• Title/Summary/Keyword: Value test

Search Result 10,627, Processing Time 0.039 seconds

Study of SUVm Cut-off Value for the Distinction of Pancreatic Cancer In PET/CT Exam (PET/CT 검사에서 췌장암 판별을 위한 SUVm 경계값 연구)

  • Chang, Boseok;Kim, Jae Ho;Liu, Guoxu;Jang, Eun Sung
    • The Journal of the Korea Contents Association
    • /
    • v.17 no.10
    • /
    • pp.567-575
    • /
    • 2017
  • In this study, when diagnosis pancreatic cancer by dual time point PET/CT, we propose SUVm 2.52 as the threshold value for performing the dual time point PET/CT exam. The hypothesis of normal distribution was adopted through data conversion of 60 pancreatic diseases. The proposed SUVm2.52 boundary value showed a significance level that could be applied to both 120 and 180 minutes of delay time scan for pancreatic cancer determination (p<0.05). C-value variation shows that delay time 2 hour test is more useful than delay time 3 hour test. When the SUVm 2.52 is set to the boundary value and the double-time point PET/CT exam is performed, the probability of distinguishing cancer from inflammation in the delayed image is 95%. When the delayed test is performed with the proposed boundary value SUVm 2.52, Compared with general PET / CT scans, it is thought that it may be helpful to distinguish pancreatic cancer.

Determinants of Eco-friendly Outdoor Wear Products Purchase Intention : Exploring Value-Belief-Norm Theory (친환경 아웃도어 웨어 제품 구매의도 결정요인 : 가치-신념-규범 이론을 중심으로)

  • Kim, Young Hwa;Oh, Kyung Wha;Jung, Hye Jung
    • Fashion & Textile Research Journal
    • /
    • v.17 no.6
    • /
    • pp.965-977
    • /
    • 2015
  • This study aims to investigate determinants that included personal values, pro-environmental beliefs, and proenvironmental norms for enhancing consumers' purchase intention of eco-friendly outdoor wear exploring Stern(2000)’s the value-belief-norm theory. A survey was conducted with females and males between the ages of 20 and 60 who have experienced buying outdoor wear products. A total of 300 responses were analyzed by descriptive analysis, factor analysis, a reliability test, an independent samples t-test, and regression analysis. The results of this study were as follows: 1) The results of exploratory factor analysis and reliability test on the personal value clearly showed factorial structures including the social power, ecologic value, openness, equality, and altruistic value. 2) There are significant differences in personal value sub-dimensions, pro-environmental beliefs, pro-environmental norm, and purchase intention of eco-friendly outdoor wear products according to respondents' gender and age. 3) Personal values, but not social power, affect pro-environmental beliefs; in turn, pro-environmental beliefs affect pro-environmental norms, which then affects purchase intentions of eco-friendly outdoor wear. The findings support the conclusion that there is significant causality among personal value such as ecologic, openness, equality, and altruistic, pro-environmental belief, and pro-environmental norm. This study suggests pragmatic implications to understand outdoor wear consumers' socio-psychological and demographic factors and to augment purchase intentions of eco-friendly outdoor wear products.

The Effect of Corporate CSV Activities on Prosocial Consumer Behavior through Emotional Factors

  • Hong, Seong-Sil;Song, In-Am;Kim, Gyu-Bae
    • East Asian Journal of Business Economics (EAJBE)
    • /
    • v.5 no.3
    • /
    • pp.48-63
    • /
    • 2017
  • Purpose - The objective of this research is to investigate not only the effect of a company creating shared value (CSV) influencing consumers' emotions that lead to prosocial consumer behavior but also the moderating effect of Companies' authenticity in the causal relationship between economic or social value of CSV and either gratitude or pride of consumers. Research design, data, methodology - The 9 hypotheses presenting the relationship among CSV, consumer's emotion and prosocial consumer behavior were proposed and tested in this study. Research data were collected from the surveying of 350 respondents over 20 years and the 340 samples were used to test the proposed hypotheses. SPSS 20.0 and AMOS 20.0 were used for statistical analysis such as reliability test, validity test and path analysis. Results - The results show that the economic or social value of corporate CSV activities affects positively consumer's gratitude or pride except for the relationship between social value of CSV and consumer's pride. The results also show that gratitude or pride of consumers affects positively consumers' prosocial behavior. We also found that there is a moderating effect of Companies' authenticity in the causal relationship between economic or social value of CSV and either gratitude or pride of consumers. Conclusions - Company's activities in creating shared value influences consumer emotions and pride, and although these activities induce gratitude, this does not apply to pride. In addition, when these shared value activities influence consumer emotions, the authenticity of the company has shown to have a moderating effect.

