• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.18 no.5
• /
• pp.185-196
• /
• 2023

This paper investigates the effects of entrepreneurs' cognitive biases on business opportunity evaluation, given their strong entrepreneurial spirit, which is characterized by innovation, proactivity, and risk-taking. When making decisions related to business activities, entrepreneurs typically make rational judgments based on their knowledge, experience, and the advice of external experts. However, in situations of extreme stress or when quick decisions are required, they often rely on heuristics based on their cognitive biases. In particular, we often see cases where entrepreneurs fail because they make decisions based on heuristics in the process of evaluating and selecting new business opportunities that are planned to guarantee the growth and sustainability of their companies. This study was conducted in response to the need for research to clarify the effects of entrepreneurs' cognitive biases on new business opportunity evaluation, given that the cognitive biases of entrepreneurs, which are formed by repeated successful experiences, can sometimes lead to business failure. Although there have been many studies on the effects of cognitive biases on entrepreneurship and opportunity evaluation among university students and general people who aspire to start a business, there have been few studies that have clarified the relationship between cognitive biases and social networks among entrepreneurs. In contrast to previous studies, this study conducted empirical surveys of entrepreneurs only, and also conducted research on the relationship with social networks. For the study, a survey was conducted using a parallel survey method using online mobile surveys and self-report questionnaires from 150 entrepreneurs of small and medium-sized enterprises. The results of the study showed that 'overconfidence' and 'illusion of control', among the independent variables of entrepreneurs' cognitive biases, had a statistically significant positive(+) effect on business opportunity evaluation. In addition, it was confirmed that the moderating variable, social network, moderates the effect of overconfidence on business opportunity evaluation. This study showed that entrepreneurs' cognitive biases play a role in the process of evaluating and selecting new business opportunities, and that social networks play a role in moderating the structural relationship between entrepreneurs' cognitive biases and business opportunity evaluation. This study is expected to be of great help not only to entrepreneurs, but also to entrepreneur education and policy making, by showing how entrepreneurs can use cognitive biases in a positive way and the influence of social networks.

• Journal of dental hygiene science
• /
• v.13 no.2
• /
• pp.182-190
• /
• 2013

Composition of oral microbial flora is suggested to play a role in the maintenance of oral health. Among them, Streptococcus mutans plays an essential role in the formation of dental plaque and it is being noticed as incipient infective bacteria of dental caries. The purpose of this study was to prepare the basic data about distribution of Streptococcus mutans detected from saliva by measuring colony density. It is well known that smoking as well as drinking is a factor of dental caries, however there are few investigations about distribution of Streptococcus mutans either smoking or drinking. The materials of this study were collected from students of dentistry college with general characteristics obtained by self-administered questionnaires. Students were asked to gently chew the paraffin to get saliva for 1 minute. Bacitracin disc in the culture medium was activated for 15 minutes, and then sample was incubated in the activated medium at $37^{\circ}C$ incubator for 48 hours. Streptococcus mutans colonization per 1 ml saliva was measured by the number of criteria. The severe levels of dental caries activity were significantly increased in the case of smoking (from 5.6% to 10%) or drinking (form 0% to 7%), respectively. Also, dental caries activity increased according to smoking and drinking periods longer. However, using the SPSS analytical process (Mann-Whitney's U), no significant differences were observed between the smoking and the non-smoking or the drinking and non-drinking, respectively. These results obtained from dental caries activity of saliva suggest that distribution of Streptococcus mutans following smoking or drinking can be used as a significant information for oral health.

