• Title/Summary/Keyword: sensitivity study

Search Result 9,207, Processing Time 0.035 seconds

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
    • Culinary science and hospitality research
    • /
    • v.23 no.6
    • /
    • pp.118-126
    • /
    • 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.

A Sensitivity Analysis for Risk Management of Commercial Buildings (상업건축물의 사업위험관리를 위한 민감도 분석 기법)

  • Kim, Sun-Kuk;Ryu, Sang-Yeon
    • Journal of the Korea Institute of Building Construction
    • /
    • v.9 no.1
    • /
    • pp.123-129
    • /
    • 2009
  • The global financial crisis resulting from sub-prime mortgage crisis in the United States, beginning in 2007, has had dealt a blow to domestic economy. The economic downturn, coupled with a large number of apartments remaining unsold has resulted in contracted investment sentiment of the builders. Thus it's difficult to even implement the business, unless the investment project is thoroughly verified as well as the accurate profitability is granted. Viewing the current situation, forecasting and evaluating the business profitability is more than important today. The study was planned to identify the factors influencing the business success and to evaluate the sensitivity, relative risk of each factor was measured, and the scope of the study was limited to the commercial buildings among other buildings except apartment buildings. Hence, the study was aimed to analyze the factors affecting the business and the sensitivity so as to be able to systematically materialize the risk management of the commercial buildings. The outcome of the study is expected to serve the useful data in analyzing the business profitability and implementing the investment projects as well.

The Study of Human Rights Sensitivity and the Types of Perception in regards to Human Rights for College Students (대학생의 인권감수성 수준과 인권인식 유형에 관한 연구)

  • Shim, Tae Een;Lee, Song Yi
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.19 no.10
    • /
    • pp.352-360
    • /
    • 2018
  • The purpose of this study was to examine the level of human rights sensitivity and the types of perception in regards to the human rights of college students to enhance their human rights sensitivity. The study methodology included a t-test and variance analysis for the level of human rights sensitivity, and a Q-factor analysis for the perception types of human rights. As a result of examining whether there is a difference in human right sensitivity, it was found that female students were higher than male students, and juniors and seniors were higher than freshmen and sophomores. The human rights sensitivity of the students in the social and science department were the highest, and those who had volunteer experiences were more susceptible to human rights than those who did not. Students who registered for organ donation were higher than those who did not, and those who received human rights education showed higher human rights susceptibility than those who did not. Four perception types of human rights were analyzed 'universal social moralists', those who have an idealistic mindset and make decisions based on moral standards, 'practical realists', those who have no intention of breaking out of the social norm and who do not want to take any risks for human rights, 'social system advocates', those who have a clear understanding of the basic human rights concept, but don't think that they should break the rules of society for the sake of individual rights, and 'social contracts advocates', those who are willing to bend the rules of society for human rights, but not to the extent of ruining relationships. These study results are expected to contribute to the possibility of the social viewpoint that human rights sensitivity can be developed in the context of social experience as well as perception.

A Study on Human Rights Sensitivity in Korean Occupational Therapist (국내 작업치료사의 인권감수성에 관한 연구)

  • Hong, Ki-Hoon
    • The Journal of Korean society of community based occupational therapy
    • /
    • v.8 no.3
    • /
    • pp.49-57
    • /
    • 2018
  • Objective : The purpose of this study was to investigate the level of human rights sensitivity of occupational therapist and to compare the difference of the human rights sensitivity according to their characteristics and to provide basic data for the development of human rights education programs for occupational therapists in the future and to emphasize their role as human rights advocates. Methods : The subjects for this study were occupational therapists who chosen by snowball sampling method. The questionnaire consisted of 5 episodes and 30 questions to measure the level of occupational therapist's human rights sensitivity and 7 questions for identifying general characteristics of subjects. We distributed the questionnaire by on-line. 165 copies were collected and used to final data analysis. Results : The average of occupational therapists' human rights sensitivity was $33.52{\pm}14.96$. According to the subcategories, the average of perception of situation was $20.44{\pm}2.32$, perception of result was $19.85{\pm}2.32$, and the perception of responsibility was $19.14{\pm}2.21$. Among 5 episodes, The highest score was the right to pursue one's happiness of the elderly($12.72{\pm}1.56$), and the lowest score was the right to personal freedom in disabled ($11.04{\pm}2.23$). There were significantly differences of the subjects' age, educational level, organization type, and the level of clinical experiences. Conclusion : Occupational therapists' human rights sensitivity increased with age and the level of clinical experiences. And the human rights sensitivity increased as they were exposed to various human rights related circumstances. The reason of the highest score for situational awareness was that empathy for the client-centered intervention is important. This study confirmed that it is necessary to have human rights education and various educational programs.

