• The KIPS Transactions:PartA
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• v.11A no.5
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• pp.313-318
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• 2004

In this paper, we suggest a checkpoint and recovery facility for the fault-tolerable process which is expected to be executed for a long time. The basic concept of the suggested facility is to allow the process to be executed continuously, when the process was stopped due to a System fault, by storing the execution status of the process periodically and recovering the execution status prior to the fault was occurred. In the suggested facility, it does not need to modify the source code for the fault-tolerable process. It was designed for the user to specify directly the file name and the checkpoint frequency, and two system calls(save, recover) were added. finally, it was implemented on the Linux environment(kernel 2.4.18) for checking the feasibility.

• The Korean Society of Law and Medicine
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• v.17 no.2
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• pp.85-124
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• 2016

The Human gene testing act (GenDG) in Germany starts from the characteristic features of gene testing, i.e. dualisting structure consisted of anlaysis on the one side and the interpretation on the other side. The linguistic distincion of 'testing', 'anlaysis' and 'judgment' in the act is a fine example. Another important basis of the regulation is the ideological purpose of the law, that is information autonomy. The normative texts as such and the founding principle are the basis of the classification of testing types. Especially in the case of gene testing for medical purpose is classified into testing for diagnostic purpose and predictive purpose. However, those two types are not always clearly differentiated because the predictive value of testing is common in both types. In the legal regulation of gene testing it is therefore important to manage the uncertainty and subjectivity which are inherent in the gene-analysis and the judgment. In GenDG the system ensuring the quality of analysis is set up and GEKO(Commity for gene tisting) based on the section 23 of GenDG concretes the criterium of validity through guidelines. It is also very important in the case of gene testing for medical purpose to set up the system for ensurement of procedural rationality of the interpretation. The interpretation of the results of analysis has a wide spectrum because of the consistent development of technology on the one side and different understandings of different subjects who performs gene testings. Therefore the process should include the communication process for patients in oder that he or she could understand the meaning of gene testing and make plans of life. In GenDG the process of genetic counselling and GEKO concretes the regulation very precisely. The regulation as such in GenDG seems to be very suggestive to Korean legal polic concerning the gene testing.

• Clinical and Experimental Pediatrics
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• v.48 no.7
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• pp.696-700
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• 2005

Propose : Body composition by bioelectrical impedance analysis(BIA) is a very useful method of analysing body composition. BIA is non-invasive, inexpensive, nonhazaedous and reproducible technique. The aim of this study was to determine the level of agreement between body composition measurement by BIA and dual-energy X-ray absorptiometry(DEXA). Methods : Data was examined in 100 children(male 58; female 42), who visited Pusan National Hospital. Weight(kg) and height(cm) were measured, and body compositions were analyzed with fat mass, lean body mass, body fat percent by BIA and DEXA methods. Results : Comparison of the DEXA and BIA methods showed highly statistically significant correlations in measurement of human body composition(fat mass, lean body mass, body fat percent). Conclusion : BIA should be considered as the method of choice in measurement of human body composition, since it's non-invasive, reliable, rapid, nonhazaedous and inexpensive, using portable equipment.

• Journal of Science Education
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• v.39 no.3
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• pp.434-445
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• 2015

In this study, science recommended books for elementary school students were analyzed. For the study, the screening tool with a number of criteria was produced. In order to develope a screening tool, we examined several previous studies and references. After that, through discussion and exchange of opinions, the preliminary screening tool was made. In order to ensure the reliability and validity, the pilot test was conducted. Then, detailing questions and modifications have been made by exchange of ideas. And nine science recommended books were analyzed. The results are as follows. First, as a result of examining recommended books, exploration and the nature of science were received a low rating. Second, description of the scientific knowledge was not sufficient. This discussion can be obtained through the following. First, when selecting recommended books, care should be taken in exploration and the nature of science. Second, a wide range of science trade books needs to study more.

• Science of Emotion and Sensibility
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• v.21 no.2
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• pp.113-124
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• 2018

The logical assumption of the comparison question test (CQT) is that the guilty person pays more attention to the relevant questions than to the comparison questions, and that the innocent person pays more attention to the comparison questions than to the relevant questions. The purpose of this study was to verify the logic of the comparison question test using functional magnetic resonance imaging (fMRI). The participants were tested for brain responses during a mock crime and performed the CQT under guilty and innocent conditions. After brain imaging, we evaluated the psychological burden of responding to the relevant questions and comparison questions. In the guilty conditions, the degree of burden was higher for the relevant questions than the comparison questions, and there was no significant difference in the innocent conditions. The fMRI results showed that, in the guilty conditions, greater activation was observed in the right superior temporal gyrus and right inferior frontal gyrus when relevant questions were presented relative to comparison questions. Based on these findings, the logical assumption of the CQT was discussed.

