• Journal of Intelligence and Information Systems
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• v.25 no.4
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• pp.67-88
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• 2019

Webtoon is a Korean-style digital comics platform that distributes comics content produced using the characteristic elements of the Internet in a form that can be consumed online. With the recent rapid growth of the webtoon industry and the exponential increase in the supply of webtoon content, the need for effective webtoon content recommendation measures is growing. Webtoons are digital content products that combine pictorial, literary and digital elements. Therefore, webtoons stimulate consumer sentiment by making readers have fun and engaging and empathizing with the situations in which webtoons are produced. In this context, it can be expected that the sentiment that webtoons evoke to consumers will serve as an important criterion for consumers' choice of webtoons. However, there is a lack of research to improve webtoons' recommendation performance by utilizing consumer sentiment. This study is aimed at developing consumer sentiment pattern maps that can support effective recommendations of webtoon content, focusing on consumer sentiments that have not been fully discussed previously. Metadata and consumer sentiments data were collected for 200 works serviced on the Korean webtoon platform 'Naver Webtoon' to conduct this study. 488 sentiment terms were collected for 127 works, excluding those that did not meet the purpose of the analysis. Next, similar or duplicate terms were combined or abstracted in accordance with the bottom-up approach. As a result, we have built webtoons specialized sentiment-index, which are reduced to a total of 63 emotive adjectives. By performing exploratory factor analysis on the constructed sentiment-index, we have derived three important dimensions for classifying webtoon types. The exploratory factor analysis was performed through the Principal Component Analysis (PCA) using varimax factor rotation. The three dimensions were named 'Immersion', 'Touch' and 'Irritant' respectively. Based on this, K-Means clustering was performed and the entire webtoons were classified into four types. Each type was named 'Snack', 'Drama', 'Irritant', and 'Romance'. For each type of webtoon, we wrote webtoon-sentiment 2-Mode network graphs and looked at the characteristics of the sentiment pattern appearing for each type. In addition, through profiling analysis, we were able to derive meaningful strategic implications for each type of webtoon. First, The 'Snack' cluster is a collection of webtoons that are fast-paced and highly entertaining. Many consumers are interested in these webtoons, but they don't rate them well. Also, consumers mostly use simple expressions of sentiment when talking about these webtoons. Webtoons belonging to 'Snack' are expected to appeal to modern people who want to consume content easily and quickly during short travel time, such as commuting time. Secondly, webtoons belonging to 'Drama' are expected to evoke realistic and everyday sentiments rather than exaggerated and light comic ones. When consumers talk about webtoons belonging to a 'Drama' cluster in online, they are found to express a variety of sentiments. It is appropriate to establish an OSMU(One source multi-use) strategy to extend these webtoons to other content such as movies and TV series. Third, the sentiment pattern map of 'Irritant' shows the sentiments that discourage customer interest by stimulating discomfort. Webtoons that evoke these sentiments are hard to get public attention. Artists should pay attention to these sentiments that cause inconvenience to consumers in creating webtoons. Finally, Webtoons belonging to 'Romance' do not evoke a variety of consumer sentiments, but they are interpreted as touching consumers. They are expected to be consumed as 'healing content' targeted at consumers with high levels of stress or mental fatigue in their lives. The results of this study are meaningful in that it identifies the applicability of consumer sentiment in the areas of recommendation and classification of webtoons, and provides guidelines to help members of webtoons' ecosystem better understand consumers and formulate strategies.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.6
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• pp.4291-4297
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• 2015

EEG has been used to measure the emotion of amenity and discomfort in the interior space. EEG is limited to the experiment, because it is a equipment of contact type. However, Vibraimage can measure the emotion with a web camera. Because Vibraimage is a equipment of non-contact type, it is more suitable for the interior space than EEG. Therefor, it tries to find a correlation variable between EEG and Vibraimage to measure the human emotions. In this study, it were analyzed correlation of EEG and vibraimage due to variation of loudness 60[dB], 90[dB] and rosemary, jasmine scents. Check the health status of subjects who were selected 3 male students, and the period of this experiment was about months. The condition of the environmental test room was in temperature 25[$^{\circ}C$], relative humidity 50[RH%], air current speed 0.02[m/s] and illuminance 1000[lux]. It were analyzed correlation of twenty-three index of EEG(absolute ${\theta}$, relative ${\theta}$, absolute $S{\alpha}$, relative $S{\alpha}$, absolute ${\alpha}$, relative ${\alpha}$, absolute ${\beta}$, relative ${\beta}$, absolute $\gamma$, relative $\gamma$, absolute $F{\alpha}$, relative $F{\alpha}$, absolute SMR, relative SMR, $SMR/{\theta}$, $SMR+M{\beta}/{\theta}$, absolute $H{\beta}$, relative $H{\beta}$, $H{\beta}/{\alpha}$, absolute $M{\beta}$, relative $M{\beta}$, SEF50, ASEF50) and ten index of Vibraimage(Aggression, Stress, Tension/Anxiety, Suspect, Balance, Charm, Energy, Self regulation, Inhibition, Neuroticism). As a result, I was found that relative ${\gamma}$ index of EEG and neuroticism index of Vibraimage have a high correlation as (${\pm}$).414 and (${\pm}$).424.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.2
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• pp.1000-1009
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• 2014

