Background: Spontaneous use of the upper extremities on the affected side of patients with stroke is a meaningful indicator of recovery and may vary by the age or dominant hand of patients. No prior study has reported changes in actual amount of use test (AAUT) and motor activity log (MAL)-28 according to age and handedness in healthy adults, and AAUT inter-rater reliability for assessment of healthy adults. Objects: This study aimed to (1) research the differences in AAUT and MAL-28 according to age and handedness in healthy adults, and (2) determine the inter-rater reliability of the AAUT. Methods: Seventy healthy adults participated in this study. The MAL-28 was assessed by dividing 61 subjects into young right-handed (n1=20), young left-handed (n2=21), and older right-handed (n3=20) groups. The AAUT was assessed by dividing 63 subjects into young right-handed (n1=25), young left-handed (n2=18), and older right-handed (n3=20) groups. Student’s t-test and the Wilcoxon signedrank test were used for statistical analysis. Results: The Amount of Use (AOU) scale values for each group showed no significant differences between age groups and handedness groups in the MAL-28 (p>.05). The AAUT AOU scale value showed significant differences regarding dominant handedness in the AAUT (p<.05), but no significant differences according to age (p>.05). (2) Inter-rater reliability of the AAUT was excellent, except few items (item 9, 11, and 12). Conclusion: Although both the MAL-28 and the AAUT measured how much participants used their dominant arms in healthy subjects, the AAUT only showed significantly higher dominant arm use in left hander than the right hander. In addition, the inter-rater reliability of the AAUT was excellent. Current results can be utilized as a basic information when clinicians develop rehabilitation strategies, and AAUT was shown to be a reliable evaluation tool for measurement of upper extremity use in Korean adults, based on the reliability demonstrated by this study.

목적 : 본 연구의 목적은 작업균형 평가를 위한 한글판 라이프밸런스 척도(Korean version of Life Balance Inventory; K-LBI)를 개발하는 것이다. 연구방법 : 라이프밸런스 척도(Life Balance Inventory; LBI)의 한국어 번역, 역 번역, 원저자 검토의 과정의 거쳐 번역본을 완성하였으며 내용타당도 검증을 위해 13명의 작업치료사에게 LBI의 한국어 번역본에 포함된 53개 항목의 적합도에 대한 응답을 5점 리커트 척도로 수집하여 Item-level Content Validity Index(I-CVI)를 산출하였다. 수렴타당도는 한국판 세계보건기구 삶의 질 간편형 척도(WHO Quality of Life-Brief; WHOQOL-BREF), 한글판 Short Form-12 Health Survey Questionnaire version 2(SF-12v2)와의 상관계수를 통해 검증하였다. 신뢰도 검증을 위해 내적일치도 및 검사-재검사 신뢰도 분석을 실시했다. 결과 : 165명의 대상자에게 조사한 설문을 통해 내용타당도를 검증한 결과, K-LBI에 포함된 53개 항목의 I-CVI의 평균은 0.79로 나타났다. 수렴타당도 분석에서 K-LBI의 총괄 점수와 한국판 WHOQOL-BREF와 한글판 SF-12v2의 정신적 건강 지수(Mental Component Score; MCS)와의 상관계수는 각각 .356(p=.01), .490(p=.01)로 확인되었다. 신뢰도 검증 결과, 노인과 성인 집단에서 도출된 Cronbach’s α값은 각각 .875, .831였다. 결론 : K-LBI는 타당도와 신뢰도를 갖춘 작업균형 평가도구로 확인되었으며, 활동 참여에 대한 만족도 저하, 혹은 참여하고 있는 활동 영역 간에 불균형으로 인해 작업적 불균형을 경험하는 대상자들에게 적용하여 평가함으로써 일상생활 양식의 개선을 통한 건강증진 목적의 평가도구로 활용가능하다.