• Journal of the Korea Convergence Society
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• v.11 no.11
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• pp.425-431
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• 2020

The purpose of this study was to examine validity of developed Logo-Autobiography for College students (LAC). The LAC was developed based on Frankl's logotherapy and Logo-Autobiography program for middle-aged women. Eleven college students participated in 6 sessions of LAC after 3 psychiatric nurse practitioners confirmed content validity of the program. Focus group interviews were conducted to identify participation experiences and to examine validity of the program sessions. Qualitative data were analyzed using content analysis method. A total of 9 themes were emerged from the data; 1)Realizing my existence, 2)Discovering my uniqueness of existence, 3)Thinking my future, 4)Experiences of encounter, 5)My uniqueness, 6)Experiences of successful coping, 7)Realizing freedom of attitude choice, 8)Needs of self-transcendence, and 9)Discovering my existence. The emerged 9 themes were all evaluated to be consistent with the objectives and topics of each session. We suggest a randomized experimental study to examine effects of LAC on college students' mental health.

• Journal of the Korean Society for Nondestructive Testing
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• v.36 no.4
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• pp.273-280
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• 2016

The simulation of nondestructive testing has been used in the prediction of the signal characteristics of various defects and in the development of the procedures. CIVA, a simulation tool dedicated to nondestructive testing, has good accuracy and speed, and provides a three-dimensional graphical user interface for improved visualization and familiar data displays consistent with an NDE technique. Even though internal validations have been performed by the CIVA software development specialists, an independent validation study is necessary for the assessment of the accuracy of the software prior to practical use. In this study, time of flight diffraction signals of ultrasonic inspection of a calibration block for reactor vessel head penetrations were simulated using CIVA. The results were compared to the experimentally inspected signals. The accuracy of the simulated signals and the possible range for simulation were verified. It was found that, there is a good agreement between the CIVA simulated and experimental results in the A-scan signal, B-scan image, and measurement of depth.

• The Journal of the Korea Contents Association
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• v.11 no.10
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• pp.342-348
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• 2011

The study aimed to compare the validity between the abdominal ultrasonographic(US) grading system of fatty liver and histologic grading system of fatty liver in living liver donor candidates. As the fatty liver is defined as pathologic total fat >10%, US validity was sensitivity 64.6%, specificity 68%, positive predictive value 76.8%, negative predictive value 54%. As the strict data handling on US grading normal, mild fatty liver are negative, moderate fatty liver is positive, US validity was sensitivity 26.8%, specificity 100%, positive predictive value 100%, negative predictive value 45.5%. ROC curve analysis according to different cut off value of liver-to-kidney brightness ratio was Area under ROC curve=0.859(95% CI=0.795~0.922, state variable= total fat 10%). There were statistically significant difference( p<0.001). Ultrasonography for the fatty diagnosis showed a high validity to predict the result of histology grade of fatty liver.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.4
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• pp.592-598
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• 2017

The purpose of this study is to suggest a new inspection period of ${\triangle}{\triangle}$ guided missiles by analyzing their reliability using field data. The ${\triangle}{\triangle}$ guided missile has an inspection period of five years which was determined using prediction data during its development process. However, from the analysis of its field data, it was shown that the inspection period could be extended to more than 18 years. Based on this result, a policy is proposed to reevaluate the inspection period by means of practical reliability tests.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.1382-1385
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• 2013

본 논문에서는 로봇의 움직임 특성을 추출하여 로봇 시스템의 신뢰성을 평가하는 방법을 제안한다. 원자력 발전소 증기 발생기 전열관의 비파괴 검사에 사용되는 ECT 검사용 Probe 가이드 로봇 (이하 증기발생기 로봇으로 기술)을 대상으로 하였다. 증기발생기 로봇의 동작 상태를 감시하기 위해 관측 카메라가 설치된다. 증기발생기 수실은 로봇 설치 및 해체를 위한 원형의 출입구 (Man Way)를 제외하고는 밀폐된 공간이다. 증기 발생기 전열관의 비파괴 검사 중에는 로봇과 로봇의 동작을 감시하는 관측 카메라만 설치된다. 관측 카메라가 고정되어 있다면, 배경의 변화를 야기하는 외란은 없다고 가정할 수 있다. 시간적으로 이웃하는 2 개의 관측 영상을 미분 (차 영상) 처리하면, 로봇 시스템의 이동 성분만 추출된다. 이러한 이동성분의 크기를 계산하여 로봇의 전체 행정거리 (ECT Probe를 검사위치에 안내하기 위해 로봇 기구부가 움직이는 범위)에 대해 영상 프레임 단위로 전개하면 특정의 고유 궤적이 나타난다. 이러한 고유 궤적과 다른 패턴을 보이는 로봇의 움직임 궤적은 에러로 간주한다. Burn-in 시험 (원자력 발전소 현장에 투입하기 전에 실험실에서 현장 적용의 타당성을 검증하기 위해 수행하는 시험) 중에 있는 증기발생기 로봇에 대해 본 논문에서 제안한 방법으로 신뢰성 평가를 수행하였으며, 그 결과 및 문제점 등에 대해 기술한다.