This study selected 582 senior citizens who used 6 senior welfare centers in 7 districts, Daegu and analyzed questionnaires for them from January 9 through June 5, 2013 in order to look into their subjective oral health, social efficacy and quality of life according to their subjective cognition of oral health and their quality of life related to oral health according to sociodemographic characteristics and drew the following conclusions: Sex was statistically significant in toothache and xerostomia; age, in oral health, dysmasesis, toothache, periodontal complications and xerostomia; the level of education, in oral health, dysmasesis, toothache and periodontal complications; and the number of family members living together, in dysmasesis, toothache, periodontal complications, xerostomia and halitosis. Their responses to the question about their social efficacy according to oral health included: 'My oral health is not good' 3.11 points; and 'My jaw crackles or hurts' 1.99 points. In social efficacy according to their cognition of oral health, their health was 2.05 points while in the quality of life, their health was 3.41 points. In the scores of the quality of life related to oral health, for their health, functional limitation was 2.13 points; physical pain, 2.53; psychological discomfort, 2.17; physical limitation, 2.31; degradation of psychological ability, 2.06; degradation of social ability, 1.81; and social disadvantage, 1.99. In sum, it is judged that senior citizens' quality of life as well as their oral health will be enhanced when active seeking for plans to prevent the progress of oral diseases is sufficiently considered through continuously providing oral health education for the promotion of geriatric oral health and developing preventive programs.

• Journal of radiological science and technology
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• v.39 no.1
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• pp.51-57
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• 2016

Acoustic noise during magnetic resonance imaging (MRI) is the main source for patient discomfort. we report our preliminary experience with this technique in neuroimaging with regard to subjective and objective noise levels and image quality. 60 patients(29 males, 31 females, average age of 60.1) underwent routine brain MRI with 3.0 Tesla (MAGNETOM Tim Trio; Siemens, Germany) system and 12-channel head coil. Q-$T_2$ and $T_2$ sequence were performed. Measurement of sound pressure levels (SPL) and heart rate on Q-$T_2$ and $T_2$ was performed respectively. Quantitative analysis was carried out by measuring the SNR, CNR, and SIR values of Q-$T_2$, $T_2$ and a statistical analysis was performed using independent sample T-test. Qualitative analysis was evaluated by the eyes for the overall quality image of Q-$T_2$ and $T_2$. A 5-point evaluation scale was used, including excellent(5), good(4), fair(3), poor(2), and unacceptable(1). The average noise and peak noise decreased by $15dB_A$ and $10dB_A$ on $T_2$ and Q-$T_2$ test. Also, the average value of heartbeat rate was lower in Q-$T_2$ for 120 seconds in each test, but there was no statistical significance. The quantitative analysis showed that there was no significant difference between CNR and SIR, and there was a significant difference (p<0.05) as SNR had a lower average value on Q-$T_2$. According to the qualitative analysis, the overall quality image of 59 case $T_2$ and Q-$T_2$ was evaluated as excellent at 5 points, and 1 case was evaluated as good at 4 points due to a motion artifact. Q-$T_2$ is a promising technique for acoustic noise reduction and improved patient comfort.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.14 no.2
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• pp.173-182
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• 2001

