• Journal of Korean Society of Steel Construction
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• v.29 no.2
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• pp.135-145
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• 2017

This study is a secondary study that is a cyclic seismic test of High depth hybrid composite beam and column connection after the primary bending strength test of a high depth Hybrid composite beam. Total of 3 seismic test specimens were prepared to cyclic test. The bracket and beam web spliced by high strength bolt and the bracket and beam upper flange was spliced by welding. Test results showed that the seismic strength was higher than the plastic moment($M_p$) in the positive negative moment section, the requirement of composite intermediate moment frame wes satisfied. Therefore, the requirement of intermediate moment frame can be secured by applying the details of connection of this study results.

• The Journal of Korean Institute for Practical Engineering Education
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• v.4 no.2
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• pp.116-121
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• 2012

One of the most important object in youth employment academy is to resolve the job mismatch of youth unemployment through industry oriented human resource development for which company oriented capacity building program for graduate-to-be and graduate is supported. The major characteristic of this program is to compose a network of operation organization, involved company, involved university and trainee, among those the role of operation organization is most important. The operation organization in youth employment academy is supposed to be evaluated by the last employment rate after 6 months to the day following the programs of the year completion. So performance indicator for the operation organization is needed in selecting the operation organization of the next year youth employment academy, which means a kind of mid-term evaluation. In this research, the concept of development of performance indicator for the operation organization in youth employment academy is introduced and major performance indicator are suggested.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.41 no.4
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• pp.331-340
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• 2021

The blast damage behavior of reinforced concrete (RC) structures exposed to unexpected extreme loading was investigated. To enhance the accuracy of numerical simulation for blast loading on RC structures with seven blast points, the calculation of blast loads using the Euler-flux-corrected-transport method, the proposed Euler-Lagrange coupling method for fluid-structure interaction, and the concrete dynamic damage constitutive model including the strain rate-dependent strength and failure models was implemented in the ANSYS-AUTODYN solver. In the analysis results, in the case of 20 kg TNT, only the slab member at three blast points showed moderate and light damage. In the case of 100 kg TNT, the slab and girder members at three blast points showed moderate damage, while the slab member at two blast points showed severe damage.

• Journal of Practical Engineering Education
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• v.10 no.2
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• pp.131-137
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• 2018

In this study, the results of the IPP system were examined and the direction of development was suggested from the viewpoint of students participating in long-term field practice. The participating students recognized that the IPP system was helpful in enhancing their major competence, non-major competence, and job competitiveness. On the other hand, satisfaction with practicing companies and operating universities remains at a normal level for three years, and the intention to recommend IPP system to junior colleagues and colleagues has been consistently high for three years. The more consistent the desired job and the IPP participation job, the greater the positive perception of the IPP effect and the greater the recommendation intention of IPP system.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.9 no.5
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• pp.259-271
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• 2019

The purpose of this study is to examine the potential of flip learning in Korea and to explore the possibilities of university English education. To this end, participants are sought for classes wherein general English class is taught and the researcher is in charge of teaching. 25 students of media-English class is chosen for the study. Instruments for the study include class evaluation and feedbacks, mid-term and final exams, group performative evaluation, on-line class views and participations. The findings of the study are: As students progress in flipped learning classes, their exam results significantly improved, and their performative evaluation results also improved significant across different groups. The effects are more eminent among higher levels of students, but students with mid and low level of English still improved significantly once they engage themselves in preview activity on a regular basis and self-directedly.

• Journal of Digital Convergence
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• v.17 no.10
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• pp.497-507
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• 2019

The purpose of this study was to examine the effects of music intervention programs for children with ADHD in Korea through systematic review and meta-analysis. For this, nine researches of 1,856 articles published from 2000 to 2019 were reviewed which are experimental studies with the control groups in accordance with selection criteria. As the result of systematic review on four criteria, two or more in each of musical activities, intervention goals, and evaluation tools were employed in most of the nine studies, and there were frequently found studies on sociality and attentiveness. As the result of meta-analysis, there were shown that the overall effect scored medium effect size, and attention deficit and sociality marked low, while problem behavior did medium effect size. It is meaningful that this study showed the importance of using standardized evaluation tools in music intervention for children with ADHD, and it could be used as basic data to develop music intervention programs for them,

• Journal of the Society of Cosmetic Scientists of Korea
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• v.26 no.1
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• pp.125-138
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• 2000

