• The Journal of Asian Finance, Economics and Business
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• v.1 no.3
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• pp.5-16
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• 2014

This study aims to examine the dynamics of price changes and trading volume of Kuala Lumpur Options and Financial Futures Exchange (KLOFFE) from 2000 to 2008. With augmented analysis, our results support two hypotheses. First, under information spillover, our findings support noise traders' hypothesis as the time span for variance of past trading volume to cause variance of current return is found to be asymmetric under bull and bear markets. Second, looking at the dynamic relation between volume and volatility of price changes, our findings support Liquidity-Driven Trade hypothesis as past trading volume and subsequent volatility of return exhibit positive correlation. In terms of investors' behavior in response to the news, we find that investors are more risk taking in bull market and more risk reverse in bear market. Our study suggests that investors should adjust their strategy in the futures market in a dynamic manner as the time span of new information arrival is not consistent. Also, uninformed investors with information asymmetry should expect noninformational trading from informed investors to establish their desired positions for better liquid position.

• Annals of Clinical Neurophysiology
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• v.14 no.1
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• pp.1-6
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• 2012

Low back pain is a common clinical condition with heterogeneous causes and challenges to manage. High prevalence and numerous assessments result in an enormous socioeconomic burden. Clinician must conduct efficient and stepwise evaluation process to rule out serious spinal pathology, neurologic involvement, and identify risk factors for chronicity. The process can be achieved through the focused history taking and physical examination. Certain factors related to serious spinal pathology include age (>50 years), trauma, unexplained fever, recent urinary or skin infection, unrelenting night or rest pain, unexplained weight loss, osteoporosis, immunosuppression, steroid use, and widespread neurological symptoms. In non-specific low back pain, diagnostic imaging and laboratory studies are often unnecessary and can disturb an appropriate management. For the management of acute low back pain, patient education and medication such as acetaminophen, non-steroidal anti-inflammatory drugs, and muscle relaxants are recommended. For chronic low back pain, behavior therapy, back exercise, and spinal manipulation are beneficial. The evidence based approach could improve success rate of management, result in prevention of acute low back pain from being chronic intractable pain.

• Physical Therapy Korea
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• v.10 no.1
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• pp.97-108
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• 2003

Slipping during various kinds of movement often leads to potentially dangerous incidents of falling. The purpose of this paper was to review some of the research performed in the field including such topics as rating scales for balance, kinematics and kinetics of slipping, adaptation to slippery conditions, postural and balance control, and protective movement during falling. Controlling slipping and fall injuries requires a multifaceted approach. Environmental conditions (state of floor surface, tidiness, lighting, etc), work task (walking, carrying, pushing, lifting, etc), and human behavior (anticipation of hazards, adaptation to risks, risk taking, etc) must be accounted for in the assessment of slip and fall-related risks. Future directions of research must deal with modeling of basic tribophysical, biomechanical, and postural control process involved in slipping and falling.

• Journal of Korea Society of Digital Industry and Information Management
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• v.14 no.2
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• pp.19-25
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• 2018

With the development of IT technology, various services such as artificial intelligence and autonomous vehicles are being introduced, and many changes are taking place in our lives. However, if secure security is not provided, it will cause many risks, so the information security becomes more important. In this paper, we analyzed the research trends of main themes of information security over time. In order to conduct the research, 'Information Security' was searched in the Web of Science database. Using the abstracts of theses published from 1991 to 2016, we derived main research topics through topic modeling and time series regression analysis. The topic modeling results showed that the research topics were Information technology, system access, attack, threat, risk management, network type, security management, security awareness, certification level, information protection organization, security policy, access control, personal information, security investment, computing environment, investment cost, system structure, authentication method, user behavior, encryption. The time series regression results indicated that all the topics were hot topics.

• Korean Journal of Health Education and Promotion
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• v.22 no.3
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• pp.49-63
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• 2005

Objectives: The study was designed to assess the trends of the incidence of HIV among young people and their sexual risk-taking behaviors by gender in Korean college students. Methods: The cross-sectional study was used from college students from selected 60 among 208 4-year colleges and universities in 9 provinces and Seoul. A self-reported anonymous questionnaire administered and completed to a national representative sample of 4-year college students from May 15th to June 14th in 2003. We analyzed 2,385 cases. The overall response rate was 82.0%. Results: After controlling age effects, male students were more likely to be sexually experienced than female students(40.0% vs. 8.1%), OR=5.5, p<.000. The proportions of 19 years and before reported for initiation of sexual intercourse were 18.6% for males and 3.2% for females. Males reported significantly younger ages than females at initiation of sexual intercourse(p<.01). Only 14.8% of current sexually active subjects reported consistent use of contraceptive methods. After controlling age effects, male students reported a higher proportion of sexually experienced respondents with one or more casual partners(excluding a formal partner) during the last 12 months than women(38.8% vs. 22.2%), OR=2.2, p<. 05. Conclusion : This study can conclude that although males students initiate sex earlier and have higher percentage of sexual experience, the percentage of sexually experience female students has risen rapidly compared to the past. This data revealed a number of young people were at risk for HIV infection. Both genders are equally likely to have engaged in inconsistent condom use even though when they have a sex with an unknown partner. These findings suggest that practical sex education focused on using condom use should have been included in the school curricular. Educational and community interventions need to prevent sex-related problems.

