• 국제초고층학회논문집
• /
• 제2권1호
• /
• pp.23-30
• /
• 2013

This paper explains the Japanese present situations relevant to the fire resistance performance. Performance-based fire provisions was introduced in 1998 for the first time when the Building Standard Law was amended. However, performance-based fire resistance design had been used since long before the official introduction of performance-based provisions. A Comprehensive Technology Development Project of Ministry of Construction from 1982 to 1986 established a technical basis for performance-based fire safety engineering in Japan. A system of calculation methods for fire resistance verification was prescribed in the Ministry Notification in 2000 utilizing the results of this project as a background. This method, referred to as the Fire Resistance Verification Method (FRVM), is the standard method to verify the fire resistance performance of principal building parts such as columns, beams, and walls of steel, concrete, or wood structured buildings. For tall buildings, however, more advanced method for performance verification is often necessary because new building materials or structural systems are often used for these buildings. An example project of tall building owned by a major newspaper company is presented in this paper. Advanced thermal deformation analysis is executed to secure the fire resistance of the building.

• 한국항공운항학회지
• /
• 제18권3호
• /
• pp.84-91
• /
• 2010

New aircraft category such as Light Sport Aircraft is introduced to prevent Ultralight Vehicle accidents and to promote aviation sports. Therefore, a new rule for airworthiness standard, certification, operation and maintenance of light sport aircraft is being created. The present study deals with LSA concept, development trend of LSA, airworthiness standards and certification policy. In particular, an aircraft type analysis of FAA certified LSA is conducted to establish performance requirements of Light Sport Aircraft designs.

• 한국간호교육학회지
• /
• 제23권3호
• /
• pp.252-267
• /
• 2017

Purpose: This study aimed to investigate clinical nurses' perception on nursing managerial competencies. Methods: This was a descriptive study. The data were collected from 198 nurse managers who had worked in six general hospitals using a self-reporting questionnaire. Data were analyzed by descriptive statistics, t-test, ANOVA, and Importance-Performance Analysis. Results: Only 32% of the participants had experienced nursing managerial competency training. The mean score for perceived performance of nursing managerial competency was lower than that for perceived importance. There were significant differences in perceived importance, performance, and importance-performance gaps among head, charge, and staff nurses. Importance-performance analysis showed that three of the 30 nursing managerial competencies require further development: staffing, human resources development and education, and nursing standard development competency. There were significant differences in importance-performance gaps according to age, career years in current hospital, work shift, position, nursing delivery system, and nursing managerial competency-education experience. Conclusion: A training program for developing and improving nursing managerial competencies which is focused on the gaps in importance and performance level is needed for clinical nurses. In addition, it should be considered to improve nursing work conditions such as nursing delivery system and formal appointment in order to increase the performance of nursing managerial competencies.

• 공학교육연구
• /
• 제26권6호
• /
• pp.40-50
• /
• 2023

This study is to examine the validity of assessing basic-level proficiency in physics among incoming engineering freshmen through item analysis and standard setting. For empirical analysis, we examined the physics subject taken by the freshman class of 2021 at K University, considering its significance for engineering students. In this study, we initially performed item analysis utilizing both classical test theory and item response theory. Subsequently, leveraging the item and test information, we employed a modified Angoff method and the Bookmark method for standard setting. Consequently, the difficulty level initially set during item development was found to be higher than the actual performance level exhibited by the students. This study highlights a discernible disparity between the expected university standard and the real proficiency level of incoming freshmen in terms of basic academic ability in physics. Based on these research findings, a comprehensive discussion on the fundamental academic competence of engineering students was conducted, underscoring the necessity for formulating a tailored learning approach leveraging the outcomes from the basic ability test.

• 한국인터넷방송통신학회논문지
• /
• 제12권2호
• /
• pp.233-241
• /
• 2012

프로젝트 관리의 목표는 프로젝트를 성공하기 위함이다. 그러나 프로젝트 수행 결과가 성공이라고 명확히 판단할 수 있는가? 또한 판단 결과에 고객과 개발자 모두 동의하는가? 성공과 실패에 대한 정의와 판단 척도들에 대해 다양하게 제시되고 있으나 명확한 분류 기준이 없다. 본 논문은 개발 성공을 결정하기 위한 판단척도들을 살펴보고, 프로젝트의 성공과 실패에 대해 재정의한다. 이러한 정의에 의해 프로젝트 수행 결과를 판단하는 척도와 기준을 제시한다. 제시된 판단 척도와 기준을 적용할 경우, 성공과 실패를 분류하는데 고객과 개발자간의 불협화음을 줄일 수 있을 것이다.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2017년도 춘계 학술논문 발표대회
• /
• pp.189-190
• /
• 2017

The development and utilization performance of the construction new technology was introduced in 2014 according to the detailed evaluation criteria of the construction project of Ministry of Land, Infrastructure and Transport. In the case of the construction new technology, the current standard is give 3 points in the "technology development and investment performance" evaluation item. However, construction engineering companies is difficult for to invest the capital required for new technology development. Therefore, in this study, we try to extract the difficult factor that occur in the process of construction new technology development in terms of construction engineering companies. The research results are expected to provide with the support policy guideline for new technology development costs to policy makers.

