• 한국화재소방학회논문지
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• 제17권2호
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• pp.10-16
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• 2003

본 연구의 목적은 성능위주의 화재안전설계법에 따른 구획실 용도별 요구내화시간산정을 실시함으로써 현행 내화성능기준의 문제점도출 및 개선방향을 제시하는 것이다. 내화성능기준에 대한 검토를 위해 본 연구에서는 현재 국내의 시방규정에 의해 결정된 요구내화시간과 등가시간공식에 의해 산정된 화재노출상응시간과 비교하였고, 화재노출상응시간을 산정하기 위해 화재하중밀도, 환기계수, 구조재료의 열적특성 그리고 구획실 형상치수 등을 조사하였다.

• 한국문헌정보학회지
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• 제44권4호
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• pp.95-114
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• 2010

Multimedia searching is an important activity on the Web, especially among the younger generation. The purpose of this study aims to examine college students’ multimedia information needs and searching on the Internet. While there is a clear pattern among students with respect to their multimedia uses, searching sources, relevance criteria and searching barriers, some differences exist especially according to searching of different multimedia types such as image, audio and video. For multimedia uses, information/data-focused uses are frequently found in image and video, while the use of audio is mainly for object-focused searches. As multimedia searching sources, audio and video files present a similar pattern of being high in media specific searching sources and low in generic search engines. Browsing through related blogs and homepages is an important part of searching for media files accounting for approximately 20% of total search for each media. The relevance criteria used by study participants when search for image files was primarily concerned with topicality while the contextual and media quality in the audio and video types are also considered important. Searching barriers for audio and video files are categorized into three broad aspects, including access and search quality, preview limitations and collection limitations, while obstacles for image files searching include access difficulties and low qualities of various collection.

• Journal of Welding and Joining
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• 제19권1호
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• pp.40-48
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• 2001

An ultrasonic test method, as a nondestructive test is applied to ensure the clad interface quality assessment. According to the reference codes and standards, not only korea Industrial Standard(KS) but also American Society for Testing and Materials (ASTM) Standard, ultrasonic examination procedures use the pulse-echo, A-scan, back reflection signal drop method and/or side drilled reference hole used to establish the acceptance criteria of clad material test. But the variety of bonding materials and sizes makes it difficult to produce the reference blocks, or thus the criteria. In order to overcome these practical difficulties, new ultrasonic testing criterion is suggested. In this new method, the theoretical interface reflection signal amplitude level is calculated and suggested as an acceptance criteria with the back reflection signal set to 100% FSH(Full Screen Height) which is based on acoustic impedance mismatch at the clad interface for the explosive clad ultrasonic inspection. Applicability of suggested criterion, for the explosive clad Fe-Naval Brass with different bonding quality is confirmed to the pre-existed KS and ASTM specifications and verified by using SEM (Seanning Electron Microscope) micrograph. The results obtained by the suggested method is more conservative than the results according to the KS B 0234 and ASTM A 578 specifications The suggested method could be applicable to any other combination of explosive clad ultrasonic inspection.

• The Journal of Asian Finance, Economics and Business
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• 제7권11호
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• pp.843-851
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• 2020

This study focuses on identifying and prioritizing the broader performance measures for the service supply chains by taking the case of Majan Electricity Company, Sohar, in the Sultanate of Oman. For an examination of the uniformity of ultimate objectives and the priorities therein, two strata of respondents with a total of fourteen respondents were approached for their valuable insights. Suitable structured instruments were personally administered to elicit the insightful and worthy responses. The two multi-criteria decision-making techniques, namely, the Fuzzy Analytical Hierarchy Process and the Best-Worst Method were used to reach a meaningful prioritization of the identified and refined broader performance measurement dimensions. The results show that there exists a minor gap between the two respondents' groups in terms of their prioritizations. The major finding points to the difference in terms of the topmost priorities as revealed by the two set of respondents. For one group of respondents, the customer satisfaction matters the most, whereas for the other group, it is the overall profitability that matters the most. This gap against the utopian state assists in concluding that there is a requirement to reorient the employees so as to have a shared and common understanding of the organizational priorities.

• Journal of Mechanical Science and Technology
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• 제20권8호
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• pp.1101-1117
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• 2006

In the present article, recent progress of spray-wall interaction research has been reviewed. Studies on the spray-wall interaction phenomena can be categorized mainly into three groups: experiments on single drop impact and spray (multiple-drop) impingement, and development of comprehensive models. The criteria of wall-impingement regimes (i.e., stick, rebound, spread, splash, boiling induced breakup, breakup, and rebound with breakup) and the post-impingement characteristics (mostly for splash and rebound) are the main subjects of the single-drop impingement studies. Experimental studies on spray-wall impingement phenomena cover examination of the outline shape and internal structure of a spray after the wall impact. Various prediction models for the spray-wall impingement phenomena have been developed based on the experiments on the single drop impact and the spray impingement. In the present article, details on the wall-impingement criteria and post-impingement characteristics of single drops, external and internal structures of the spray after the wall impact, and their prediction models are reviewed.

• Clinical and Experimental Pediatrics
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• 제58권10호
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• pp.369-373
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• 2015

Purpose: In 2004, the American Heart Association (AHA) had published an algorithm for the diagnosis of incomplete Kawasaki disease (KD). The aim of the present study was to investigate characteristics of supplemental laboratory criteria in this algorithm. Methods: We retrospectively examined the medical records of 355 patients with KD who were treated with intravenous immunoglobulin (IVIG) during the acute phase of the disease. Laboratory data were obtained before the initial IVIG administration and up to 10 days after fever onset. In 106 patients, laboratory testing was performed more than twice. Results: The AHA supplemental laboratory criteria were fulfilled in 90 patients (25.4%), and the frequency of laboratory examination (odds ratio [OR], 1.981; 95% confidence interval [CI], 1.391-2.821; P<0.001) was a significant predictor of it. The fulfillment of AHA supplemental laboratory criteria was significantly associated with refractoriness to the initial IVIG administration (OR, 2.388; 95% CI, 1.182-4.826; P=0.013) and dilatation of coronary arteries (OR, 2.776; 95% CI, 1.519-5.074; P=0.001). Conclusion: Repeated laboratory testing increased the rate of fulfillment of the AHA supplemental laboratory criteria in children with KD.