This Study is attempted in order to observe a clinical analysis from Constitution medical view point about allergic rhinitis. We studied 71 patients who had visited Dept. surgery, opthalmology & otolaryngology, col1ege of Oriental Medicine, Kyungsan University, Pohang, Korea and were treated by medications of Sasang Constitution and Constitution-Acupunture with allergic rhinitis from March 1, 2000 to February 28, 2001. The results were as follows: 1. The sex distribution was 71 males($69\%$), 22 femail($31\%$), In age distribution, the average was 29.6. The peak age was thirties($36.7\%$), teen-ager was $23.9\%,\;fortieth\;was\;15.5\%,\;under\;10\;years\;old\;was\;9.9\%,\;twenties\;was\;7\%,\;fifties\;was\;5.6\%,\;sixtisth\;was\;1.41\%$. 2. In the age of onset, thirties was $29.6\%$, teen-ager was $19.7\%$, twenties was $18.3\%$, under 10 years old and fortieth was $14.1\%$, fifties was $3.8\%$, sixtisth was $1.41\%$. 3 In monthly distribution. september was $25.8\%$, january was $14.1\%$, october was $11.3\%$. november and august was $8.5\%$, april was $7\%$, febuary and may were $5.6\%$, june, july. December were each $4.2\%$, In the distribution of season. the peak season was fall from september to November. 4. In the duration of the disease, 1-3 years was $26.8\%$, 3-5 years was $19.7\%$, 6 months - 1 year $16.9\%$, 5-10 years was $14.1\%$, under 6 months was $11.3\%$, over 10years and over 15 years were each $5.6\%$. 5. In the three main symptom, hydrorrhoea was $71.8\%$, nasal obstruction was $67.6\%$, sneezing was $64.8\%$. In others, fatique was $25.6\%$, headache was $14.1\%$, itching and cough was $11.3\%$, laryngopharyngeal discomfort and red eye were $4.2\%,\;infirmity\;was\;2.8\%$. 6. Patients whose families have allergic disease account for 26 cases($36.6\%$). 7. There was no past history in 37 cases($52.l\%$). In past history distribution, digestive tract disease was $12.7\%$, paranasal sinusitis was $8.5\%$, allergic dermatitis was $7\%$, common cold was $4.2\%$. otitis media, bronchitis, asthma, tonsillitis were $2.8\%$. 8. Sasang Constitution classification was Soyanggin in 52 cases($73.2\%$), Taeumgin in 12 cases($16.9\%$). Soumgin in 7 cases($9.9\%$). 9. In the duration of treatment, it was 1-2 weeks in 26 cases($36.6\%$), 2-4 weeks was $21.1\%$, under 1weeks was $14.1\%$, 4-6 weeks was $11.3\%$, 6-8 weeks was $8.5\%$, 8-10 weeks was $5.6\%$, over 10 weeks was $2.8\%$. 10. We had a follow-up survey the effect of treatment in the 60 cases. there was fair in 25 cases($41.7\%$), good in 21cases($35\%$), excellent in 3cases($5\%$)로 total rate of treatment was $81.7\%$. The case of no change was $16.7\%$, the case of poor was $1.6\%$.

• Journal of Chest Surgery
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• v.39 no.3 s.260
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• pp.220-225
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• 2006

Background: Spontaneous pneumomediastinum is an uncommon, benign, self-limited disorders that usually occurs in young adults without any apparent precipitating factors or disease. The purpose of this study was to review our experience in dealing with this entity and describe a reasonable course of assessment and management. Material and Method: A retrospective case series was conducted to identify adults patients with SPM who were diagnosed and treated in a single institution between 2001 and 2005. Result: Fifteen patients were identified who included 14 men and 1 women with a mean age of 26 years. Presenting symptoms were chest pain in 12 patients ($80\%$), dyspnea in 5 patients ($33\%$), and throat discomfort in 4 patients ($26\%$). Two cases were associated with use of inhalational drugs and 3 cases were associated with exercise. The predisposing factors were asthma, excessive exercise, and vomiting in spontaneous pneumomediastinum. The physical findings were subcutaneous emphysema in 10 patients ($77\%$). Chest radiography and computerized tomography were the diagnostic methods in all cases with CT scan revealing six cases with associated pulmonary abnormalities. Esophagogram and flexible bronchoscopy were selectively used. Fifteen patients ($100\%$) were admitted to the hospital. Their mean hospital stay was 3 days. All patients were conservatively treated. In a follow-up of 3 years no complications or recurrences were observed. Conclusion: Most simple spontaneous pneumomediastinum cases were benign diseases and most of them ($77\%$) had shown typical chest pain, dyspnea and subcutaneous emphysema. Inhalational drug use was not a major cause of SPM; however, increased use of bronchoinhalers was a suspicious cause of SPM.

