• 제목/요약/키워드: Risk Sensitivity

검색결과 823건 처리시간 0.033초

Testing the Mediating Role of Perceived Risk of COVID-19 and the Moderating Role of Age in the Relationship between COVID-19 related Information Sensitivity and Personal Preventive Behaviors

  • Hong, Kyung-Wan;Kim, Hyeon-Cheol
    • International Journal of Internet, Broadcasting and Communication
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    • 제14권2호
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    • pp.1-9
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    • 2022
  • The influence of information sensitivity during the COVID-19 pandemic on perceived risk and personal preventive behaviors of consumers in China had been investigated. The participants were Chinese individuals experiencing the pandemic as it happened. Participants voluntarily completed an online questionnaire to provide their COVID-19 information sensitivity, their perceived COVID-19 risk, preventive behavior and their respective age. Our study discovered that COVID-19 information sensitivity positively influence perceived risk and preventive behavior. Moreover, young individuals show higher levels of online information sensitivity, which influenced their personal protective behavior when compared to that of middle-aged and elderly participants. Furthermore, Perceived risk significantly affected preventive behaviors. The results of this study may assist the government and marketeers in comprehending information sensitivity which can affect consumers' protective behavior toward reducing COVID-19 infections.

소셜커머스의 특성이 구매의도에 미치는 영향 -모바일 앱 사용자의 지각된 위험과 가격민감성의 조절효과- (Effects of Characteristics of Social Commerce on Purchase Intention -Moderating Effects of Perceived Risk and Price Sensitivity of Mobile Application Users-)

  • 최예지;이미아
    • 한국의류학회지
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    • 제40권3호
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    • pp.574-589
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    • 2016
  • This research investigates the characteristics of the mobile social commerce and explores the moderating effects of perceived risk and price sensitivity. This survey targeted consumers in their 20s to 30s who use mobile social commerce applications. We used 261 questionnaires for the final statistical analysis. Descriptive analysis, factor analysis, reliability analysis, and hierarchical regression analysis were applied in the data analysis. The results are summarized as follows. First, characteristics of mobile social commerce are composed of economics, informativeness, entertainment and promotion. Second, perceived risk (which had a negative effect on purchase intention) had moderating effects between perceived risk and economics or entertainment. Third, price sensitivity (which had a positive effect on purchase intention) had a moderating effect between price sensitivity and promotion. This study contributes to the disclosure of the role of perceived risk and price sensitivity as moderating factors between the characteristics of mobile social commerce and purchase intention. Finally, useful implications (both academic and practical) are provided for fashion retail managers.

해외직접구매 소비자의 지각된 위험과 커뮤니티 이용동기, 가격민감도가 고객만족에 미치는 영향 - 유·아동복 구매자를 중심으로 - (Effects of perceived risk, community usage motive and price sensitivity of overseas direct purchase consumers on customer satisfaction - Focus on children's wear customers -)

  • 김기연;황선진
    • 복식문화연구
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    • 제26권6호
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    • pp.951-965
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    • 2018
  • The purpose of this study was to investigate the effect of perceived risk, community usage motive, and price sensitivity of customers who purchase children's wear directly from overseas on customer satisfaction. Specifically, this study is aimed at verifying the moderating effect of price sensitivity when perceived risk and community usage motive significantly influence customer satisfaction. A survey was conducted among consumers who experienced directly purchasing children's wear from overseas and engaging in communities. A total of 415 questionnaires were distributed, which 41 responses were insincere and excluded; thus, 374 responses were analyzed. Results of this study are as follows. First, the analysis on how perceived risk and community usage motive influence customer satisfaction reveals the significant influence of economic and social psychological risk on customer satisfaction. Moreover, informational, recreational, and social emotional usage motive have a significant influence on customer satisfaction. Second, the effect of perceived risk and community usage motive on customer satisfaction based on different levels of price sensitivity was verified. As a result, delivery and economic risks affect customer satisfaction for consumers with high price sensitivity. Moreover, recreational usage motive has a significant influence on customer satisfaction for high price sensitive consumers. In conclusion, perceived risk negatively impacts customer satisfaction. Therefore, it is essential to provide a system that can reduce the perceived risk of consumers who purchase children's wear directly from overseas.