• 한국항공우주학회지
• /
• 제50권4호
• /
• pp.233-240
• /
• 2022

스마트무장은 종말 유도조종을 통해 정밀타격 임무를 수행하는 초소형 유도무기로 미래 전장환경의 신무기체계이다. 하지만 크기로 인한 구조적 제한으로 인해 압전구동 방식의 조종날개를 이용해 제어를 수행하기 때문에 기동력이 작아 유도범위가 제한적이다. 본 논문에서는 스마트무장의 효과도를 높이기 위한 비 표준조건 사격제원 산출 알고리즘을 제안한다. 제안된 알고리즘은 획득한 전장환경 정보를 이용해 표준조건에서의 사격제원을 보정해 비 표준조건의 사격제원을 산출한다. 다양한 조건에서의 수치 시뮬레이션을 통해 제안된 알고리즘의 성능을 검증하였다.

• Animal Bioscience
• /
• 제35권4호
• /
• pp.587-595
• /
• 2022

Objective: The present study was conducted to evaluate the effects of dietary supplementation with Bifidobacterium animalis, Agave fructans, and symbiotic of both encapsulated on growth performance, feed efficiency, blood parameters, and immune status in broiler chickens, and to compare these with diets including antibiotic growth promoters and without additives. Methods: A comparative experimental study was carried out with 135 male Ross 308 broiler chickens. Each trial was divided into 5 equal groups. Control group (CON) received a standard diet without growth promoter; GPA, a standard diet with colistin sulfate and zinc bacitracin (0.25 g/kg of feed); PRE, a standard diet with 1% Agave fructans; PRO, a standard diet with Bifidobacterium animalis (11.14±0.70 log CFU/g); SYM, a standard diet with B. animalis and Agave fructans. Results: A significant decrease in food consumption was found for the GPA, PRE, and SYM, compared to the CON group. The results show a better feed conversion index in PRE and GPA with respect to the CON group with the highest conversion index. Interestingly, the weight of the gastrointestinal tract shows a statistically significant difference between GPA and PRE groups. Moreover, the length of the gastrointestinal tract of the GPA group was less than the PRE group. In the total leukocyte count, there was a statistically significant increase in the GPA group compared to the CON, PRE, and PRO groups, and the heterophiles-lymphocytes index was lower in PRO. Regarding the cytokines, interleukin 10 (IL-10) decreased in PRO compared to CON and PRE, while IL-1β increased in the SYM group. Conclusion: Alternative treatments were shown to achieve similar productive results as growth-promoting antibiotics and showed improvement over diet without additives; however, they have immunomodulatory properties and improved the development of the gastrointestinal tract compared to the treatment of growth-promoting antibiotics.

• 한국건설순환자원학회논문집
• /
• 제8권1호
• /
• pp.41-48
• /
• 2013

화강석의 채취 또는 가공 과정에서 발생되는 폐석재 및 폐석분의 경우는 일부 순환골재로만 재활용되고 있고, 이를 제외한 나머지는 대부분 불법 매립되거나, 무단방치 되어 사회적으로 물의를 빚고 있다. 이와 같이 방치되고 있는 폐석재 및 폐석분을 활용해 시멘트계 인조대리석 내 외장패널을 개발하는 연구가 진행되고 있지만, 이를 검증할 수 있는 품질 기준(표준)이 부재하여 성능검증 및 품질확보에 대한 문제점이 남아있는 실정이다. 따라서 본 논문에서는 폐석재, 폐석분(순환자원)을 활용한 인조 대리석 패널의 개발에 따른 품질(성능)을 객관적으로 평가할 수 있는 성능검증 기준(표준)안 마련을 위하여 우리나라의 폐석재 및 폐석분의 배출 현황 자료 조사를 통하여 기초 통계 자료를 마련하고, 국내외 관련 규격 조사를 통하여 폐석재 및 폐석분을 활용한 인조대리석이 갖추어야 할 기본 성능 검증 항목을 도출하고자 한다. 또한, 이를 토대로 폐석재 및 폐석분을 활용한 내 외장용 시멘트계 인조대리석 품질검증 표준안을 개발하고자 한다.

• International Journal of Railway
• /
• 제2권4호
• /
• pp.180-186
• /
• 2009

High speed railway challenge the design, construction and maintaining of traditional railway, many traditional design concepts have been changed. Transition of railway and bridge has two main problems. one is that different lines have different ability of resisting distortion in area of trial load, which was known that problem of smooth transition of stiffness, the other is that differential settlement between artificial structure and earth structure cause bending of railway. The two problems have effect on train moving. The principle of processing transition of railway and bridge is same in world, but it is difficult to find relationship between design standard of transition, vehicle performance, line standard, design speed and so on form documentation and data reports. Based on mechanics, the paper analyzed dynamic performance of transition of high speed railway, studied various rough elements which is effective to train moving, built mathematical model of interaction of train and transition of high speed railway and developed numerical simulation software. In various different work conditions, we did great quantity of numerical simulation, comprehensive analysis and performance analysis.