• Title/Summary/Keyword: Prescriptive method

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Trends of Nursing Science Inquiry in Doctoral Dissertations (박사학위논문에 나타난 간호학 탐구경향)

  • 김의숙;김광숙;김대란;김은정;성경미;신현숙;신혜경;이영자;정석희
    • Journal of Korean Academy of Nursing
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    • v.34 no.2
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    • pp.315-323
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    • 2004
  • Purpose: The purpose of this study was to identify the theoretical characteristics and direction of inquiry in the discipline of nursing by analyzing doctoral dissertations. Method: The materials used in this study were 277 doctoral dissertations from five universities in Korea. The framework for the study was derived from Kim's(l993) alternative linkage among philosophy, theory, and method in nursing science. Result: Of the 277 dissertations it was found that there were 13 types of linkages out of a possible 54 types. Most of the dissertations (128 of 277) were done within the linkage of realism/etic/quantitative/explanatory knowledge type. Of the 218 dissertations within scientific realism, 42 were within relativism, and 17 within practicism. There were 134 dissertations of the explanatory knowledge type, 112 descriptive ones, and 31 prescriptive ones. Studies done within the etic quantitative methodology included 209 dissertations and within the emic perspective, 43 with qualitative methodology, and 7 with quantitative. Conclusion: The results show that it is necessary to develop more alternative linkages for nursing practice and this will lead to expanding nursing knowledge.

Evaluation of Limiting Temperatures of Rectangular Hollow Sections (각형 강관기둥부재의 한계온도 평가 연구)

  • Kwon, In-Kyu
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2012.05a
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    • pp.331-332
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    • 2012
  • Structural steel has been used as a primary materials to columns and beams since 1960's in Korea with an advantages of excellent of load-bearing capacity and design flexibility, and faster construction. However, if the steel columns made of structural steel exposed to fire the load-bearing capacity is going down steadily and finally reach to collapse. Therefore, building regulation requires fire resistance according to building occupation, scales. The fire resistance can be evaluated two categories. One is prescriptive method that is based on building regulation, specification and so on and the other is performance-based fire engineering method. The latter can be designed based on scientific and engineering consequences. The easiest evaluation way using the fire engineering design is comparing to the limiting temperature and maximum temperature calculated based on heat transfer theory. If the limiting temperature of a column exceeds the maximum temperature of it, the column can carry the load during the fire. Therefore, the database of limiting temperature is very essential for evaluation of column. In this paper, to build the database of column made of rectangular hollow sections 8 fire tests with loading were conducted and the relation between the limiting temperature and the applied loads showed in reverse proportion.

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Experimental Study on Limiting Temperatures of Structural Beams made with Structural Steel According to Load Ratios (하중비에 따른 강재 보의 한계온도에 관한 실험적 연구)

  • Kwon, In-Kyu
    • Journal of Korean Society of Steel Construction
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    • v.22 no.6
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    • pp.581-588
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    • 2010
  • Recently the requirements of the buildings built with structural steel were increased in terms of structural stabilities and fire resistance at severe fire conditions. To meet the building regulations of fire resistance, a fire design is needed. This is of a prescriptive method and a performance engineering based method. Recently a simple calculation method as one of performance based engineering method is very popular because of its ease for an application in building built with structural steel. But, in Korea the performance based engineering method is not allowed yet. Thus it is needed to make a guideline for the performance based engineering method. The purpose of this study is to establish the limit temperature derived from structural beams made with both a H-section and a H-section filled with concrete at the web and derived the limit temperatures from beams made with H-sections and found out that the limit temperatures from two kinds of specimens depended on the applied loads and the specimens filled with the concrete represented 3 hour fire resistance in the range of 80%, 60%, and 50% of the maximum load.

A Study on the Fire Resistance Design of Buildings Considering the Fire Load Energy Density (화재하중밀도를 고려한 건축물의 내화설계법에 관한 연구)

  • 이평강;이용재;최인창;김회서
    • Fire Science and Engineering
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    • v.17 no.2
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    • pp.10-16
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    • 2003
  • The main purpose of this study is to raise the point at issue and to propose reform direction about the current performance criteria of fire resistance through the examination of the fire resistance required for each use of compartment by using performance-based fire safety design method. To examine the performance criteria of fire resistance, this study compared the equivalent time of fire exposure which was calculated by using time-equivalent formulae with the required fire resistance time determined by existing prescriptive code, and surveyed factors such as the fire load energy density, ventilation factor, fire compartment materials and fire compartment geometry in order to calculate the equivalent time of fire exposure.

Study on collision processing among objects by 3D information of real objects extracted from a stereo type method in AR (가상현실에서 스테레오 타입 방식으로 추출한 실물 객체 3D 정보를 이용한 객체간 충돌처리 연구)

  • Jo, In-Kyeong;Park, Hwa-Jin
    • Journal of Digital Contents Society
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    • v.11 no.2
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    • pp.243-251
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    • 2010
  • In this paper, 2 devices through the input image are projected onto the output video device to extract 3D information of real objects and they are located in virtual space. All 3D objects for each inter-object interaction information and location information makes the validation process by recognizing conflict. The proposed extract 3D information of real objects and collision handling inter-object interaction in the most basic issues in augmented reality, because more than anything is a matter to be prescriptive. Therefore, the proposed system to solve this problem exists in virtual space, all objects of the user by validating the conflict between realism and immersion to show that aims to increase.