확률기반 해상위기평가에서 실시간 민감도를 이용한 위기수준의 단계 구분 수 결정에 관한 연구 (Determining the Number of Risk Level Using Real-time Sensitivities in the Probabilistic Maritime Risk Evaluation)

  • 강상근
    • 해양환경안전학회지
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    • 제20권6호
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    • pp.685-691
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    • 2014
  • 해상에서 발생하는 위기의 확률적인 평가결과는 확률(P=0.0~1.0)로 나타난다. 이러한 확률적인 위기평가결과는 위험한 정도를 쉽게 알기 위하여 일반적으로 평가의 기준이 되는 위기허용수준(Risk Acceptance Criteria, RAC)을 이용하여 지수(index)로 나타낸다. 현재 RAC은 3단계, 5단계, 7단계 등으로 구분하는데, 구분한 단계 수가 위기평가에 적합한지를 평가할 필요가 있음에도 불구하고 관련 연구가 전무한 실정이다. 본 연구에서는 RAC의 단계 구분 수에 따른 민감도(Sensitivity)와 민감도의 분포특성을 이용하여 최적의 RAC 구분 단계 수를 정할 수 있는 평가기법을 제안하였다. 사전 연구결과로부터 획득한 확률적인 위기평가 데이터에 대해서 제안한 기법을 적용한 결과, 민감도가 10배 이내로 형성되는 최적의 RAC 구분 단계 수를 결정할 수 있었고, 이를 통해서 제안한 방법의 유효성을 확인하였다.

교통과 지역의 특성에 따른 대설의 실시간 피해 위험도 분석 연구 (A Study on the Real-Time Risk Analysis of Heavy-Snow according to the Characteristics of Traffic and Area)

  • 하광림;정용철;유진영;이준희
    • 한국산업정보학회논문지
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    • 제27권6호
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    • pp.77-93
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    • 2022
  • 본 연구에서 대설의 직접, 간접적인 피해에 영향받는 요소들에 대해 지역적 특성을 반영해 위험도를 분석하는 알고리즘을 제시한다. 229개의 지역별로 대설피해의 영향을 받는 요소들을 영향변수로 선정하고 피해액과의 관계를 통해 민감도라는 개념을 도출한다. 기상 상태(적설량, 습도, 기온)와 민감도를 독립 변수로 설정하고 독립 변수의 변화에 따라 도출된 위험도를 종속변수로 설정해 머신러닝(XGBoost) 알고리즘을 이용한 대설피해 위험도 예측 모델을 개발했다.

우리 나라 노인의 영양부족위험 진단을 위해 개발된 간이조사표의 타당성 평가 (Evaluation of the Validity of a Simple Screening Test Developed for Identifying Korean Elderly at Risk of Undernutrition)

  • 이정원;김경은;김기남;현태선;현화진;박영숙
    • Journal of Nutrition and Health
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    • 제33권8호
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    • pp.864-872
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    • 2000
  • This study intended to evaluate the validity of the simple nutrition screening test that had been developed with the elderly living in Cheongju as a subject. Nutrition screening score(NSS) and reference standards for nutritional and health status(nutrient intakes, mean adequacy ratio, perceive health, and serum albumin, hematocrit, and hemoglobin) were estimated by using the date obtained in 1996 from the 174 elderly living in Taejon, Statistical analysis showed significant correlations between mean adequacy ratio(MAR) and NSS(r=0.341) and also between NSS and biological indices such as albumin and hematocrit, Around 65-75% of the elderly with perceive health and low level of serum albumin, hemoglobin and hematocrit had NSS$\leq$ll. Sensitivity, specificity, and positive predictive values(PPV) were calculated from the crosstabulation of the three categories of NSS(high, moderate, and low nutritional risk) and low categories MAR(< 0.75, undernutrition;$\geq$0.75, normal) to validate the cut-off point for high or low nutritional risk by NSS. It was suggested that point l1 was appropriate as a criterion to determine high risk of undernutrition, but point 16 was better than 17 as criterion to determine low nutritional risk in the Taejon elderly. When point ll was used as a criterion of high nutritional risk, sensitivity, specificity, and PPV are 59.5, 60.5 and 82.1 respectively. When point 16 was used as a criterion of low nutritional risk, sensitivity, specificity, and PPV are 25.6, 95.4, and 64.7%, respectively. In conclusion, nutrition screening test that had been developed can be a simple, easy, and proper instrument to classify the high risk group of undernutrition. A further validation study seems to be required among other groups of individuals for the screening test to the finalized as a more valid instrument identifying Korean elderly at nutrition and health risk(Korean J Nutrition 33(8) : 864-872, 2000)

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Average performance of risk-sensitive controlled orbiting satellite and three-degree-of-freedom structure

  • Won, Chang-Hee
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1995년도 Proceedings of the Korea Automation Control Conference, 10th (KACC); Seoul, Korea; 23-25 Oct. 1995
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    • pp.444-447
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    • 1995
  • The satellite in a circular orbit about a planet with disturbances and a three-degree-of-freedom (3DOF) structure under seismic excitations are modeled by the linear stochastic differential equations. Then the risk-sensitive optimal control method is applied to those equations. The mean and the variance of the cost function varies with respect to the risk-sensitivity parameter, .gamma.$_{RS}$ . For a particular risk-sensitivity parameter value, risk-sensitive control reduces to LQG control. Furthermore, the derivation of the mean square value of the state and control action are given for a finite-horizon full-state-feedback risk-sensitive control system. The risk-sensitive controller outperforms a classical LQG controller in the mean square sense of the state and the control action.