A Study on Arc Conductance of Puffer Type SF6 GCB at Current Zero Period (전류영점 영역에서 파퍼식 SF6 가스차단기의 아크 컨덕턴스에 관한 연구)

  • Chong, Jin-Kyo;Song, Ki-Dong;Lee, Woo-Young;Kim, Gyu-Tak
    • The Transactions of The Korean Institute of Electrical Engineers
    • /
    • v.59 no.2
    • /
    • pp.328-332
    • /
    • 2010
  • The SLF(Short Line Fault) breaking capability test for high voltage class $SF_6$ GCB(Gas Circuit Breaker) was conducted. Simplified LC resonant circuit test facility was used for SLF breaking test. During test, Test current was measured by Rogwski coil and arc voltage was measured by voltage divider. Arc conductance was calculated by using these test results before 200ns at current zero. Critical arc conductance value at rated voltage 145kV class is about 2.3mS regardless of breaking current magnitude and arc conductance value at rated voltage 170kV class is about 2.6mS.

The Relationship Between Firm Value and Ownership of Family Firms: A Case Study in Indonesia

  • VENUSITA, Lintang;AGUSTIA, Dian
    • The Journal of Asian Finance, Economics and Business
    • /
    • v.8 no.4
    • /
    • pp.863-873
    • /
    • 2021
  • The purpose of this research is to examine the effect of family share ownership on the value of family companies and differences in the value of the firm - a family firm managed by family members and a family firm managed by non-family members. This research is also related to agency problems, namely share ownership and professional management can increase company value. This research uses the firm value as the dependent variable that is measured using Tobin's Q. Meanwhile the independent variable in this research is family ownership, and firm size is the control variable. The purposive sampling method was used to determine the sample for this research. The object of this research is 78 family companies listing on the Indonesian Stock Exchange in 2017. The hypothesis is tested by using multiple linear regression analysis which meets the analysis requirements test or classic assumption test. The results show that majority family ownership does not affect the value of the firm and there is no difference in the firm value of family firm led by family members and the firm value of family firm managed by non-family members.

The Study on Value and Demographic Characteristics of Missy Who are New Consumer Group -about Women Aged Twenties and Thirties- (새로운 소비자 집단으로서 미씨(Missy)의 가치관 및 인구통계학적 특성에 관한 연구 -20~30대 여성을 중심으로-)

  • 김선희;임숙자
    • The Research Journal of the Costume Culture
    • /
    • v.3 no.2
    • /
    • pp.371-391
    • /
    • 1995
  • This study is to infer consumer's value and demographics towards Missy, who are womens of new generation which represents new consumer group in fashion industry. The concrete purpose of the study is as follows : First : To find out the differences of value inference towards Missy depending on demographics of researched group. Second : To find out differences of value inference towards Missy depending on self-evaluation. Third : To find out differences of perception towards Missy's demographics between the groups of career women, housewives, students. Fouth : To find out differences of perception towards Missy's demographics depending on self-evaluation about Missy's of researched group. The researched group was 251 women aged between $20\sim30$ living in Seoul and sample have been selected from various profession. Method of the study was by using questionnares which were based on results of pretest and preceding research. Analysis of the study was achieved by using SPSS package which are frequency, percentage, $x^2$-test, t-test and Anova, Duncan-test and the results are as follows: First : There are significant differences of value inference towards Missy between the groups who are perceived themselves Missy by self evaluation and the groups who are not. Third : There are significant differences of perception towards Missy's demographics between the groups of career women, housewives, students. Fourth : There are significant differences of perception in regards to Missy's demographics between perceived themselves Missy and the others who are not.

  • PDF

A Study on Evaluating a Representative Smoke Value from an Inspection Vehicle Using Integration Method over a Cycle of Free-Acceleration Test Mode (무부하 급가속 측정 사이클로 운전되는 검사 대상 디젤 차량으로부터 배출되는 매연값 적분에 의한 차량 매연 대표값 특성 연구)

  • Lee, Choong Hoon
    • Journal of ILASS-Korea
    • /
    • v.18 no.3
    • /
    • pp.132-139
    • /
    • 2013
  • Smoke emissions from light duty diesel vehicles were measured using light extinction method with the free acceleration test mode. The smoke emissions for each measurement cycle of the free acceleration method showed large variations according to driver's pedal pushing pattern. The smoke values for each measurement cycle initially increased and reach a peak value. Integration of the smoke emissions with time for each measurement cycle was performed to get a representative smoke value which was obtained by averaging the integrated results. Two kinds of integration time range were used. One is range over the whole measurement cycle of the free acceleration method. The other is only the acceleration range in the measurement cycle. Overall, variation of the representative smoke values obtained by the integration method was reduced comparing to the traditional representative smoke value which was obtained from a peak smoke value over the measurement cycle. Ten vehicles of the same model with 2.5 liter diesel engines, and seven vehicles of the same model with 2.7 liter diesel engines, were tested using the free acceleration test method.

