• 한국의류학회지
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• 제40권3호
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• pp.495-505
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• 2016

This study explores and selects an appropriate material that considers light and soft physical properties as well as activity for impact absorption pads that can be used to develop practical impact protective clothes worn during daily life by the elderly to reduce the impact of falls. Physical properties, impact absorption performance, and compression characteristics were evaluated on 5 types of foam, 2 types of 3D spacer fabric, and 3 types of polymer gel to select a material appropriate for the pad to be inserted into impact protective clothes. The evaluation of the physical properties showed that 3D spacer fabrics had lower density compared to other materials and polymer gels had the highest density. The elongation percentage was higher in foams than 3D spacer fabrics and EPDM foam had the highest elongation percentage. The impact absorption performance of honeycomb polymer gel was better than foams and 3D spacer fabrics. As a result of looking into compression energy and compression characteristics of materials, 'CR foam A' was found to absorb the largest amount of compression energy, 24.1%, among foams and polymer gels. A high energy absorption rate of 50.0% (or above) was indicated by 3D spacer fabrics; however, foams and polymer gels showed a progressive deformation of energy compression / recovery curve with 3D spacer fabrics that showed drastic deformation. Based on characteristics of materials, 'CR foam C' and EPDM with relatively high absorption performance can be used as protective pad materials among foams. Among polymer gels, 2 open-type polymer gels that have relatively low impact protective performance but a relatively lighter weight on human body (compared to closed-type) are considered appropriate protective pad materials.

• 한국음향학회지
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• 제42권2호
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• pp.143-151
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• 2023

본 논문은 표준 중량충격원을 이용한 건축물의 바닥충격음 차단성능을 측정하는 경우 측정불확도를 평가하는 방법을 다루었다. 반복 측정의 영향 이외에도 측정 위치의 영향, 가진 위치의 영향, 음압측정에 사용된 장비의 영향 및 충격원의 영향 등을 고려하였다. 평균 최대 바닥충격음 레벨 측정의 수학적 모델을 제시하고 요인별 불확도 평가방법을 제안하였으며, 제안한 방법을 실제 측정 결과에 적용하여 평균 최대 바닥충격음 레벨 및 측정불확도를 평가하였다.

• 환경영향평가
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• 제4권2호
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• pp.71-91
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• 1995

In order to develop an appropriate set of criteria applicable for environmental impact assessment (EIA) of natural forest 8 items are proposed. The criteria are vegetation distribution area (DA), distribution pattern (DP), size (S), diameter of breast height of tree (DBH), humus (H), sustainment (ST), successional stage (SS) and impact of adjacent ecosystem (IAE), Each criterion has an interval which minimum 1 score to maximum 5 score Forest Evaluation Index (FEI) was obtained as the sum of 8 criteria value. Above 70% is considered to be absolutely conservative and from 50% to 70% range of total score is to be considered conservative. In the case of the Sancho˘ng Pumping-up Power Plant of Mt. Chiri, 8 criteria were applied base on actual vegetation map. Pinus densiflora community got 73%(29 scores) and Quercus variabilis - Q. serrata community got 60%(24 scores). This may be said that this local vegetation has high ecological potentiality. These criteria cannot always be absolutely evaluation tool. So it is expected to take the more time to be developed further, and holistically added by the other field such as fauna, geological feature etc.

• KIEAE Journal
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• 제16권6호
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• pp.151-157
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• 2016

Purpose: The purpose of this study is to develop and apply an environmental impact assessment program for apartment building elements, based on the building materials of the LCI DB, which can link the LCA results of building materials and buildings. Method: For this purpose, a framework for building elements was established, and several building material combinations were developed. In addition, the LCA method for quantifying environmental load emissions from the building materials of each site was applied to establish an environmental impact database of the building materials of the LCI DB. Result: An environmental impact assessment program, based on a Microsoft Excel worksheet, was developed for apartment building elements. This program can link the environmental impact assessment of building materials and building units. To validate the program evaluation results that were obtained in this study, a comparative analysis was carried out using the results of existing evaluation methods. The error rate was estimated to be 5% for environmental impact assessment using existing evaluation methods.

• 콘크리트학회논문집
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• 제15권6호
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• pp.924-929
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• 2003

A majority of infrastructures has been deteriorated over time. Therefore, it is very important to verify the quality of construction, and the level of structural deterioration in existing structures, to ensure their safety and functionality. Many researchers have studied non-destructive testing (NDT) methods to identify structural problems in existing structures. The impact echo technique is one of the widely used NDT techniques. The impact echo technique has several inherent problems, including the difficulties in P-wave velocity evaluation due to inhomogeneous concrete properties, deterioration of evaluation accuracy where multiple reflection boundaries exist, and the influence of the receiver location in evaluating the thickness of the tested structures. Therefore, the objective of this paper is to propose an enhanced impact echo technique that can reduce the aforementioned problems and develop a Virtual Instrument for the application via a thickness evaluation technique which has same technical background to find deterioration in concrete structures. In the proposed impact echo technique, transfer function from dual channel system analysis is used, and coherence is improved to achieve reliable data. Also an averaged signal -ensemble- is used to achieve more reliable results. From the analysis of transfer function, the thickness is effectively identified.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2000년도 춘계학술대회논문집
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• pp.1741-1746
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• 2000

Recently the impact sound insulation performance is regarded as one of the most important factor in determining the quality of apartment house. So many studies were carried out to improve these performance and to propose an appropriate evaluation method and standard of floor impact sound insulation for apartment house by psycho-acoustic method in the laboratory. This study was carried out the field psycho-acoustic test to find a correlation between physically measured values and psychological response in apartment house, and the results will be used to establish the appropriate evaluation method and standard of floor impact sound insulation.