Background: Numerous studies have used smartphone applications to measure the range of motion in different joints. In addition, studies measuring the active range of motion (AROM) of the craniocervical joint have revealed high reliability. However, the subjects in these studies were all healthy subjects. No study has yet been conducted to measure the inter-rater reliability for the AROM of the craniocervical joint in stroke patients. Objects: The purpose of this study was to investigate the inter-rater reliability of the AROM of the craniocervical joint using a smartphone. Methods: The participants included 21 subjects who had strokes (17 males and 4 females). Two raters evaluated six types of craniocervical AROM, including flexion, extension, lateral flexion to the hemiplegic side, lateral flexion to the non-hemiplegic side, rotation to the hemiplegic side, and rotation to the non-hemiplegic side, using a goniometer and a smartphone to investigate inter-rater reliability. The inter-rater reliability was analyzed by intraclass correlation coefficients (ICC). Results: The inter-rater reliability of the smartphone was good for extension, lateral flexion to the hemiplegic side, lateral flexion to the non-hemiplegic side, and rotation to the hemiplegic side [ICC(2,k)=.86∼.88] and excellent for flexion [ICC(2,k)=.95]. The inter-rater reliability for rotation to the non-hemiplegic side was moderate [ICC(2,k)=.72]. Conclusion: These results suggest that the smartphone offers high inter-rater reliability for measurements of the craniocervical AROM in patients with stroke.

Product replacement (PPL) is used widely in marketing and plays crucial roles but the effects of the PPL attributes on a restaurant brand are not well known. Therefore, this study examined the effects of PPL attributes on brand awareness and brand credibility. In addition, the relationship among brand awareness, brand credibility, and brand loyalty was investigated. The study found that the characteristics of PPL, such as information and entertainment, affected brand awareness. On the other hand, inconvenience did not have any impact on brand awareness. In addition, information, entertainment, and inconvenience affected brand credibility. Furthermore, brand awareness and credibility influenced brand loyalty significantly. These results suggest that PPL can be a very effective way to advertise. Hence, PPL should be done with a sense of information and entertainment than simply with more frequent exposure to consumers, which that might cause inconvenience.

This study investigates the effects of the type of advertisement, brand extension, and consumer innovativeness on the credibility of fashion advertisements. The factorial design is constructed as a 2(type of fashion advertisement: general vs. cross-media) × 2(consumer innovativeness: high vs. low) × 2(the type of fashion brand extension: similar vs. dissimilar) three-way mixed design in which consumer innovativeness is the between-subjects variable. Subjects of this study included 210 men and women in their 20s and 30s who resid in Seoul and had SNS experiences. Frequency analysis, credibility analysis, three-way ANOVA, and simple interaction analysis were conducted using the SPSS 20.0 statistics package. The results are as follows: First, the type of fashion advertisement had a significant effect on advertising credibility. Cross-media advertisements had a more positive effect than general advertisements on all of the dependent variables. Also, the type of brand extension and consumer innovativeness showed significant effect on advertising credibility and the interaction effect between the type of fashion advertisement and consumer innovativeness was significant. Lastly, the effect of different types of brand extensions on advertising credibility showed a significant difference according to consumer innovativeness. Thus, a marketing strategy using cross-media advertising is proven to be effective in gaining consumer trust for a fashion brand.

목적 : 본 연구는 국내 재활의 결과 측정 및 지역사회 참여와 통합의 정도를 확인하기 위해 미국에서 개발된 Craig Handicap Assessment and Reporting Technique(CHART)를 번역과정을 거쳐 한국 번역판 CHART를 완성하였으며, 신뢰도 및 타당도를 검증하였다. 연구방법 : 연구 대상자로는 지역사회에 거주하는 척수손상 환자 100명과 장애가 없는 일반인 100명으로 총 200명이었다. 번역 및 역번역 검증을 통해 CHART-K를 완성하였고, 국내에 적용하기 위해 예비연구를 진행하였다. 이 후 신뢰도와 타당도를 확인하였다. 결과 : 내용타당도는 0.97로 높은 수준을 수립하였으며, 삭제된 문항은 없었다. 판별타당도 검증에서는 척수손상 환자의 총점수의 평균은 일반인 대상자보다 낮은 점수를 확인하였고 통계적으로 유의미한 차이를 보였다 (p<.01). 수렴타당도 검증에서 Korean-Community Integration Questionnaire(K-CIQ)와 상관관계 분석을 실시한 결과 .524로 통계적으로도 유의미하였다(p<.01). 내적일치도는 Cronbach’s α .628로 양호한 수준이었으며, 검사-재검사 .730~ .992로 유의미한 상관관계를 보였다(p<.01). 결론 : 본 연구를 통해 CHART를 번역하고 국내의 실정에 맞게 CHART-K를 완성하고, 신뢰도 및 타당도를 확인하였다. 따라서 척수손상 환자의 국내 재활의 결과 측정 및 지역사회 참여와 통합의 정도를 측정하고 기존 평가도구의 한계점을 보완한 도구로 활용될 수 있을 것으로 기대된다.