• Korean Journal of Psychosomatic Medicine
• /
• v.22 no.2
• /
• pp.93-103
• /
• 2014

Objectives : The aim of study was to examine the prevalence of night eating syndrome(NES) and its correlates in schizophrenic outpatients. Methods : The 14 items of self-reported night eating questionnaire(NEQ) was administered to 201 schizophrenic patients in psychiatric outpatient clinic. We examined demographic and clinical characteristics, body mass index(BMI), subjective measures of mood, sleep, binge eating, and weight-related quality of life using Beck's Depression Inventory(BDI), Pittsburgh Sleep Quality Index(PSQI), Binge Eating Scale(BES) and Korean version of Obesity-Related Quality of Life Scale(KOQoL), respectively. Results : The prevalence of night eaters in schizophrenic outpatients was 10.4%(21 of 201). Comparisons between NES group and non-NES group revealed no significant differences in sociodemographic characteristics, clinical status and BMI. Compared to non-NES, patients with NES reported significantly greater depressed mood and sleep disturbance, more binge eating pattern, and decreased weight-related quality of life. While 'morning anorexia' and 'delayed morning meal'(2 of 5 NES core components in NEQ) were not differed between groups, 'nocturnal ingestions', 'evening hyperphagia', and 'mood/sleep' were more impaired in NES group. Conclusions : These findings are the first to describe the prevalence and its correlates of night eaters in schizophrenic outpatients. These results suggest that NES has negative mental health implications, although it was not associated with obesity. Further study to generalize these results is required.

• Korean Journal of Psychosomatic Medicine
• /
• v.26 no.1
• /
• pp.9-18
• /
• 2018

Objectives : The aims of this study were to investigate the psychopathology in adolescents with internalizing disorder using the self-report version of Strengths and Difficulties Questionnaire (SDQ-SR) and the Minnesota Multiphasic Personality Inventory for adolescents (MMPI-A), and to explore the complementarity between these two inventories for diagnostic assessment. Methods : Ninety-one patients aged 13-17 were divided into two groups by clinical diagnosis, 44 with internalizing disorder and 47 comparison group with other disorders. The data of SDQ-SR and MMPI-A completed by them were analyzed for the ability to predict internalizing disorder. Results : The logistic regression analysis revealed that diagnostic predictability increased by 2.27 times with every 1 point of SDQ-SR emotional symptom score increment. Comparison of ROC curves for internalizing disorders showed that the SE and SP of SDQ-SR emotional symptom with score over 4 was 88.94 and 78.72, respectively. For A-anx of MMPI-A with score over 56, SE and SP was 77.27 and 74.47, respectively. However, combination of these scales could not enhance the predictability of diagnostic classification more than that of SDQ-SR emotional symptom alone. Conclusions : Emotional symptom scale of SDQ-SR and A-anx, A-aln, A and INTR of MMPI-A should be important subscales for diagnosing the internalizing disorder of adolescents, however, which needs to be examined further with a larger sample size including normal control group.

• Proceedings of the KAIS Fall Conference
• /
• 2009.12a
• /
• pp.474-478
• /
• 2009

