those of the distances, the former has been more influential on accuracy than the latter even though the same number of measurements were employed in the network. On the other hand, results of the GNSS network adjustment together with the vertical angles demonstrated the enhancement of the vertical accuracy. As conclusion, this paper proposes a simultaneous adjustment of GNSS baselines and the terrestrial measurements for an effective scheme that overcomes the limitation of GNSS control surveys.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
• /
• pp.310-313
• /
• 1996

In this paper, a neural control algorithm is proposed on the automation of adjustment process. The adjustment processes in camcoder production line are modelled, and the processes are adjusted automatically by means of off-line supervisory trained multi-layer neural network. We have made many experiments on the several adjustment processes by using the control algorithm. There are many unexpected troubles to achieve the desirable adjust time in the practical application. To overcome those, some auxiliary algorithms are demanded. As a result, our proposed algorithm has some advantages - simple architecture, easy extraction of the training data without expertises, adaptability to the varying systems, and wide application for the other resemble processes.

• 대한간호학회지
• /
• 제30권3호
• /
• pp.694-708
• /
• 2000

The main purpose of this study was to identify the relationship of self efficacy and social support to the psychosocial adjustment in people with epilepsy. Data were collected from October 1 to October 15, 1999 from 101 people with epilepsy who were being treated regularly at one of the university hospitals located in Seoul. The research instruments were a questionnaire to gather demographic and disease-specific data, the Epilepsy Psycho- Social Effects Scale developed by Chaplin et al(1990), the Epilepsy Self Efficacy Scale developed by DiIorio et al(1992a) and translated by Park(1999), the Norbeck Social Support Questionnaire developed by Norbeck et al(1981) and translated by Oh(1985). Data were analyzed using the SPSS program. The results are as follow : 1. Of the 14 psychosocial adjustment areas, 75 of 101 subjects experienced problems in ten or more areas and 28 in all 14 areas. The severity of the psychosocial adjustment problem was moderate or more in six areas. 2. The score for self efficacy was an average of 1103.86 out of a possible 1800, for social support 117.57 for total functional out of a possible 720, and 48.21 for total network out of a possible 264. There were an average of five people on the network. The main network people were parents, brothers and sisters, spouse, friends. 3. Of the 14 psychosocial adjustment areas, six areas correlated with self efficacy and 'problems with taking medication' area had a negative correlation with social support. In conclusion, people with epilepsy have various problems in psychosocial adjustment. Nursing interventions using self efficacy should be developed to improve psychosocial adjustment in people with epilepsy. Also, instruments and interventions for regimen-specific supports which are suitable for epilepsy should be developed.

• 한국측량학회지
• /
• 제5권1호
• /
• pp.66-72
• /
• 1987

삼변삼각강이 동일한 형상을 갖는 삼변강이나 삼각강보다 더 우수함은 잘 알려진 사실이다. 그러나 일반적으로는 이질측지망의 조정에서 잔차와 기준분징값이 더 크게 나타나므로 이를 설명하기가 쉽지 않다. 이 논문에서는 이질강의 동시조정과 그 정밀도 및 신뢰도에 대해 논의되어 있다. 실측성과를 적용한 결과 이질측지강의 해석에는 신뢰도의 개념과 규준이 정밀도보다 타당함을 보여주고 있다.

• Architectural research
• /
• 제11권2호
• /
• pp.43-49
• /
• 2009

Since the late 1980s, the schedule technique applied to the construction industry around the world has rapidly changed from the traditional ADM (Arrow Diagramming Method) to the PDM (Precedence Diagramming Method) technique. The main reason for this change is to overcome the limits and inconveniences of the traditional ADM technique. The time-cost trade-off is one of the core scheduling techniques to establish the best optimized combination plan in terms of a relationship between the cost and schedule. However, most of the schedule-related textbooks and research papers have discussed and proposed applications of a time-cost trade-off technique based only on the Finish to Start relationship. Therefore, there are almost no consideration and discussion of problems or restrictions that emerge when the time-cost trade-off technique is applied to the PDM network that has overlapping relationships. This paper proposes the lead-time adjustment method as a methodology for overcoming some restrictions that are encountered when the time-cost trade-off technique is applied to the overlapping relationships of the PDM network.