Calculation of Limit Temperature on H-Beam Flexural Member Through the Thermal Stress Analysis under the Lateral Load (재하된 H형강 휨재의 열응력해석을 이용한 한계온도 산정)

  • Yoon, Sung Kee;Lee, Chy Hyoung;Koo, Bon Hoon
    • Journal of Korean Society of Steel Construction
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    • v.27 no.4
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    • pp.387-397
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    • 2015
  • The domestic fire resistance performance test is conducted as a prescriptive design method such as quality test. In quality test there are 2 methods, unloaded fire resistance test and fire resistance test under load. In realistic, these tests, however, have problems with expense, time and diversity of structure. This study reviewed fire resistance performance of H-beam flexural member by thermal stress analysis using finite element ABAQUS program. This research is for the performance-based design reviewing applicability of domestic standard. As a result of this study, limit temperatures per each load ratio provied for proper performance of fire resistancy.

An Analytical Methodology for Evaluating Radiological Protection Alternatives Using Analytical Hierarchy Process (계층화 의사결정법을 이용한 방사선방호선택 대안결정에 관한 해석적 방법론)

  • Sa, Sang-Duk;Narita, Masakuni
    • Journal of Radiation Protection and Research
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    • v.19 no.2
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    • pp.99-107
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    • 1994
  • This study aims to introduce a prescriptive methodology to comprehensively support the analysis of decision process by the use of Saaty's Analytical Hierarchy Process for the optimization of radiation protection. The analytical Hierarchy Process for the optimization of radiation protection. The analytical process for the problem of selecting options among given protection alternatives is illustrated with the data of the uranium mine example in ICRP Publ. 55. This technique, unlike other conventional selection method, is considered to provide a useful tool for the protection manager with respect to its ease of use and simplification in the choice of optimal alternative associated with radiological protection.

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Nurses' Perception on Hospice Law in Hospice Institutions (호스피스기관 간호사의 호스피스 법제화에 대한 인식)

  • Kim, Ki-Kyong;Lee, Chung-Yul;Kim, Gwang-Suk;Cho, Yoon-Hee;Komatsu, Hiroko;Zhang, Weihua;Chao, Yann-Fen
    • Journal of Korean Academy of Nursing Administration
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    • v.14 no.3
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    • pp.332-343
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    • 2008
  • Purpose: The purpose of this study was to investigate the nurses' perception on hospice law in hospice institutions using questionnaire and to recommend bill of hospice law. Method: The data were collected from 95 nurses who have experienced in hospice care using a self-completion questionnaire. To analyze prescriptive data, content analysis was done using an analysis scheme developed by the investigators. Results: The separate hospice law suggested was types and purpose of law, certification of patient, living will and right to attorney, staff, institutions, service, and payment. The analysis scheme consisted of 6 categories and 17 subcategories. 83 significant statements were analyzed and categorized. Hospice nurses indicated that their operation, financing, manpower, institution, patient right, drug management is needed to enact for bill. Conclusions: The results of this study on hospice law contents will contribute to build the national hospice system in Korea.

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Review on the New Fire Protection Standard for Nuclear Power Plants and Investigation for the Applicability of the Performance-Based Fire Modeling

  • Jee, Moon-Hak;Hong, Sung-Yull;Sung, Chang-Kyung;Kim, In-Hwang
    • Nuclear Engineering and Technology
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    • v.34 no.3
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    • pp.259-267
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    • 2002
  • NFPA-803 has been referred as the Fire Protection Standard at the Nuclear Power Plants of Pressurized Water Reactor. This Standard has been used as the fire protection regulation, containing prescriptive requirements with deterministic methodology. Recently, with cumulative efforts by the U.S. Nuclear Regulatory Commission and Utilities in America to establish a new Standard, including a quantitative evaluation methodology, NFPA-805, the Performance-Based Standard for FIRE Protection for Light Water Reactor Electric Generating Plants was issued and approved by the American National Standards Institute as an American National Standard with an effective date of February 9, 2001. This paper presents an analysis result from the computer modeling for the fire simulation In addition, it proposes the idea that this kind of analytic method can be available for the facilities design of fire prevention and protection fields, as well as an evaluation for the fire suppression system with a quantitative analysis for the thermal phenomena in fire compartments in Nuclear Power Plants.

Building a Business Knowledge Base by a Supervised Learning and Rule-Based Method

  • Shin, Sungho;Jung, Hanmin;Yi, Mun Yong
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.9 no.1
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    • pp.407-420
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    • 2015
  • Natural Language Question Answering (NLQA) and Prescriptive Analytics (PA) have been identified as innovative, emerging technologies in 2015 by the Gartner group. These technologies require knowledge bases that consist of data that has been extracted from unstructured texts. Every business requires a knowledge base for business analytics as it can enhance companies' competitiveness in their industry. Most intelligent or analytic services depend a lot upon on knowledge bases. However, building a qualified knowledge base is very time consuming and requires a considerable amount of effort, especially if it is to be manually created. Another problem that occurs when creating a knowledge base is that it will be outdated by the time it is completed and will require constant updating even when it is ready in use. For these reason, it is more advisable to create a computerized knowledge base. This research focuses on building a computerized knowledge base for business using a supervised learning and rule-based method. The method proposed in this paper is based on information extraction, but it has been specialized and modified to extract information related only to a business. The business knowledge base created by our system can also be used for advanced functions such as presenting the hierarchy of technologies and products, and the relations between technologies and products. Using our method, these relations can be expanded and customized according to business requirements.