• Journal of Korean Biological Nursing Science
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• v.15 no.1
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• pp.8-14
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• 2013

Purpose: The purpose of this study was to investigate factors related to obesity of mid-age women and to examine the relationship between obesity and chronic diseases including diabetes, hypertension, and heart disease. Methods: Using data from Korean American adults living in California, we analyzed the health behavior (diet, exercise, smoking, and binge drinking) and psychological stress of obese women with body mass index ${\geq}25$ by using chi-square test. Logistic regression was used to investigate independent effects of obesity on chronic diseases, after controlling for risk factors. Results: The prevalence of obesity appeared about 16.9%. The Obese group was less likely than the non-obese group to eat vegetables and more likely feel psychological stress. There were no significant differences in smoking, alcohol intake, and physical exercise between the two groups. Obesity was strongly related to chronic diseases (OR=4.642, 95% CI=1.328-16.222). Conclusion: This study suggests that obesity of mid-age women could be reduced by encouraging health behavior such as eating vegetables daily, performing physical exercise regularly, and taking care of emotional stress. Diet and physical activity interventions and emotional supports should be developed for weight loss and prevention of weight gain in mid-age women.

• The Journal of the Korea Contents Association
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• v.19 no.3
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• pp.635-648
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• 2019

Many studies of entrepreneurship have focused on positive characteristics such as self-efficacy and self-leadership. However, recent studies are being conducted to find out effects of negative characteristics on entrepreneurship, such as ADHD-like behavior. This study investigated the impact of ADHD-like behavior on Entrepreneurial Orientation(EO) and Entrepreneurial Intention(EI). In addition, this study investigated the impact of schema related to opportunity recognition and entrepreneurial alertness on EO and EI. Data were collected from youth generation in Korea through online survey. The results show that the ADHD isn't significant for both risk-taking and innovativeness, but it has negative impact on pro-activeness. On the other hand, Schema has positive impact on all EO and EO has positive impact on EI. As a results, The higher ADHD-like behavior, the lower pro-activeness. Therefore ADHD-like behavior could lower EI through pro-activeness. However, Schema has positive impact on all EO, which has positive impact on EI.

• International Journal of Highway Engineering
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• v.19 no.4
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• pp.69-78
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• 2017

PURPOSES : In this study, we analyzed the road crossing behavior of older pedestrians on a mid-block signalized crosswalk, and compared it to that of younger pedestrians. In addition, we analyzed the correlation between accidents involving older pedestrians while crossing roads and their behavioral characteristics. Finally, we confirmed the reasons for an increase in accidents involving older pedestrians. METHODS : First, 30 areas with the highest incidence of accidents involving older pedestrians while crossing roads were selected as target areas for analysis. Next, we measured the start-up delay (the time elapsed from the moment the signal turns green to the moment the pedestrian starts walking) and head movement (the number of head turns during crossing a road) of 900 (450 older and 450 younger) pedestrians. The next step was to conduct a survey and confirm the differences in judgment between older and younger pedestrians about approaching vehicles. Finally, we analyzed the correlation between the survey results and traffic accidents. RESULTS : The average start-up delay and head movement of the older pedestrians was 1.58 seconds and 3.15 times, respectively. A definite correlation was obtained between head movement and the frequency of pedestrian traffic accidents. The results of our survey indicate that 17.3% of the older pedestrians and 7.8% of the younger pedestrians have a high crash risk. CONCLUSIONS : Behavioral characteristics of older pedestrians were closely correlated with accidents involving older pedestrians while crossing roads in mid-block signalized crosswalks. Our study indicates that in order to reduce the number of accidents involving older pedestrians, it is necessary to develop an improvement plan including measures such as installation of safety facilities taking the behavioral characteristics of older pedestrians into consideration and their safety education.

• Journal of Digital Convergence
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• v.15 no.6
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• pp.297-304
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• 2017

The purpose of this study was to investigate the association between antioxidant food intake pattern and asthma control status in Korean adolescents. This study was conducted using data from 1,578 patients diagnosed with asthma among the participants in the 11th online health behavior survey. Statistical analyses were performed for sociodemographic variables, known risk factors for asthma worsening, and all variables which were related to food intake pattern. For final decision, logistic regression analysis was used to estimate the associations between antioxidant food intake and asthma worsening. Male gender and smoking experiences were associated with asthma exacerbation. Low intake of antioxidant foods status also significantly increased asthma exacerbations. Antioxidant food intake and smoking prevention education is important for adolescent asthma patients. It is highly needed to recommend taking fruits and vegetables properly.

• Journal of Korean Public Health Nursing
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• v.17 no.1
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• pp.47-57
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• 2003

The purpose of this study was to investigate health status and health promoting behaviors of female elderly, and their needs for health-related services in an urban-rural combined city. The data were collected from the subjects registered in senior welfare center and senior citizens' clubs. A total of 119 women were participated in the survey. The results of the study are as follows; 1. The subjects perceived their health status relatively unhealthy. Their health promotion behavior score was 10.82 (range 0-17), and more than $60\%$ of them performed well in smoking and drinking control, regular meal. taking breakfast, and maintaining good relationship with others. 2. The most needed service was health screening followed by health risk assessment, disease diagnosis and treatment. 3. The most demanded education was on dementia prevention, followed by exercise, balanced diet, and maintenance of memorial and mental capability. 4. As the health interest and the health responsibility increased, the need for health service increased as well. Likewise, the health education needs increased as the health interest, health responsibility, and health promotion behavior increased. The results show that the health promotion programs for female elderly need to be focused, primarily, on health screening, health risk assessment, medical services for disease diagnosis and treatment, and health consulting and education. And health consulting and education programs should be designed to promote health interest and health responsibility of female elderly, change positively their attitude to aging, and include education on dementia prevention, exercise and nutrition management. Recommendations are discussed.