목적 : 본 연구는 한국형 지역사회 통합 설문지(Korean version of Community Integration Questionnaire; K-CIQ)를 개발하고, K-CIQ의 타당도 및 신뢰도를 검증하고자 하였다. 연구방법 : 대상자는 총 300명으로 뇌졸중 환자 200명과 일반인 100명이었다. 한국형 지역사회 통합 설문지의 타당도 및 신뢰도 검증을 위해 내용타당도, 판별타당도, 수렴타당도, 구성타당도의 4가지 타당도 검증과 내적일치도, 검사-재검사 신뢰도 검증을 실시하였다. 결과 : 내용타당도 결과 문항 이해도 검증에서 15문항 모두 4점대의 점수를 보였으며, 내용 타당도 지수값이 .96으로 나타났다. 판별타당도 검증 결과 뇌졸중 환자와 일반인의 K-CIQ 총점 및 각 영역별 점수의 평균에서 집단 간의 유의한 차이를 확인하였다(p<.01). 수렴타당도 검증 결과 K-CIQ와 SF-36의 상관관계가 .197로 다소 낮았지만 통계적으로 유의한 양의 상관관계를 보였다(p<.01)으며, 구성타당도 검증 결과 4개의 요인이 추출되었다. 신뢰도 연구 결과, 내적일치도 값은 .712로 높은 수준의 신뢰도를 보였다. 검사-재검사 신뢰도 결과 모든 영역에서 통계적으로 유의한 상관관계를 보였다(p<.01). 결론 : 본 연구를 통해 뇌졸중 환자의 지역사회 통합의 정도 확인 및 재활의 결과 측정을 위한 K-CIQ의 타당도와 신뢰도를 수립하였다. 이러한 결과를 토대로 K-CIQ가 국내의 다양한 재활 중재의 결과 측정 및 연구의 기초자료로 활용되고, 사회적 독립성과 지역사회 참여의 정도를 측정하기 위한 유용한 도구로 사용되기를 기대한다.

Most people seek a happy life and happiness positively affects sentiment, satisfaction with life, creativity, human relationship, business productivity, and even health and life extension. However, according to a survey in 2013, subjective happiness of adolescents (including university students) was very low compared to other age groups in Korea. Therefore this paper examined the effects of job-seeking stress, appearance recognition, financial situation, trust in government, and locus of control on university students' happiness using SEM (structural equation modeling). 207 university students in Seoul, Korea have been surveyed. At first, an initial experimental SEM model among these variables has been set up and reliability analysis has been conducted. Then multiple regression analyses on job-seeking stress and happiness as well as SEM analysis have been conducted. As a result of these analyses, the SEM model has been revised two times. The final SEM model passed the goodness-of-fit test (using RMR, GFI, NFI, CFI, and IFI indices). The final SEM model showed the followings. First, Higher job-seeking stress (especially sentimental part, rather than environment or action related parts) negatively affects happiness. Second, Trust in government also affects happiness both directly and indirectly. Third, Locus of control is affected both by trust in government and financial situation. Fourth, appearance recognition heavily affects job-seeking stress. In addition, appearance importance is higher than appearance interest, meaning that students who are not very interested in appearance usually recognize the importance of appearance. Finally, happiness is affected neither financial situation nor appearance recognition. Therefore, even either they are in a poor financial situation or not happy with their appearance, they can be happy if they have firm locus of control.

A one-shot system (device) refers to a system that is stored for a long period of time and is then disposed of after a single mission because it is accompanied by a chemical reaction or physical destruction when it operates, such as shells, munitions in a defense weapon system and automobile airbags. Because these systems are primarily related with safety and life, it is required to maintain a high level of storage reliability. Storage reliability is the probability that the system will operate at a particular point in time after storage. Since the stored one-shot system can be confirmed only through inspection, periodic inspection and maintenance should be performed to maintain a high level of storage reliability. Since the one-shot system is characterized by a large loss in the event of a failure, it is necessary to determine an appropriate inspection period to maintain the storage reliability above the reliability goal. In this study, we propose an optimal inspection policy that minimizes the total cost while exceeding the reliability goal that the storage reliability is set in advance for the one-shot system in which periodic inspections are performed. We assume that the failure time is the Weibull distribution. And the cost model is presented considering the existing storage reliability model by Martinez and Kim et al. The cost components to be included in the cost model are the cost of inspection c1, the cost of loss per unit time between failure and detection c2, the cost of minimum repair of the detected breakdown of units c3, and the overhaul cost c4 of  ≤ . And in this paper, we will determine the optimal inspection policy to find the inspection period and number of tests that minimize the expected cost per unit time from the finite lifetime to the overhaul. Compare them through numerical examples.