화장품의 개발에서 기계적인 측정결과 뿐만 아니라 소비자가 실제 사용할 때 느껴지는 감성적인 요인의 중요성이 높이 인식되어감에 따라, 관능적인 특성평가의 필요성이 대두되고 있다. 그런 관점에서 트원케익에 대한 사용성 테스트의 한 방법으로 기호형 관능평가를 시도하였고, 본 실험에서는 동일한 소비자(28 명)가 9개의 트윈케익을 일정한 시간에 비슷한 화장 조건하에서 사용하여 비교 평가하도록 하여, 평가의 재현성과 신뢰성을 꾀하였다. 평가는 트윈케익의 세부 관능적 특성에 대한 강도 조사와 선호도 조사 및 전체적인 만족도에 대한 것이었다. 수집된 테이터를 주성분분석에 의해 데이터를 분석하였고, 그 결과 크게 커버력 요인과 입자감 요인이라는 2 가지 요인으로 트원케익의 특성을 평가할 수 있음을 알았다. 일반적인 트윈케익의 분류 방법인 촉촉함과 매트함의 경우, 매트함에 있어서는 트원케익의 공통적 속성으로 제품간 차이를 느끼지 못하였고, 촉촉함에 있어서는 트원케익제품간 차이를 약간 느끼는 것으로 나타났다. 또한 트윈케익의 관능적 특성별 강도와 선호도의 상관관계를 분석하였고, 그 결과에 따른 트윈케익의 (+)매력품질과 (-)매력품질을 분석하였는데, 선호도가 높은 제품이 되려면 여러 가지 (+)매력품질을 고루 갖추고,(-)매력품질을 적게 가져야 할 것으로 사료된다. 본 실험의 평가자들이 대부분 25∼30 세인 점을 감안하면 이 연령 대에서 선호도가 높은 트윈케익 제품의 특성은 커버력이 있으면서 고운 입자감을 느낄 수 있으며, 너무 촉촉하지도 매트하지도 않은 중간 상태와 자연스러운 화장상태를 유지하는 것으로 나타났다.

• Journal of the Earthquake Engineering Society of Korea
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• v.6 no.6
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• pp.33-39
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• 2002

Response Modification Factor(R-factor) approach is currently implemented to reflect inelastic ductile behavior of the structures and to reduce elastic spectral demands from earthquakes to the design level. However R factors were set empirically and simply based on the professional committee consensus on observed performance of building structures during past earthquakes. Consequently some major shortcomings linked to the current R factor approach have been pointed out. Using reinforced concrete intermediate moment-resisting frames(RC IMRFs), an analytical procedure is presented in this paper to establish R factor rationally. To this end, analytical R values were evaluated based on N2 Method and compared with the values recommended by IBC 2000. Overall, the analytical results correlated well with the code values. However the results also revealed that R factor might strongly depend on the system fundamental period. As evidenced by the interstory drift index(IDI) analysis results of this study, current R-factor based(or, Life Safety based) design tends to fail in fulfilling other implicit and hopeful performance objectives such as immediate Occupancy and Collapse Prevention. Performance based design(PBD) appears to be a promising approach to meet the multi level seismic performance objectives assigned to the building structures of nowadays.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 1994.04a
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• pp.122-131
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• 1994

본 연구에서는 배낭 어깨끈의 압박에 의한 통증과 신경 및 혈관압박을 감소시키기 위해 배낭 어깨끈의 압박부위 개선방안을 제안하고 이 배낭이 두가지 국부적 discomfort를 감소시키는 효과를 실험을 통해 평가하였다. 어깨끈 변형을 통해 등세모근 윗쪽부위 및 대흉근 바깥쪽부위의 압박을 대흉근 안쪽부위, 등세모근 중간부위 및 견갑골부위로 이동시키고 어깨끈과 등세모근 윗쪽부위는 접촉하지 않도록 하는 방안이 제안되었다. 실험결과 압박에 의한 통증과 신경 및 혈관압박의 정도가 어깨끈의 압박부위가 개선된 배낭에서 기존배낭보다 상대적으로 적은 것으로 평가되었으며 총체적인 선호도도 어깨끈의 압박부위가 개선된 배낭이 더 높았다. 보조적으로 배낭 착용시의 생리학적 부하정도를 측정한 결과, 개선된 배낭이 생리학적 부하를 효과적으로 감소시키지는 못하는 것으로 나타났으나 주관적 안락도 평가에서는 오히려 우수하였다. 이상이 결과는 본 연구에서 제안한 압박부위 개선배낭이 배낭 착용시의 안락도 결정에 있어 상대적으로 중요도가 높은 국부적 discomfort측면에서 기존배낭보다 우수하여, 생리학적 부하 측면에서는 개서효과가 없음에도 불구하고 전체적 안락도의 향상에 성공한 것으로 분석된다.

• Proceedings of the Korean Nuclear Society Conference
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• 1995.05a
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• pp.753-758
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• 1995

중수로 압력관용 Zr신합금을 개발하기 위하여 Batch 1(63종), Batch 2(33종), 및 Batch 3(33종)의 지르코늄합금을 설계, 제조하여 이들 합금에 대한 특성평가를 실시하였다. 설계합금은 고진공 전자빔 용해(Electron Beam Remelting), 단조(95$0^{\circ}C$), $\beta$열처리, 중간열처리, 냉간압연 및 진공열처리의 일관된 제조공정을 거쳐서 판상으로 제조되었다. 설계합금의 특성평가로 성분분석, 인장시험, 부식시험, 충격에너지시험 및 미세조직분석이 수행되었으며, Batchl-Batch3의 120여종의 지르코늄합금에 대한 특성을 종합적으로 평가하여 내부식성 및 고강도 특성의 7종 지르코늄합금을 선정하였다.