• 한국방사선학회논문지
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• 제13권5호
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• pp.721-728
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• 2019

본 연구에서는 20대 초반의 남, 여를 대상으로 초음파 방식으로 측정된 골밀도와 신체조성 및 배근력의 관계에 대해 알아보았다. D대학에 재학 중인 61명의 학생에 대해 IRB 승인과 참여자 동의 후 설문조사, 초음파방식 골밀도 및 신체조성, 배근력을 측정하였다. 골밀도는 주로 사용하는 측 종골을 측정하여 T-값을 두 그룹($T-score{\geq}-1.0$; T-score<-1.0)으로 나누었다. 생체전기 저항법을 이용하여 신체조성을 측정하였고, 배근력은 2회 측정하여 평균값을 구하였다. 모든 통계분석은 SPSS ver. 22.0 을 사용하여 실시하였다. 신체활동 또는 체질량지수가 증가할수록 골밀도 및 신체조성의 근육량도 증가하였다. T-값이 높은 그룹이 낮은 그룹 보다 신체조성의 근육량 및 골격근량, 신체발달이 높았지만 통계학적인 유의성은 없었다(p>0.05). 배근력에서도 T-값이 높은 그룹이 낮은 그룹 보다 높았다(101.1 vs. 92.1, p=0.308). 남, 여그룹에서 골밀도 T-값과 신체조성의 골격근과 근육량은 보통 수준의 유의한 양의 상관성을 보였고(p<0.05), 배근력은 신체조성의 골격근과 근육량, 신체발달에서 골밀도 보다 높은 유의한 양의 상관성을 보였다(p<0.001). 여자그룹이 남자그룹 보다 골밀도 T-값과 신체조성의 골격근과 신체발달에서 높은 상관성을 보였다. 남자 그룹에서 배근력과 골밀도의 T-값과는 유의한 상관성을 보이지 않았지만(r=0.176, p=0.319), 여자 그룹에서는 보통 수준의 유의한 상관성을 보였다(r=0.591, p=0.001). 이상과 같이 초음파 방식으로 측정된 골밀도와 신체조성, 배근력은 상호 유의한 관련성을 보였다.

• Animal Bioscience
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• 제34권1호
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• pp.154-160
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• 2021

Objective: The effect of environmental enrichment on the behaviour of piglets in the nursery phase was evaluated. Methods: A total of 450 hybrid pigs (21 day old), including both females and uncastrated males, weighing approximately 6 kg, were distributed in a completely randomised design with 3 treatments and 3 replicates of 50 animals each. The treatments were: i) pen without environmental enrichment (control), ii) treatment consisting of continuous environmental enrichment (CEE) with rubber balls throughout the experimental period, and iii) treatment consisting of environmental enrichment with washed balls (EEWB) during the whole experimental period which were removed daily for washing. For the behavioural evaluation, 10 animals were randomly selected per replicate. The behavioural assessments were performed once a week, from 8 am to 6 pm, using images captured with a video camera. The data were submitted to non-parametric analyses, the means were compared using the Bonferroni test, and Person's correlations were also calculated. Results: A statistical difference (p = 0.001) was observed in the B5 (playful) behaviour; the animals in the EEWB treatment group had a higher frequency of this behaviour than animals in the control treatment group. The animals in the control group showed a higher frequency of B7 behaviour (lying down) (p = 0.026) than those in the EEWB and CEE treatment groups. The animals in the control group had a higher frequency of the B9 (belly nosing) behaviour than those in the EEWB group (p = 0.015). There was a tendency towards a higher frequency of behaviour B3 (walking in the pen) (p = 0.067) when the animals received the control treatment than treatments EEWB or CEE. Conclusion: The use of an enriching object improved the animal welfare and altered the correlation between the evaluated behaviours compared to the animals that did not have environmental enrichment.