Considering that the effectiveness of ads varies according to the credibility of consumers, it is necessary to establish data regarding consumer credibility in relation to online reviews. To conduct a successful study on the marketing strategies of online reviews, it is also necessary to analyze the relationship between credibility and the various factors that influence the purchase intentions of consumers. Therefore, this study attempted to examine the relationship between consumer trust of on-line reviews, brand preference, ads credibility, and purchase intentions in relation to cosmetics. The study was conducted through a normative descriptive survey method using stimuli and a self-administered questionnaire. Analysis of the structural equation model was conducted for the data analysis. The results revealed that consumer reliance on online reviews of cosmetics influences brand preference, credibility of brand ads and purchase intentions. The results also revealed that consumers’ on-line reviews, brand preference, and trust of brand ads are important factors for increasing the purchase intentions. The mediation effect of brand preference and brands’ ads credibility were found in the process where on-line reviews exercise an influence on the purchase intentions. It was also found that brand preference has a stronger influence on purchase intention than credibility of brand ads. It was discovered that the credibility of on-line reviews directly influences purchase intentions more than indirectly influences. Considering the results of this study, programs that encourage customers to post on-line reviews, and strategies to promote brand preference by targeting groups that exhibit high trust in online reviews would be recommended.

As the functions and structure of the system are complicated and elaborated, various types of structures are emerging to increase reliability in order to cope with a system requiring higher reliability. Among these, standby systems with standby components for each major component are mainly used in aircraft or power plants requiring high reliability. In this study, we consider a standby system with a multi-functional standby component in which one standby component simultaneously performs the functions of several major components. The structure of a parallel system with multifunctional standby components can also be seen in real aircraft hydraulic pump systems and is very efficient in terms of weight, space, and cost as compared to a basic standby system. All components of the system have complete operation, complete failure, only two states, and the system has multiple states depending on the state of the component. At this time, the multi-functional standby component is assumed to be in a non-operating standby state (Cold Standby) when the main component fails. In addition, the failure rate of each part follows the Weibull distribution which can be expressed as increasing type, constant type, and decreasing type according to the shape parameter. If the Weibull distribution is used, it can be applied to various environments in a realistic manner compared to the exponential distribution that can be reflected only when the failure rate is constant. In this paper, Markov chain analysis method is applied to evaluate the reliability of multi-functional multi-state standby system. In order to verify the validity of the reliability, a graph was generated by applying arbitrary shape parameters and scale parameter values through Excel. In order to analyze the effect of multi-functional multi-state standby system using Weibull distribution, we compared the reliability based on the most basic parallel system and the standby system.

목적 : 본 연구는 단축감각프로파일2(Short Sensory Profile2; SSP2)을 정상아동과 발달장애아동을 대상 으로 신뢰도와 타당도를 구하고자 하였다. 연구방법 : SSP2를 6곳에 거주하고 있는 정상아동 100명과 장애아동 100명을 대상으로 신뢰도와 타당도 를 검증하였고 신뢰도에는 내적일치도와 검사-재검사 검증을 하였으며 타당도에는 내용타당도와 판별타 당도 수렴타당도 검증을 하였다. 결과 : SSP2의 감각처리영역의 내적일치도는 .89로 확인되었으며 감각처리와 관련된 행동반응영역은 .92 를 확인되었다. 검사-재검사 신뢰도의 감각처리영역은 .89에서 .90이었으며 감각처리와 관련된 행동반 응영역은 .80~.97로 유의한 상관관계를 나타내었다. 정상아동과 장애아동을 비교한 판별타당도에서도 통계적으로 유의미한 차이를 보였다. 마지막으로 SSP2와 SSP를 비교한 수렴타당도의 감각처리영역의 총 점수간의 계수는 .85이고 감각처리와 관련된 행동반응영역의 총 점수간의 상관계수는 .85로 높은 상 관관계를 보였다. 결론 : 본 연구는 SSP2의 신뢰도와 타당도를 확인하였으며 연구 결과 높은 수준을 보였으므로 SSP와 같 이 임상에서의 사용이 용이할 것으로 판단된다.