본 연구는 2008년 맞춤형 방문건강관리사업에 사용되고 있는 관절통증을 중심으로 한 사례관리를 수정 보안하여 우리나라 실정에 맞는 관절통증 사례관리 프로그램을 개발, 제안하며, 맞춤형 방문건강 관리사업의 활성화와 완성도를 높이는데 있다. 연구방법으로는 2007년 전국 12주 관절통증 사례관리 결과자료 분석하고, 전국 253개 보건소의 맞춤형 방문건강관리사업 인력에 대한 자료 분석과 전국 보건소 전문가 자문회의와 토론 결과를 통해 설문지를 수정 보완하여 2008년도 충청남도 관절통증 12주 사례관리를 실시하였다. 자료분석은 SPSS 12.0 통계 프로그램을 이용하여, p-value가 0.05 미만과 0.01미만인 경우를 통계적으로 유의한 것으로 판정하였으며, 전국자료는 빈도분석, wilcoxon 부호순위 검정과 McNemar's 검정을 실시하였으며, 12주의 관절통증 사례관리의 연구기간동안 수집된 자료를 1주와 8주간, 1주와 12주간, 8주와 12주간을 paired t-test 검정과 McNemar's 검정을 실시하여 유의성 평가를 실시하였다. 연구결과는 다음과 같다. 12주 기간 동안 사전 사례관리 방문간호사의 교육을 통한 사례관리 서비스의 강도의 조절 및 매주로 서비스의 횟수를 조절하여 사례관리를 실시한 결과 총 109개 항목에서 1주와 8주간에 유의한 항목은 TG(mg/dl)를 비롯한 51개 항목, 1주와 12주간에는 콜레스테롤(mg/dl)을 비롯한 53개 항목, 8주와 12주간에는 지난 48시간동안 관절통증 점수를 비롯한 3개 항목으로 유의한 차이를 볼 수 있었으며, 1주와 8주간은 유의하나 1주와 12주간은 유의하지 않게 나타나는 항목은 TG(mg/dl)를 비롯한 3개 항목, 1주와 8주간은 유의하지 않다가 1주와 12주간은 유의하게 나타나는 항목은 콜레스테롤(mg/dl)를 비롯한 6개 항목, 1주, 8주, 12주간의 모든 기간에서 유의한 항목은 지난 48 시간동안 관절통증 점수를 비롯한 3개 항목으로 조사되었다. 결론적으로 현재 우리나라에서 추진되고 있는 맞춤형 방문건강관리 사업의 사업지침에 대한 보완을 위해 관절통증사례관리 프로그램에 있어 중재 서비스 또는 프로그램의 기간은 12주간에서 8주간으로 조정 되어야 하며, 추가가 필요한 항목으로는 교육, 자기역량 강화, 운동처방, 물리치료, 약물치료, 대체요법, 식이, 영양, 생활지도 등이며, 어골도 분석을 위한 기본 틀 및 주요 구성요소를 제시 및 기여 요인 및 결정요인을 위한 논리적 모형 제시가 필요하며, 개선목표를 위한 유지증진 및 관리능력, 지기 관리 수행도 개선과 대상자별 맞춤형 사례관리를 위한 표준화된 행동 체크리스트 제작 보급 및 사례별 운동, 물리치료 지도 방법 계획 수립에 대한 인력 충원이 필요하다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.7
• /
• pp.3037-3047
• /
• 2012

This study is the investigation research to look into rest, computer work environment and muscle and bone symptom of high school students in some area. With high school students in K area as the object the questionnaires of self-writing type were distributed and the final 685 copies were collected and material analysis was carried out. In the differences between work posture and environment evaluation score following whether or not of pain existing of the each part of pain, the score of the persons who do not have pain was significantly higher than the score of the persons who have pain. The negative correlation between the part of pain and work environment was in desk(shoulder), chair(neck, shoulder, back, and ankle/foot), monitor(shoulder, back) keyboard (neck, shoulder, and ankle/foot) appeared as the result. Controling monitor and chair environment is help to alleviate neck pain and ankle/foot pain respectively. Therefore, computer work environment and bone and muscle symptom have relations and as the use of computer increases, prevention program which can relieve muscle and bone symptom by improving computer work environment is necessary.

• The Journal of the Korea Contents Association
• /
• v.17 no.12
• /
• pp.569-581
• /
• 2017

The purposes of this study were to investigate knowledge, attitude, subjective norms, perceived behavior control, behavioral intention, and compliance of standard precautions (SPs) in healthcare-associated infection (HAI) control among nursing students and to identify influencing factors for SPs compliance in HAI control. A descriptive correlation study was conducted. Participants were 223 nursing students recruited from three universities in a metropolitan city. Data were collected by self-administered questionnaires. On average, 87.0% of the knowledge questions were answered correctly. The mean SPs compliance score was 4.30 out of 5. There was no significant correlation between SPs knowledge and compliance. There were statistically significant correlation between SPs compliance and attitude, subjective norms, perceived behavior control and behavior intention. Perceived behavior control and behavior intention were significant predictors for SPs compliance among nursing students and these two variables explained 21.9% variance of SPs compliance among nursing students. Although, nursing students' SPs knowledge and compliance were acceptable level, their perceived behavior control was relatively low. SPs compliance among nursing students can be enhanced by increasing their behavior intention and perceived behavioral control. Education program for SPs in HAI control for nursing students which is designed with appropriated educational strategies is need to be developed and evaluated to enhance their capacity to deal effective and safe clinical practice.