• 한국프랜차이즈경영연구
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• 제10권2호
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• pp.33-47
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• 2019

Purpose - The purpose of this study is to classify and analyze existing studies from various angles through systematic literature review of how human resources development has been researched in the domestic franchise business. These studies are intended to suggest the direction in which human resource development research should be conducted in the future in the franchise business. Research design, data, and methodology - This study is based on systematic literature review methodology. It has gone through the process of subject language setting, literature search routing, search term selection, literature selection, literature classification and literature analysis. The systematic literature review identified 59 peer-reviewed dissertations and scientific journal publications on the subject of HRD in Korea franchise business. Result - This study analyzed by research methods, research industries, research population and dependent variable using the systematic review process. The literature studied in the 2000s mainly led to research on education and training of franchise employees in beauty franchise business. In the literature studied since 2010, human resources development was mainly studied in the supervisor in the restaurant franchise business, and in the study of competence rather than education and training. According to the research methods, statistical methods were mostly relatively simple, such as t-test or one-way distribution analysis until the 2000s, and after 2010, in-depth and structural studies using multiple return analysis, structural method analysis, path analysis, multi-dimensional scale analysis, AHP, etc were conducted. When classified by study dependant, early research until the 2000s focused on the study of education and training, which is an independent variable, on the satisfaction of education programs, job satisfaction, and immersion. On the other hand, studies conducted since 2010 have produced more complex results using various medium variants, and those related to management performance and relationship performance have been mainly studied, rather than the satisfaction of the education itself. Conclusions - While the domestic franchise business is expanding in terms of quantity, such as the number of franchises and franchises, the development in terms of quality for the joint growth of franchises and franchisees is still lacking. In order for the franchisee to continue to grow with each other, the franchisee must identify and develop their current performance or expected capabilities through capacity modeling at various targets and levels.

• 한국프랜차이즈경영연구
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• 제10권4호
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• pp.19-29
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• 2019

Purpose: In beauty industry, service quality is very critical, because it impacts on the customer's positive attitude and behavior to the beauty salon or beauty brand. Thus, this research examines the effects of service attributes on customer satisfaction and loyalty in beauty salon. This research suggests the guidelines for how beauty salons should manage their physical environment, price policy, professional skills, and employees that improve management and business performance. Research design, data, and methodology: This study examines the structural relationship between service attributes, customer satisfaction, and loyalty. Service attributes divide into four sub-dimensions such as servicescape, price service, technical service, and employee service. In order to test the purposes of this research, research model and hypotheses were developed. All constructs were measured with multiple items developed and examined in previous studies. A total of 160 questionnaires were distributed and collected, and 150 were used for analysis except 10 that were unresponsive or unfaithful. The data were analyzed using SPSS 22.0 and SmartPLS 3.0 statistical package program. Result: The results of this research are as follows. First, all sub-dimensions of service attributes such as servicescape, price service, technical service, and employee service have significant positive impacts on satisfaction. Second, customer satisfaction have significant impact on loyalty. Conclusions: This study suggests an integrated model of the relationship that the characteristics of beauty salon service attributes affect customer loyalty through satisfaction, and suggests how to manage and allocate limited resources in the beauty industry. The findings of this research indicate that the level of customer satisfaction is shown to be increased by servicescape, technical characteristics, value of money, and human attributes. Thus, beauty salon management should focus on the relationship with their customers how to improve customer loyalty through satisfaction. The quality of beauty service influences customer's attitudes and behaviors toward beauty salon. Considering the beauty business, where the quality and customer satisfaction of beauty services are determined by the hairdresser's beauty skills,, the beauty salons must find ways to improve their skills and new trend of hair style. If beauty salon customers perceive the high quality of beauty service, they revisit beauty salon and recommend it to others.

• Journal of Nutrition and Health
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• 제53권6호
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• pp.688-701
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• 2020

배달음식 주문 경험이 있는 20-50대의 성인남녀를 대상으로 배달음식 제품과 서비스의 품질개선방안 마련을 위한 기초자료를 제공하기 위해 설문조사를 실시한 결과는 다음과 같다. 월1회 이상 배달음식을 주문한 총 574명의 설문을 통계분석했을 때, 배달음식 선택속성에 대한 중요도 평가점수는 '위생상태' (4.72점), '음식의 맛' (4.64점), '배달의 정확성' (4.40점) 순으로 높았고, 만족도 평가점수는 '음식의 맛' (4.32점), '배달의 정확성' (4.26점), '배달 어플의 이용 편리성' (4.21점) 순으로 높았다. 또한, IPA 결과 우선적으로 개선이 필요하다고 평가된 항목은 '배달비', '할인 혜택 제공', '충분한 메뉴 설명', '불만의 신속처리' 였다. 배달음식에 대한 전체적인 만족도 (5점 척도)는 평균 4.01점이었다. 배달음식 만족도 요인에 대한 요인 분석 결과 '배달 플랫폼의 품질', '배달서비스의 품질', '편의성과 다양성', '배달음식의 품질', '건강과 안전'의 5개 요인이 추출되었고, 배달음식에 대한 전체적인 만족도와 배달음식 만족도 요인, 연령, 배달음식 이용 빈도, 1인 1회 평균 구매 가격 간의 상관관계 분석 결과 전체적인 만족도와 배달음식 이용 빈도, 배달음식 만족도 요인 간에 유의적인 정 (+)의 상관관계를 나타냈다(p < 0.01). 배달음식 이용 고객의 전체적인 만족도에 미치는 영향 요인을 살펴보고자 다중회귀분석을 실시한 결과 배달음식 만족도 요인 5개 모두 전체적인 만족도에 유의적인 영향을 주는 것으로 분석되었다 (p < 0.001). 따라서 배달음식 이용 고객의 만족도 향상을 위해서는 배달 플랫폼의 품질뿐만 아니라 배달음식의 품질, 배달서비스의 품질, 편의성과 다양성, 건강과 안전 요인에 대해서 지속적인 개선이 필요하다고 판단된다.