• Journal of Trauma and Injury
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• 제22권2호
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• pp.154-160
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• 2009

Purpose: This study aimed to determine new criteria for detecting independent factors with high sensitivity in cases of cervical spine injury. We compared the sensitivity, the specificity, and the false negative predictive value (NPV) of plain radiographs with those of computed tomography for cervical spine injury in patients with minor head injury. Methods: We retrospectively reviewed the cases of 357 patients who underwent both cervical plain radiographs and computer tomography from January 2006, to September 2008. Patients were divided into two groups: the cervical spine injury group and the no cervical spine injury group. New criteria were organized based on variables that had significant differences in the logistic regression test. Results: Among the 357 patients, 78 patients had cervical spine injuries. The average age was $43.9{\pm}15.2$ yrs old, and the male-to-female ratio was 1.90. The most common mechanism of injury was motor vehicle accidents. There was a significant difference in loss of consciousness, Glasgow Coma Scale (GCS)=14, neurologic deficit, posterior neck tenderness, and abnormality of the cervical plain radiographs between the two groups on the logistic regression test. New criteria included the above five variables. If a patient has at least variable, the area under the ROC curve of the new criteria was 0.850, and the sensitivity and the false NPV were 87.2% and 5.2%, respectively. Conclusion: New criteria included loss of consciousness, GCS=14, neurologic deficit, posterior neck tenderness, and abnormality of the cervical plain radiographs. If the patient had at least 1 variable, he or she could have a of cervical spine injury with a sensitivity of 87.2% and a false NPV of 5.2%.

• 한국치위생학회지
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• 제8권4호
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• pp.193-204
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• 2008

Purpose : The purpose of this study was to make a comparative analysis of the curriculum segment of the dental hygiene education accrediting criteria, one of the six segments of the criteria, and the curriculums of 26 colleges in a bid to provide information on the modification or improvement of the curriculums. Method : The curriculums of 18 three-year-course colleges and eight four-year-course universities were selected, and the courses offered by 10 colleges or more were categorized into three different fields to tabulate the courses: primary education, prevention / education, and clinical dental hygiene. After the courses were analyzed, some of them that were possible to integrate in view of dental hygienist duties were presented in this study as inclusive courses. Results : There was connection among the degree courses of the three-year-course curriculums in the field of primary education. The curriculums failed to keep up with the worldwide globalization trend. 90 credits or more were allocated to major subjects, which satisfied one of the mandatory requirements of the accrediting criteria, and two colleges provided theoretical and practical courses in the ratio of 50:50. A wide variety of personality-education and teaching-profession courses were offered according to each college's circumstances. None of the colleges was equipped with an inclusive curriculum, and there was a tendency for the three-year-course colleges to offer segmented subjects in accordance with the national examination. The courses in the field of prevention and education that are bound up with the job performance of dental hygienists should be integrated into dental hygiene and practice, and the courses in the clinical dental hygiene field should be incorporated into an inclusive course of 치과임상학. The integration of the courses will make it possible to ensure the successful articulation of the different school systems and to stay abreast with the globalization trend. Even just inclusive courses should give more weight to practice than theory to bolster the job performance of dental hygienists, and an inclusive curriculum should be prepared for students to receive activity-centered hands-on education in different semesters.

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2017년도 추계학술논문요약집
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• pp.91-92
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• 2017

In this study, assembling procedure of TRU fuel assembly was reviewed and divided into rod bundle assembling, mating preassemblies and welding, and inspection and non-destructive examination. Based on this assumption, the design criteria of a remote assembler for TRU fuel assembly of PGSFR is defined and predictable technical issues are proposed.

• Parasites, Hosts and Diseases
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• 제33권2호
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• pp.117-124
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• 1995

간흡충증의 진단에 흔히 쓰이는 초음파검사의 민감도와 특이도를 알아보기 위하여 1994년 3월부터 11월까지 유행지역인 형산강 유역 포항 통합시 근로자 609명을 대상으로 피내반응검사. 대변검사. 초음파검사 및 설문조사를 시행하였다. 초음파검사에서 진단적인 소견으로 간내 담관의 확장만을 인정할 경우의 민감도는 21%이었고, 담관주위 에코가 있는 경우까지 포함하면 민감도는 52%이었다. 피내반응검사의 민감도는 62%이었다. 피내반응검사 양성이면서 초음파 소견이 하나라도 있는 경우를 진단기준으로 삼으면 민감도는 46%이었다 본 조사에서는 간흡충 혹은 간흡충의 집합체에 의해 생성되는 것으로 알려진 초음파검사상 방추상이고 약하게 반향을 보이는 담관이나 담낭내의 비음영의 초점이 뚜렷하게 보이는 환자는 없었다. 초음파검사의 특이도는 간내 담관의 확장만을 진단적 소견으로 인정할 경우 95%. 담관주의 에코까지 진단적 소견에 포함하면 83%이었다. 피내반응검사의 특이도는 52%이었다. 피내반응검사 양성이면서 초음파 소견이 하나 라도 있는 경우를 진단기준으로 삼으면 특이도는 90%이었다.