• Journal of Internet Computing and Services
• /
• v.10 no.1
• /
• pp.145-158
• /
• 2009

No other change in Kora has offered gredter chalenges and opportunities than the emergence of the Internet and its related Information Technology. In the technology for accessing the ever growing wave of information. The quality of the silver generation is increasingly difficult to achieve because of the complexities of life in today's ICT(Information & Comunication Technology) dependent society, Life is more interesting when one knows what is going on, what opportunities exist, and when alternatives to current practices can be discovered and utilized with ease. The purpose of this study is to identify the determinants of attitude and planned behavior toward using internent for the quality of life. This study employ the intention to use internet, perceived ease of use, perceived usefuiness, self-efficacy, stress factor, generation gap, and income as major research variables, and collected 288 survey responses from senior citizen over 55. The results indicate that the perceived usefuiness and ease of use influence the intention to use internet, and that the self-efficacy, the ease of use and generation gap has some impact on the attitude, but the stree factor and the income level do not appear significant to the attitude. It was also found that the self-efficacy and the income level determine the level of ease of use. In addition, some useful suggestions concerning the continuing education program for silver generations are presented.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.10
• /
• pp.6193-6203
• /
• 2014

This study was conducted to determine the quality of sleep, and its association with the sociodemographic characteristics, health-related characteristics, and job-related characteristics among male workers in small-scale manufacturing industries with fewer than 50 members. A self-administered questionnaire was distributed to 856 male workers from April $1^{st}$ to June $30^{th}$, 2011. The survey items included the variables of sociodemographic, health-related, job-related, and quality of sleep. As a result, the quality of sleep according to the PSQI of the study subjects revealed 32.0% to be good and 68.0% to be poor. The quality of sleep assessed by hierarchical multiple regression analysis was significantly lower in the married group, those with lower BMI, and those with a lower level of subjective health status, non-smoking, alcohol drinking, without regular exercise, coffee drinking, blue color, had a longer of working hours, subjective health status, had a visiting out-patient department, and had a history of hospitalization. With the above model, the job characteristics had 13.1% explanatory power. This suggests that the quality of sleep (PSQI) has more power when combined with the job characteristics.

• Sleep Medicine and Psychophysiology
• /
• v.12 no.1
• /
• pp.50-57
• /
• 2005

Objectives: This study was designed to evaluate the differences in clinical characteristics and severity of symptoms between panic patients with and without comorbid major depressive disorder, and to ascertain the differences in the function of the autonomic nerve system measured by heart rate variability (HRV). Methods: The subjects were 60 patients who have panic disorder without major depressive disorder and 19 patients who met DSMIV criteria for both panic disorder and major depressive disorder. First, they drew up symptom checklists and self-rating scales, and were measured by Anxiety Disorder Inventory Schedule-Panic Attack & Agoraphobia (ADIS-P&A), Clinical Global Impression (CGI), Hamilton Rating Scale for Depression (HAM-D), Panic Disorder Severity Scale (PDSS) and Heart Rate Variability (HRV). For statistical analysis, we performed t-test to compare the scores of self reported scales and clinician’s rating scales in panic patients with comorbid major depressive disorder and those without major depressive disorder. ANCOVA was used to compare the variables of HRV, considering age as a covariate. Results: The subjective severities of depression and anxiety that comorbid patients complained of were higher than those of patients with only panic disorder. Futhermore, comorbid patients were more sensitive to anxiety and physical sensations, and they tend to be more negative in their thinking. The scores of clinician-rating scales such as CGI and PDSS were also higher in the comorbid patients. However, there were no significant differences in HRV variables between both groups, despite a tendency to low heart rate variability in the comorbid group. Conclusion: This study suggests that patients with panic disorder and comorbid major depressive disorder tend to complain of more symptoms and to be more sensitive to various symptoms than those with panic disorder without comorbid depression. However, in this study comorbid major depressive disorder did not have a significant impact on the HRV variables of patients with panic disorder.