A Study on the Quantitative Analysis Method through the Absorbed Dose and the Histogram in the Performance Evaluation of the Detector according to the Sensitivity Change of Auto Exposure Control(AEC) in DR(Digital Radiography) (DR(Digital Radiography)에서 자동노출제어장치의 감도변화에 따른 검출기 성능평가 시 흡수선량과 히스토그램을 통한 정량적 분석방법에 관한 연구)

  • Hwang, Jun-Ho;Lee, Kyung-Bae
    • The Journal of the Korea Contents Association
    • /
    • v.18 no.1
    • /
    • pp.232-240
    • /
    • 2018
  • This study is to suggest a method to evaluate the detector performance using change of absorbed dose and histogram according to sensitivity change of Auto Exposure Control(AEC). The experiment site is skull, abdomen pelvis and the accuracy of the detector was evaluated by measuring the absorbed dose of the detector sensitivity S200, S400, S800, S1000. Also the dynamic range of the detector was evaluated through the histogram analysis. As a result, the absorbed dose decreased gradually as the sensitivity was set higher from S200 to S1000. And through the sensitivity histogram analysis, as the sensitivity of the skull is set higher, the amount of information at both ends of the histogram is lost. Abdomen and pelvis areas showed underflow phenomena in which the amount of information in the first part of the histogram was lost as the sensitivity was set higher. In conclusion, the detector accurately implemented the sensitivity change, but the dynamic range of the image due to the sensitivity change of the AEC due to the deterioration of the detector performance can not be realized properly and it was found that the evaluation through the absorbed dose and the histogram is useful when evaluating the performance of the detector.

Gamma Camera Design to Improve Spatial Resolution and Sensitivity (공간분해능 및 민감도 향상을 위한 새로운 감마카메라 설계)

  • Seung-Hun Kang;Seung-Jae Lee
    • Journal of the Korean Society of Radiology
    • /
    • v.17 no.2
    • /
    • pp.201-206
    • /
    • 2023
  • In order to improve the spatial resolution of the gamma camera, the size of the hole in the collimator must be reduced, so the sensitivity is reduced. In order to improve the sensitivity, the size of the hole must be increased, and thus the spatial resolution is reduced. In other words, spatial resolution and sensitivity show opposite characteristics. In this study, a gamma camera was designed to improve both spatial resolution and sensitivity. In order to obtain higher sensitivity in gamma cameras with the same spatial resolution, the structure of the scintillator was designed differently from the existing system. A scintillation pixel was used, and a partition wall was placed between the scintillation pixels to prevent incident gamma rays from being transmitted to other scintillation pixels to interact. Geant4 Application for Tomographic Emission (GATE) simulation was performed to evaluate the performance of the designed gamma camera. When the same sensitivity as the block-type scintillator was obtained, the spatial resolution increased by 16.5%, and when the same spatial resolution was obtained, the sensitivity increased by 61.5%. It is considered that the use of the gamma camera designed in this study can improve the sensitivity compared to the existing system while securing excellent spatial resolution.

Sensitivity Analysis of Engine Mount System using FRF-based Substructuring Method (전달함수합성법을 이용한 엔진마운트계의 민감도 해석)

  • Lee, Du-Ho;Hwang, U-Seok;Kim, Chan-Muk
    • Transactions of the Korean Society of Mechanical Engineers A
    • /
    • v.25 no.1
    • /
    • pp.153-160
    • /
    • 2001
  • A general procedure for the design sensitivity analysis of structural dynamic problems has been presented in frame of the FRF-based substructuring formulation. For a system response function, the proposed method gives a parametric design sensitivity formula in terms of the partial derivatives of the connection element properties and the transfer matrix of the subsystems. The derived design sensitivity formula is applied to an engine mount system. An interior noise problem in the passenger car is analyzed using the FRF-based substructuring method and the proposed formulation is adopted to study the response variations with respect to the dynamic characteristics of the engine mounts and the bushes. To obtain the FRFs, a finite element model is built for the engine mount structures, and test data is used for the trimmed body including cabin cavity. The comparison of sensitivities derived by the proposed method and the finite difference method shows that the proposed method is efficient and accurate. The proposed sensitivity analysis method indicates effectively the most sensitive location to the interior noise among the engine mounts and the bushes.