• 한국의료질향상학회지
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• 제26권2호
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• pp.86-94
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• 2020

Purpose: This study aimed to identify current quality control (QC) practices of primary care clinics participating in the National Cancer Screening Program (NCSP) in Korea. Methods: A nationwide survey using a structured questionnaire was conducted among the primary care clinics participating in the NCSP, which were selected by a proportionate stratified sampling. The questionnaire consisted of general information about the responding clinics and the scope of QC activities undertaken. A total of 360 clinics responded and the set of data was then analyzed with Chi-square test and multivariable logistic regression analysis. Results: Among 360 respondents, 332 (92%) reported that they were involved in the QC activities. Most frequently performed QC activities were 'maintenance of facility and instruments' (89%) and 'staff training' (85%). The analysis revealed, with statistical significance (p<.05), that there was an association between certain characteristics of the clinics and the scope of QC activities. These findings also indicated that the diversity of QC practices varies according to the size of the clinics. The clinics screening more types of cancer, those with more screenees, and those with more employees were more likely to implement various QC activities including 'maintenance of facility and instruments', 'external quality control', and 'management of screening data'. Conclusion: To our knowledge, this is the first study to investigate the current status of QC activities conducted among primary care clinics participating in the NCSP. The results of this survey can be used as a basis for further development of policies on quality management of small- and medium-sized primary care clinics in Korea. However, further studies encompassing various aspects of QC activities and management of primary care clinics are needed to assess the current situation in a concise manner.

• 한국지반환경공학회 논문집
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• 제12권4호
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• pp.25-31
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• 2011

본 연구의 목표는 전자빔공정을 통한 1,4-dioxane 처리의 최적화를 이루기 위해 실험계획법을 적용하는 것이다. 주요 인자를 1,4-dioxane removal efficiencies(%), TOC removal efficiencies(%)로 반응표면분석법(RSM) 중 중심합성실험법을 이용하여 수학적으로 표시하였다. 1,4-dioxane의 농도를 "$x_1$", Irradiation intensity를 "$x_2$"로 지정하였다. 1,4-dioxane 농도와 removal efficiencies(%)의 코드화된 회귀방정식은 $y=71.00-10.85x_1+20.67x_2+{1.53x_1}^2-{7.92x_2}^2-1.23x_1x_2$, 1,4-dioxane 농도와 TOC Removal efficiencies(%)의 코드화된 회귀방정식은 $y=44.48-13.25x_1+9.54x_2+{5.43x_1}^2-{1.35x_2}^2+4.45x_1x_2$로 나타났다. 모델 예측식의 $R^2$(Adj.)가 90%이상으로 실험적인 관찰결과 잘 맞는 것으로 나타났다. 마지막으로 조류 Pseudokirchneriella Subcapitata를 이용하여 전자빔에 의한 1,4-dioxane에 대한 독성평가를 실시한 결과 전자빔 조사선량의 증가에 따라 생물학적 방해영향이 저감되었다.