Relationship between Alcohol Use Disorders Identification Test Fractional Anisotropy Value of Diffusion Tensor Image in Brain White Matter Region (알코올 선별 검사법(Alcohol Use Disorders Identification Test)과 뇌 백질 영역의 확산텐서 비등방도 계측 값의 관련성)

  • Lee, Chi Hyung;Kim, Gyeong Rip;Kwak, Jong Hyeok
    • Journal of the Korean Society of Radiology
    • /
    • v.16 no.5
    • /
    • pp.575-583
    • /
    • 2022
  • Magnetic resonance diffusion tensor imaging (DTI) has revealed the disruption of brain white matter microstructure in normal aging and alcoholism undetectable with conventional structural MR imaging. we plan to analyze the FA measurements of the ROI of dangerous drinkers selected from Alcohol Use Disorders Identification Test (AUDIT) and Tract-Based Spatial Statics (TBSS) tool was used to extract FA values in the ROI from the image acquired through the pre-processing process. TBSS has a higher sensitivity of the FA value and MD value in the white matter than the brain gray matter, and has the advantage of quantitatively deriving the unlimited degree of brain nerve fibers, and more specialized in the brain white matter. We plan to analyze the fractional anisotropy (FA) measurement value for damage by selecting the center of the anatomical structure of the white matter region of the brain with high anisotropy among the brain neural networks that are particularly vulnerable to alcohol as the region of interest (ROI). In this study, we expected that alcohol causes damage to the brain white matter microstructure from FA value in various areas including both Choroid plexus. Especially, In the case of the moderate drunker, the mean value of FA in Lt, Rt. Choroid plexus was 0.2831 and 0.2872, whereas, in the case of the severe drunker, the mean value of FA was 0.1972 and 0.1936. We found that the higher the score on the AUDIT scale, the lower the FA value in ROI region of the brain white matter. Using the AUDIT scale, the guideline for the FA value of DTI can be presented, and it is possible to select a significant number of potentially severe drinkers. In other words, AUDIT was proved as useful tool in screening and discrimination of severe drunker through DTI.

The Relationship between Psychological and Environmental Factors and Value of Children of Mothers with Young Children (영유아기 자녀를 둔 어머니의 심리적 요인 및 환경적 요인과 자녀가치관 간의 관계)

  • Park, Su-Bin;Kim, Hee-Hwa
    • Journal of the Korean Home Economics Association
    • /
    • v.50 no.5
    • /
    • pp.79-89
    • /
    • 2012
  • The purpose of this study was to investigate differences in the value of children according to the demographic characteristics of mothers with young children. This was to examine the relationship between psychological and environmental factors, and the value of children to mothers with young children. The participants of this study were 237 mothers, who had young children. Descriptive statistics, t-test, F-test, and Pearson's correlation analysis were used for data analysis. The results were as follows: First, the value of children was different according to the child's factors (gender and number of children in the family, etc.), the mother's factors (age and education, etc), and the family's factors (household income and cost of bringing up the child). Second, familism is related to emotional value and instrumental value, parenting efficacy is related to emotional value and social value, children's temperament is related to emotional value, and the value of children from mother's reference group is related to emotional value and instrumental value, social value, and burdensome value. As for the implication of these findings, value of children from mother's reference groups is important for changing the value of children of the mothers with young children.

The Survey for Awareness of Radiation Dose of CT and General X-ray Examination (전산화단층촬영검사와 일반촬영검사의 방사선 선량에 대한 인식도 조사)

  • Joo, Young-Cheol;Lim, Cheong-Hwan;Jung, Hong-Ryang;You, In-Gyu;Cho, Han-Byul;Yang, Oh-Nam;Kim, Min-Cheol;Yoon, Joon
    • Journal of radiological science and technology
    • /
    • v.35 no.1
    • /
    • pp.35-44
    • /
    • 2012
  • The goal of this study is to awaken about risk occurred by CT examination. For radio-technologists working at 'S medical center' located in Seoul, we investigated a recognition about dose and risk CT and normal X-ray examination according by working experience in hospital, experience about CT examination and radiation source. For subjects of investigation, radio-technologists working at 'S medical center' located in Seoul helped us. We collected 131 questionnaires for a test of hypothesis. Cronbach @ coefficients of questionnaires were 0.825988 and 0.767161 and a rejection rate of p-value was below 0.05. SAS 9.1(SAS Institute Inc., Cary, NC, USA.) statistic package was used for hypothesis test. We used Mann-Whitney test, Kruskai-Wallis test, Two sample T-test, Two sample T-test with Bonferroni's Correction and One-way ANOVA methods. P-values of hypothesis about dose of CT and normal X-ray examination were 0.2291 ~ 0.9663. p-values of hypothesis about risk were 0.1924 ~ 1.0000. All of hypothesis is over rejection rate(<0.05). This study shows that radio-technologists of S medical center recognized that CT has higher dose and risk than general X-ray examination.