• 한국소음진동공학회논문집
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• 제16권5호
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• pp.537-543
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• 2006

The impact sound of the golf club is one of the major factors to purchase it. Sound quality metrics has been mostly developed for harmonic sounds. Sound quality evaluation techniques for the impact sound have been contrived in this study. Jury test, one of the typical subjective evaluation scheme, is carried out for evaluating the sound quality of 13 different golf drivers, which classification results are assumed to be correct answers. Conventional objective evaluation methods such as Zwicker loudness sensory pleasantness are calculated. Wavelet analysis and instantaneous loudness are applied in order to evaluate the sound quality of transient sounds, which scheme shows better correlation with the results from jury test.

• 한국문헌정보학회지
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• 제55권2호
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• pp.111-130
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• 2021

본 연구는 최근 공공도서관 성과평가의 국제적 동향과 해외 성과평가 실무 동향을 조사할 목적으로 수행되었다. 문헌조사를 통해 성과평가에서 현재 주류적으로 적용되는 이론모델로 논리모델을 검토하는 한편 해외 공공도서관 성과평가 실제를 미국 동부 세 지역의 공공도서관을 직접 방문하여 심층면담을 수행함으로써 사례조사하였다. 연구 결과, 2010년 전후부터 국제 도서관계의 성과평가는 도서관이 지역주민의 삶과 지역사회에 미치는 실제적 영향력을 측정하는 경향이 주류를 이루며 이를 실질적으로 지원할 수 있는 방법을 제시하는 노력이 계속되어 온 것으로 파악된다. 측정방법에 대한 국제 가이드라인과 함께 국가 차원의 성과지표 개발 노력 역시 활발하다. 개별 공공도서관들도 그 지역의 발전계획에 따라 전략목표를 수립하고 도서관 성과도 그에 따라 측정하는 경향이 뚜렷했다. 기존의 단순 산출지표를 넘어 장기적으로 지역주민 삶과 지역발전을 위해 어떤 변화를 만들었는지 그 영향력을 측정하는 성과지표가 강조되고 있었다. 그러나 성과평가 실무에서 활용되는 영향지표는 여전히 미흡하여 풀어야 할 과제로 남아 있다.

• 한국콘텐츠학회논문지
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• 제16권1호
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• pp.415-423
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• 2016

문화영향평가는 중앙정부나 지방자치 단체가 각종 정책이나 계획 또는 사업을 수행할 때 국민의 문화환경에 영향을 미치는 부정적인 요소는 최소화 시키고 긍정적 요소는 극대화 시켜 국민의 삶의 질을 향상시키기 위한 제도로 2013년 문화기본법에 의해 도입되었다. 따라서 문화체육관광부에서는 시행착오를 줄이고 성공적인 제도로 안착시키기 위해 문화영향평가 시범사업을 추진하고 있다. 본 논문에서는 문화영향평가 제도의 성공적 안착을 위하여 선행연구, 해외 사례조사, 기타 영향평가제도 분석 등을 통해 시사점을 도출하고 도출된 시사점을 중심으로 전문가 조사를 통해 평가대상, 평가지표, 평가절차, 평가기관에 대한 개선 방안을 제시하였다. 향후 완벽한 제도로 운영되기 위해서는 평가대상의 규모, 세부 평가지표의 설정, 평가 위원회 구성 및 운영방법, 문화영향평가사 제도 도입 등에 관한 추가적인 보완 연구가 필요하다.

• 한국의류산업학회지
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• 제11권2호
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• pp.252-261
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• 2009

The purpose of this study was to investigate the influence of female university students' cosmetic purchase motivation on cosmetic attribute evaluation and brand repurchase intention. Questionnaires data of 202 female university students who had purchase experience of cosmetic product in recent 6 months through off-line were analyzed. The results are as follows. First, situational purchase motivation had a positive impact on extrinsic and economic attributes. Second, intrinsic purchase motivation had a positive impact on extrinsic, utilitarian, aesthetic, and economic attributes. Third, hedonic purchase motivation had a positive impact on extrinsic attribute. Fourth, aesthetic attribute had a positive influence on brand repurchase intention and extrinsic attribute had a negative effect on brand repurchase intention. Therefore, when cosmetic companies dealing with female university students' cosmetic product establish marketing strategies, they need to pay attention to aesthetic attribute evaluation and intrinsic purchase motivation to highten their brand loyalty.