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CalTOX 모델을 이용한 벤젠 종합위해성평가의 불확실성 분석과 민감도 분석 (Uncertainty and Sensitivity Analyses of Human Aggregate Risk Assessment of Benzene using the CalTOX Model)

  • 김옥;이민우;송영호;최진하;박상현;박창용;이진헌
    • 한국환경보건학회지
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    • 제46권2호
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    • pp.136-149
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    • 2020
  • Objectives: The purpose of this study was to perform an aggregate human risk assessment for benzene in an industrial complex using the CalTOX model and to improve the reliability and predictability of the model by analyzing the uncertainty and sensitivity of the predicted assessment results. Methods: The CalTOXTM 4.0 beta model was used to evaluate a selected region, and @Risk 7.6 software was used to analyze uncertainty and sensitivity. Results: As a result of performing the aggregate risk assessment on the assumption that 6.45E+04 g/d of benzene would be emitted into the atmosphere over two decades, 3% of the daily source term to air remained in the selected region, and 97% (6.26E+04 g/d) moved out of the region. As for exposure by breathing, the predicted LADDinhalation was 2.14E-04 mg/kg-d, and that was assessed as making a 99.99% contribution to the LADDtotal. Regarding human Riskcancer assessment, the predicted human cancer risk was 5.19E-06 (95% CI; 4.07E-06-6.81E-06) (in the 95th percentile corresponding to the highest exposure level, a confidence interval of 90%). As a result of analyzing sensitivity, 'source term to air' was identified as the most influential variable, followed by 'exposure time, active indoors (h/day)', and 'exposure duration (years)'. Conclusions: As for the results of the human cancer risk assessment for the selected region, the predicted human cancer risk was 5.19E-06 (95% CI; 4.07E-06-6.81E-06) (in the 95th percentile, corresponding to the highest exposure level, a confidence interval of 90%). As a result of analyzing sensitivity, 'source term to air' was found to be most influential.

입원 환자에서 STRATIFY의 예측 타당도 메타분석 (Predictive Validity of the STRATIFY for Fall Screening Assessment in Acute Hospital Setting: A meta-analysis)

  • 박성희;최윤경;황정해
    • 성인간호학회지
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    • 제27권5호
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    • pp.559-571
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    • 2015
  • Purpose: This study is to determine the predictive validity of the St. Thomas Risk Assessment Tool in Falling Elderly Inpatients (STRATIFY) for inpatients' fall risk. Methods: A literature search was performed to identify all studies published between 1946 and 2014 from periodicals indexed in Ovid Medline, Embase, CINAHL, KoreaMed, NDSL and other databases, using the following key words; 'fall', 'fall risk assessment', 'fall screening', 'mobility scale', and 'risk assessment tool'. The QUADAS-II was applied to assess the internal validity of the diagnostic studies. Fourteen studies were analyzed using meta-analysis with MetaDisc 1.4. Results: The predictive validity of STRATIFY was as follows; pooled sensitivity .75 (95% CI: 0.72~0.78), pooled specificity .69 (95% CI: 0.69~0.70) respectively. In addition, the pooled sensitivity in the study that targets only the over 65 years of age was .89 (95% CI: 0.85~0.93). Conclusion: The STRATIFY's predictive validity for fall risk is at a moderate level. Although there is a limit to interpret the results for heterogeneity between the literature, STRATIFY is an appropriate tool to apply to hospitalized patients of the elderly at a potential risk of accidental fall in a hospital.

The Effects of Personality Factors of the Prep Entrepreneurs in Food Service Industry on Entrepreneurial Intention: Focusing on the Risk Sensitivity

  • Park, Cheol-Woo;Bae, Gumkwang
    • 한국조리학회지
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    • 제23권6호
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    • pp.118-126
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    • 2017
  • The purposes of this study were to estimate the relationship between Big 5 personality factors of prep-entrepreneur and entrepreneurial intention, and to identify the moderating effects of risk sensitivity on the relationship. There is a total of 181 questionnaire surveys distributed and 152 data were used for analysis with erasing incomplete responses. The data analysis was conducted to utilize frequency analysis and regression analysis with SPSS WIN 22.0. The results of this study demonstrated that there are only 2 factors, neuroticism and extraversion, significantly influence on entrepreneurial intention, while conscientiousness, agreeableness and openness to experience do not have significant impacts on entrepreneurial intention. Furthermore, risk sensitivity effects on the relationship between Big-5 personality factor and entrepreneurial intention. This study may contribute to help prep-entrepreneur by using baseline data. Prep- entrepreneur could know their personality factor and confirm their consideration about entrepreneurial intention. Meanwhile, for the market-oriented implication, this study suggested that it is instrumental and significant for knowing prep-entrepreneur's personality factor and their entrepreneurial intention before starting foodservice business.