• Journal of Chest Surgery
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• v.39 no.4 s.261
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• pp.310-316
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• 2006

Background: We study the QOL (quality of life) & functional improvement in patients underwent esophageal surgery for cancer by the viewpoint of the patient and would like make the guideline of recovery course. Material and Method: Between Dec. 1996$\sim$Aug. 2002, 250 patients were operated and 57 patients was enable interview, didn't have evidence of recurrence & survived more than 1 year postoperatively at Asan Medical Center. Questionnaire made by direct or telephone interview & include diet habitus, change of body weight, G-E (gastroesophageal) reflux, dumping symptom, change of daily life. Result: There were 53 men (93%), 4 women (7%) with mean age of $62.05{\pm}8.7$ (range: $37{\sim}94$). Operation method was Ivor Lewis operation in 43 case (75.4%), Esophagocolojejunostomy 4 case (7.1%), Mckeown operation 10 case (17.5%). In Diet habitus, 55 patients (96.5%) ate more than three times in a day with mean diet frequency was 3.5 times/day, 51 patients (89.5%) have been ate solid, regular diet, 5 patients (8.8%) enable to eat liquid diet. To compare with preoperative state, 32 patients (56.9%) had a diet speed more than 80%, 28 patients (39.1%) had a diet amount more than 80%. 32 patients (56.9%) had a little change of body weight within a 10%, 25 patients (43%) had a improvement rather than preoperative state. In G-E reflux, 4 patients (7%) had a reflux after every diet, 27 patients (47.4%) had a little reflux after diet. In dumping symptom. 7 patients (12.3%) had a diarrhea after meal. 38 patients (66.6%) had a normal activity 19 patients (33.3%) had a decreased activity. At present state, majority (53 patient-93%) of patient were satisfactory to the operation result, in spite of discomfort from time to time. In the emotional status, 50 patients (88%) had a well sleeping without disturbance. 65% of patients were comfortable in the psychology state. 39% of patients had a libido. Compare with their median age (63 y), it's a normal varient. Conclusion: QOL in patients underwent esophageal surgery for esophageal cancer nearly recovery to preoperative state.

• The Korean Journal of Nuclear Medicine
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• v.39 no.1
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• pp.9-14
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• 2005

Purpose: Abnormal myocardial perfusion may be caused by ventricular preexcitation, but its location, extent, severity and correlation with accessory pathway (AP) are not established. We evaluated perfusion patterns on myocardial perfusion SPECT and location of AP in patients with WPW (Wolff-Parkinson-White) syndrome. Materials and Methods: Adenosine Tc-99m MIBI or Tl-201 myocardial perfusion SPECT was performed in 11 patients with WPW syndrome. Perfusion defects (PD) were compared to AP location based on ECG with Fitzpatrick's algorithm or electrophysiologic study and radiofrequency catheter ablation. Results: Patients had atypical chest discomfort or no symptom. Risk of coronary artery disease (CAD) was below 0.1 in 11 patients using the nomogram to estimate the probability of CAD. Coronary angiography was performed in 4 patients (mid-LAD 50% in one, normal in others). In 4 patients, AP localization was done by electrophysiologic study and radiofrequency catheter ablation (RFCA). Small to large extent ($11.0{\pm}8.5%$, range:$3{\sim}35%$) and mild to moderate severity ($-71{\pm}42.7%$, range:$-2l7{\sim}-39%$) of reversible (n=9) or fixed (n=1) perfusion defects were noted. One patient with right free wall (right lateral) AP showed normal. PD locations were variable following the location of AP. One patient with left lateral wall AP was followed 6 weeks after RFCA and showed significantly decreased PD on SPECT with successful ablation. Conclusion: Myocardial perfusion defect showed variable extent, severity and location in patients with WPW syndrome. Abnormal perfusion defect showed in most of all patients, but it did not seem to be correlated specifically with location of accessory pathway and coronary artery disease. Therefore myocardial perfusion SPECT should be interpreted carefully in patients with WPW syndrome.

• The Journal of Korean Society for Radiation Therapy
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• v.30 no.1_2
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• pp.185-189
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• 2018

Purpose : We evaluated the quality of life satisfaction of patients with radiation therapy while maintaining the set-up line. Materials and Methods : We retrospectively reviewed 60 patients who visited our clinic in January, 2018. The most common complaint was the inconvenience of not being able to wash during treatment (64 %), and a surgical tape was placed on the Set-up Line to help patients wash during the treatment period. A total of 50 patients who underwent surgical tape were evaluated on a 5-point scale (1 point was very unsatisfactory, 2 points were unsatisfactory, 3 points were average, 4 points were satisfied, 5 points were very satisfied). Forty patients out of 50 responded to the first treatment, and 10 patients underwent treatment. Results : In the first survey, 68 % of the patients and 32 % of the males were aged 34 %, 50~60 % and 38 %, respectively. Treatment areas were breast (57 %), chest (13 %), pelvis (10 %). The results of the second questionnaire after applying the surgical tape showed that 25 of the 40 patients and 15 of the male patients were treated. The treatment area was 22 breast and 18 pelvic areas. In the satisfaction of the 5-point scale, 5 to 15 points were satisfied with 1-3 points, and 4-5 points with 35 points (1 point 2 points, 2 points 2 points, 3 point 1 points, 4 point points 17 point points, % And 43 %, respectively. The results of the questionnaire survey of patients who were applied during the treatment showed that 9 out of 10 women and 1 male were treated. The treatment area was 8 breast and 2 pelvic areas. One point was satisfied with one point, and five points with nine points were satisfied with 90 %. Conclusions : The importance of improving the quality of life of patients with cancer is also important. After applying the surgical tape, 88 % of the patients who started the treatment and 90 % of the patients who applied during the treatment were satisfied. Particularly, patients who applied during treatment showed higher satisfaction. If this is not possible for all patients, selective application to patients with discomfort will be helpful in improving the quality of life of cancer patients.