목적 : 본 연구는 가정안전 자가 평가도구(Home Safety Self-Assessment Tool: HSSAT)를 번안 후 신뢰도와 타당도를 검증하기 위함에 있다. 연구방법 : HSSAT의 번안을 위하여 번역과 역 번역의 과정을 실시하여 한국어판 가정안전 자가 평가도구 (Korean-translated Version of Home Safety Self-Assessment Tool; K-HSSAT)를 완성하였다. 그 후 내용타당도와 수렴타당도 검증을 실시하였다. 신뢰도 검증을 위하여 내적일치도와 검사-재검사간 신뢰도, 검사자간 신뢰도 검증을 실시하였다. 10명에게 해결책을 적용한 전·후 비교를 실시하였다. 결과 : K-HSSAT의 내용타당도 지수는 .94로 높게 나타나 내용타당도를 수립하였다. 수렴타당도 검증 결 과 K-HSSAT의 총점과 주거환경 위험평가(Checklist for Home Fall Hazard; CHFH)의 각 영역 간 상관계수는 .23~.52의 범위를 보였고 CHFH의 총 4개 영역 모두 의미 있는 양의 상관관계를 보였다 (p<.01). K-HSSAT의 내적일치도 Cronhach's α값은 .89를 나타내었다. 검사-재검사 신뢰도 검증 결 과 9가지 영역 모두 통계적으로 유의미한 상관관계를 나타내었다(p<.01)(p<.05). 검사자간 신뢰도 검증 결과 9가지 영역 모두 통계적으로 유의미한 상관관계를 나타내었다(p<.01). K-HSSAT의 해결책을 제 시하고 전·후 비교한 결과 적용 전 17.40±4.55, 적용 후 12.70±3.26로 통계적으로 유의한 차이를 보였다(p<.01). 결론 : 한국어판 가정안전 자가 평가도구(K-HSSAT)의 타당도와 신뢰도를 검증하였고 가정 낙상환경위 험 평가와 환경적 중재를 위한 다양성을 갖춘 도구임이 입증되었다.

PURPOSES :The purpose of this study is to perform a reliability analysis of the proposed wind load combination which governs the design of support structures of subsidiary road facilities, and to evaluate whether the target reliability of the design is satisfied.METHODS :The statistical estimation method is applied and the design period of the support structure is used to obtain the statistical property of the wind load. In addition, the statistical properties of the strength of support structures are obtained from a literature review and simulation study. Actual support structures are designed by the proposed load combination and are used as the examples to examine if the target reliability is obtained.RESULTS :The result of the reliability analysis performed by using the statistical properties of load and resistance for the support structure in this study indicates that the proposed wind load combination satisfied the target reliability index of the design. Also, the convenience of the design is achieved by adopting the same design wind velocity given in the bridge design code by applying the wind velocity ratio defined for the design period of the support structure.CONCLUSIONS :It is presented that the design using the wind load combination proposed in this study achieved the target reliability index and the design wind load for different design periods can be conveniently defined by applying the velocity ratio proposed in this study.

목적: 프리즘 분리법으로 사위검사를 시행할 때 수평사위에 대한 분리 프리즘(dissociating prism)의 신뢰도를 알아보고자 하였다. 방법: 35명을 대상(평균 22.23±2.22세)으로 자각적 굴절검사와 von Graefe법으로 사위검사를 하였다. 우안에 12 △ base-in (BI)의 측정 프리즘을 가입하고, 좌안에 4, 6, 8, 10 △ base-up (BU)의 분리 프리즘을 하나씩 무작위 순서로 가입하여 수평사위를 반복 측정 하여 수평사위에 미치는 분리 프리즘의 영향을 분석했다. 각 세팅 방법에 따른 사위검사의 신뢰도는 두 방법 간의 상관관계와 Bland-Altman분석으로 평가하였다. 결과: 분리 프리즘의 양이 증가할수록 전체적인 외사위량은 점차 감소하였다. 특히 원거리 외사위량이 유의하게 감소하였으나(p<0.05), 근거리는 유의한 차이를 보이지 않았다. 두 측정 방법 간의 비교에서 평균차이가 적고, 95% 일치도 범위가 가장 좁은 것을 기준하여 각 세팅별 신뢰도를 비교하면 원거리 및 근거리 수평사위 검사에서는 8△과 10△의 분리 프리 즘이 신뢰도가 높았다. 결론: 분리 프리즘이 8△과 10△일 때 두 측정법 간의 신뢰도가 가장 높았다. 10△의 분리 프리즘은 분리 정도가 너무 커서 피검자가 반응이 불명료하였고, 6△의 분리 프리즘은 표준 편차가 커 변동성이 컸다. 따라서 von Graefe법에 의한 사위도 측정 시 8△의 분리 프 리즘이 신뢰도가 높은 것으로 본다.