• 한국전산구조공학회논문집
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• 제34권1호
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• pp.25-33
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• 2021

머신러닝 기법의 발달과 함께 기계에서 발생하는 다양한 종류(진동, 온도, 유량 등)의 데이터를 활용하여 기계의 상태를 진단하고 이상 탐지 및 비정상 분류 연구도 활발히 진행되고 있다. 특히 진동 데이터를 활용한 회전 기계의 상태 진단은 전통적인 기계 상태 모니터링 분야로 오랜 기간 동안 연구가 진행되었고, 연구 방법 또한 매우 다양하다. 본 연구에서는 가정용 에어컨에 사용되는 로터리 압축기에 가속도계를 직접 설치하여 진동 데이터를 수집하는 실험을 진행하였다. 데이터 부족 문제를 해결하기 위해 데이터 분할을 수행하였으며, 시간 영역에서의 진동 데이터로부터 통계적, 물리적 특징들을 추출한 후, Chi-square 검증을 통해 고장 분류 모델의 주요 특징을 추출하였다. SVM(Support Vector Machine) 모델은 압축기의 정상 혹은 이상 유무를 분류하기 위해 개발되었으며, 파라미터 최적화를 통해 분류 정확도를 개선하였다.

• 대한통합의학회지
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• 제9권1호
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• pp.203-217
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• 2021

Purpose: The purpose of this meta-analysis was to examine the high-level evidence of the effects of manual therapy on musculoskeletal diseases. Methods: Domestic databases were searched for studies that conducted clinical trials associated with manual therapy on chronic musculoskeletal diseases. A total of 591 studies published between 2005 and 2018 were identified, with 18 studies satisfying the inclusion data. The studies were classified according to patient, intervention, comparison, and outcome (PICO). The search outcomes were items associated with pain and physical function. The 18 studies included in the study were evaluated by using the R meta-analysis (version 4.0). The quality of 18 randomized control trials was evaluated by using the Cochrane risk of bias (ROB). The effect sizes were computed as the corrected standardized mean difference (SMD). Subgroup and meta-regression analyses were also used. Egger's regression test was carried out in order to analyze the publication bias. Cumulative meta-analysis and sensitivity analysis were also conducted in order to analyze the data error. Results: The following factors showed the large effect size of manual therapy on chronic musculoskeletal diseases: pain (Hedges's g = 2.66; 95% CI = 1.47 ~ 3.85), and physical function (Hedges's g = 2.15; 95% CI: 1.22 ~ 3.08). The subgroup analysis only showed a statistical difference in the type of manual therapy (pain) and outcome (physical function). No statistically significant difference was found in the meta-regression analysis. Publication bias was found in the data, but the results of the trim-and-fill method showed that such bias did not largely affect the obtained data. Furthermore, there were no data errors in the cumulative meta-analysis and sensitivity analysis. Conclusion: This study provides evidence for the effectiveness of manual therapy on chronic musculoskeletal diseases in pain and physical function. Subgroup analysis suggests that only the type of manual therapy for pain and the type of outcome for physical function differed in effect size.

• 한국운동역학회지
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• 제31권1호
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• pp.1-15
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• 2021

Objective: The aim of this study was to investigate 1) the difference in static lower extremity alignment (SLEA) according to a history of lateral ankle sprain (LAS), 2) to identify SLEA factors affecting LAS, and 3) to present the cut-off value and 4) the usefulness and limitations of the SLEA measurement. Method: This case-control study recruited 88 men (age: 27.78±4.69 yrs) and 39 women (age: 24.62±4.20 yrs) subjects with and without LAS. SLEA measurement protocol included Q angle, tibiofemoral angle, genu recurvatum, rear foot (RF) angle, tibal varum and torsion, navicular drop, ankle dorsiflexion range of motion (DF ROM). Independent t-test, logistic regression and receiver operating characteristic (ROC) curve were used for statistical analysis. Results: Men with a history of LAS had significantly smaller Q angles both in standing and in supine position, while women with a history of LAS had significantly greater DF ROM in non-weight bearing (NWB; p < 0.05). Logistic regression model suggests tibial varum (OR = 0.779, p = 0.021) and WB DF ROM (OR = 1.067, p = 0.045) were associated with LAS in men. In case of women, there were no significant SLEA factors for LAS, however, ROC curve analysis revealed standing RF angle (AUC = 0.647, p = 0.028) and NWB DF ROM (AUC = 0.648, p = 0.026) could be affecting factors for LAS. Conclusion: There are differences in SLEA according to the history of LAS, furthermore, the identified items were different by sex. In case of men, tibial varum and WB DF ROM affect LAS occurrence. Standing RF angle and NWB DF ROM of women could be a predictor for LAS. However, since the sensitivity and specificity in most of the SLEA measurements are low, kinematic in dynamic tasks should be considered together for a more accurate evaluation of LAS risk.