• The Journal of Korean Society for School & Community Health Education
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• v.4
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• pp.21-41
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• 2003

The purposes of this study were to ; first, investigate High School Teachers health promotion behavior types; second, explore the effects High School Teachers perceived benefits and perceived barriers have on their health promotion behavior ; third, suggest a desirable course that will increase teachers health. To this end, this researcher conducted a survey on health promotion behavior, perceived benefits, and perceived barriers to 329 High School teachers working in Goyang-si, Gyonggi-do. The results of the survey are as follows: Health Promotion Behavior A closer look at high school teachers health promotion behavior shows that male teachers, compared with female teachers, more actively promote their health. However, female teachers are more aware of their personal hygiene and disease risks. Older teachers, rather than younger teachers, are more willing to promote their health through better eating habits and more frequent exercise. A comparison between married and single teachers revealed that married teachers promote their health through better eating habits, and single teachers receive less stress and are better at managing their stress. Teachers working in technical high schools are better at managing their stress and personal hygiene than academic high schools teachers. Teachers working after 8 o'clock show better health promotion behavior through proper eating habits, stress management, regular exercise, disease prevention: however, teachers working before 7:30 are poor at managing their stress. Teachers not teaching supplementary lessons and not supervising night self-study are better at managing their stress, exercise schedule, and disease prevention than teachers who are. Perceived Benefits, Perceived Barriers, and Health Promotion Behavior A Comparison between male and female teachers shows that female teachers firmly believe improved eating habits and regular exercises would greatly enhance their health. However, female teachers felt more discomfort in their working environment and in utilizing medical institutes. Teachers in the 20s and 40s perceived health benefits through regular lifestyle and exercise. Teachers with less experience feel more pressure from their work environment. Teachers below their 30s feel more dissatisfaction towards using medical facilities. Teachers working in Technical High Schools are more aware of promoting their health through regular health checkups, exercise, and lifestyle ; however, teachers from Academic High Schools feel more pressure from their work environment. Teachers not performing supplementary lessons and supervising night self-study sessions are more willing to go through regular health checkups than those performing them. Also, teachers with supplementary lessons and night self-study supervisions claimed lack of leisure time, pressure from work environment, and inconvenience in using medical facilities a deterrent to promoting their health behavior. The Relationship between Health Promotion Behavior, Perceived Benefits, and Perceived Barriers The correlation ratio between Health Promotion Behavior and Perceived Benefits shows a positive relationship. The results show that High School teachers believed regular health checkups are necessary in maintaining their health. This research shows that teachers consider the following factors important in the order shown ; regular lifestyle and exercise, prevention of geriatric diseases, improving ones eating habits. In short, teachers who are more aware of the importance of regular health checkups are also more aware of the importance of promoting their health. The correlation ratio between Health Promotion Behavior and Perceived Barriers shows negative relationship. High School Teachers believe that lack of leisure activity, pressure from work environment, familys financial burden, fear of diseases, inconvenience in using medical facilities are a deterrent in promoting their health behavior. In other words, teachers with less leisure time and negative pressures from their work environment were less active in promoting their health behavior. This study shows that High School teachers will be able to promote their health behavior by maintaining regular health checkups, lifestyle, exercise, and preventing geriatric diseases. However, teachers believed that insufficient leisure time and negative pressure from their work environment acted as a deterrent to maintaining their health behavior. Most High School teachers believe they are at present healthy, and they were actively engaged in Preventative Health Promotion. The result of this study demonstrates that External factors have a large impact on teachers, which in turn acts negatively on their Health Promotion Behavior. In order to guarantee teachers health promotion behavior, systematic health checkups and increased leisure time, improvement in their work environment are necessary. Teachers also need to take a more active interest in their health.