Shape Design Sensitivity Analysis of Supercavitating Flow Problem (초공동(超空洞) 유동 문제의 형상 설계민감도 해석)

  • Choi, Joo-Ho;Kwak, Hyun-Gu;Grandhi, R.V.
    • Transactions of the Korean Society of Mechanical Engineers A
    • /
    • v.28 no.9
    • /
    • pp.1320-1327
    • /
    • 2004
  • An efficient boundary-based technique is developed for addressing shape design sensitivity analysis in supercavitating flow problem. An analytical sensitivity formula in the form of a boundary integral is derived based on the continuum formulation for a general functional defined in potential flow problems. The formula, which is expressed in terms of the boundary solutions and shape variation vectors, can be conveniently used for gradient computation in a variety of shape design in potential flow problems. While the sensitivity can be calculated independent of the analysis means, such as the finite element method (FEM) or the boundary element method (BEM), the FEM is used for the analysis in this study because of its popularity and easy-to-use features. The advantage of using a boundary-based method is that the shape variation vectors are needed only on the boundary, not over the whole domain. The boundary shape variation vectors are conveniently computed by using finite perturbations of the shape geometry instead of complex analytical differentiation of the geometry functions. The supercavitating flow problem is chosen to illustrate the efficiency of the proposed methodology. Implementation issues for the sensitivity analysis and optimization procedure are also addressed in this flow problem.

Cultural Knowledge, Empathy and Cultural Sensitivity of University Students Majoring in Health And Welfare (보건의료 및 복지 전공 대학생의 다문화 지식, 공감, 문화적 민감성에 관한 연구)

  • Oh, Won-Oak;Jung, Woo-Sik;Kang, Hyung-Gon;Kim, Eun-Hye;Suk, Min-Hyun
    • Journal of the Korean Society of School Health
    • /
    • v.23 no.2
    • /
    • pp.192-199
    • /
    • 2010
  • Purpose: Multi-cultural families are increasing highly in Korea. Health care professionals and students majoring in health and welfare need to develop their cultural competence for quality of life from multi-cultural families. This study was to be conducted by examining the level of culture knowledge, empathy, and cultural sensitivity of university students majoring in health and welfare. Methods: Convenience sampling method was used and 408 students from 3 universities were evaluated for final analysis. Data collection was conducted through the use of questionnaires. Results: The score of cultural knowledge of students was very low. Empathy and cultural sensitivity showed middle range. There was a significant correlation between cultural knowledge and empathy, empathy and cultural sensitivity. However, there was no significant correlations between cultural knowledge and cultural sensitivity. Conclusion: An understanding of multi-cultural enables health and welfare providers to specialize service in cross- cultural situations of multi-cultural families in Korea. Ways to improve cultural competence for students majoring in health care and welfare is needed.

Computer Simulation for Effects of Scintillator and Parallel Hole Collimator on Gamma Probe Imaging (섬광체와 평행구멍조준기가 감마프로브 영상에 미치는 영향에 관한 컴퓨터 시뮬레이션)

  • Bong, Jeong-Gyun;Kim, Hui-Jung;Lee, Jong-Du;Gwon, Su-Il
    • Journal of Biomedical Engineering Research
    • /
    • v.19 no.6
    • /
    • pp.563-570
    • /
    • 1998
  • The purpose of this study was to investigate the effects of scintillator and collimator parameters that tradeoff between system sensitivity and spatial resolution. The parameters simulated using Monte Carlo program were scintillator thickness, colimator hole shape, septal thickness, and hole length. The results show that the sensitivity increases exponentially upto about 1 cm of scintillator thickness as the thickness increases. However the sensitivity is almost constant when the scintiallator is thicker than about 1 cm. The simulation of collimator hole shape shows that the hexagonal hole gives the best spatial resolution for the same system sensitivity. The system statical resolution is improved, as both collimator septal thickness and hole length increase, however that system sensitivity is rapidly decreased. In conclusion, The optimization of scintillator and collimator parameters using monte carlo simulation may be useful to develop a high-resolution miniature gamma probe.

  • PDF