• The Journal of Asian Finance, Economics and Business
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• v.7 no.7
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• pp.509-517
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• 2020

The study seeks to understand the effects of boredom proneness on impulse purchasing and smartphone addiction of young consumers. Moreover, the possible mediating role of smartphone addiction is tested for the effect of boredom proneness on impulse purchasing. Nowadays, the effect of emotions on human behavior is generally accepted, and boredom is one of the important and common problematic feelings or moods at various levels of life due to factors like unemployment, not being able to work in a suitable job, not getting appropriate education matching individual abilities, monotony of tasks, and feeling life is meaningless. Investigating the effect of boredom on specific consumer behavior would increase our knowledge about consumer behavior. For the research, a survey was conducted 313 students from Kirikkale University, Keskin Vocational High School; the data were collected by convenience sampling method. The data were processed through statistical tools like exploratory factor analysis, coefficient alphas, and regression analysis. The results of the study reveal that boredom proneness affects impulse purchasing and smartphone addiction. In addition, it is understood that smartphone addiction plays a mediating role in the effect of boredom proneness on impulse purchasing. These results indicate that boredom can be an important factor affecting certain negative consumer behaviors.

• Journal of the Korea Organic Resources Recycling Association
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• v.8 no.1
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• pp.69-76
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• 2000

The aim of this study was to evaluate the feasibilities on national recycling goal upto 40% in 2002 or more in the future. Sampling survey, Including waste generation rates, seperated recyclables and collection forces, covered households of 16,199 units, work places of 90 units and road length of 159km in Seoul. Survey results were used to calculate amounts of solid waste and recyclables according to physical properties, policy oriented measures, generator sand collection forces. This study founded followings ; Seoul's solid waste totaled 11,098ton/day, about 45% of which were recyclables and supposed to maximun level for recycling. Therefore, national goal for recycling proved to be attainable At this time,71.4% of recyclables was seperated by generators, and to stimulate the seperation activities of recyclables, endeavor of establishments, which seperated 65.6% of their recyclables, will be needed more than one of residence, which did 87.4% of their recyclables. Private forces collected 86.6% of recyclables seperated by generators, and have collection potentials equivalent to all recyclables generated in Seoul. But some incetives should be introduced to encourage private forces' activities, because values of recyclables to be collected in the future are lower than that did now.

• The Journal of Korean Physical Therapy
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• v.27 no.4
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• pp.234-239
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• 2015

Purpose: This study is not a fragmentary study on characteristics of respiratory synergist when breathing, however it was intended to determine the effect of currently available respiratory exercise and to provide basic clinical information through investigation of oxygen demand and respiratory synergist that mobilizes for respiration during application of respiratory exercise. Methods: Experimental group I was selected from second grade of severity classification of GOLD, which has the highest percentage among patients with COPD, and experimental group II was selected from third grade of severity classification as a clinical sampling. After respiration pursing up lips and diaphragm respiration exercise were mediated together for six weeks, activity of respiratory muscles and oxygen saturation were measured and analyzed. Results: In comparison of change of respiratory synergist and oxygen saturation, activity of respiratory synergist in sternocleidomastoid muscle and scalene muscle showed a meaningful decrease in experimental group I. And, in comparison of change of respiratory synergist and oxygen saturation, activity of respiratory synergist in rectus abdominis muscle showed a meaningful increase in experimental group II. In comparison of change of respiratory synergist and oxygen saturation, activity of respiratory synergist in sternocleidomastoid muscle, scalene muscle, and rectus abdominis muscle showed a meaningful difference between experimental groups. Conclusion: Respiratory synergists work mainly as agonist of chest and upper limbs. Therefore it is very important to lower mobilization of respiratory synergist when breathing. It is considered that a multilateral approach and continued clinical research for improvement of respiratory function for patients with COPD will be needed in the future.

• Proceedings of the KSRS Conference
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• 2007.10a
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• pp.504-507
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• 2007

The KOMPSAT-2 satellite is a push-broom system with MSC (Multi Spectral Camera) which contains a panchromatic band and four multi-spectral bands covering the spectral range from 450nm to 900nm. The PAN band is composed of six CCD array with 2528 pixels. And the MS band has one CCD array with 3792 pixels. Raw imagery generated from a push-broom sensor contains vertical streaks caused by variability in detector response, variability in lens falloff, pixel area, output amplifiers and especially electrical gain and offset. Relative radiometric calibration is necessary to account for the detector-to-detector non-uniformity in this raw imagery. Non-uniformity correction (NUC) is that the process of performing on-board relative correction of gain and offset for each pixel to improve data compressibility and to reduce banding and streaking from aggregation or re-sampling in the imagery. A relative gain and offset are calculated for each detector using scenes from uniform target area such as a large desert, forest, sea. In the NUC of KOMPSAT-2, The NUC table for each pixel are divided as HF NUC (high frequency NUC) and LF NUC (low frequency NUC) to apply to few restricted facts in the operating system ofKOMPSAT-2. This work presents the algorithm and process of NUC table generation and shows the imagery to compare with and without calibration.

• Journal of Preventive Medicine and Public Health
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• v.42 no.3
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• pp.171-176
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• 2009

Objectives : The frequency of visiting clinics in Jejudo for treating atopic dermatitis (AD) has been reported to be higher than that for other counties of Korea. The aim of this work was to estimate the prevalence of AD for the students of the primary, middle and high schools in Jejudo, Korea. Methods : We planned to evaluate about 5,000 students, so classes were randomly selected by random systematic sampling methods. The parents of all the students in the selected classes were asked to respond to a structured questionnaire concerned with the prevalence of AD. Results : The prevalence of AD based on ever being diagnosed by a doctor, on currently being diagnosed by a doctor, on ever being treated for AD by a doctor, on currently being treated for AD by a doctor was 25.57% (95% CI=25.3-25.8), 14.67% (95% CI=14.5-14.9), 21.90% (95% CI=21.6-22.2) and 14.41% (95% CI=14.2-14.6), respectively. Conclusions : On comparing the prevalence of AD, the students in Jejudo had a higher number of recurrence events in spite of their lower number of cases. Further studies are needed to evaluate these aspects of AD.

• The Journal of Korea Robotics Society
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• v.8 no.2
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• pp.92-103
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• 2013

Humanoid robot is the most intimate robot platform suitable for human interaction and services. Biped walking is its basic locomotion method, which is performed with combination of joint actuator's rotations in the lower extremity. The present work employs humanoid robot simulator and numerical optimization method to generate optimal joint trajectories for biped walking. The simulator is developed with Matlab based on the robot structure constructed with the Denavit-Hartenberg (DH) convention. Particle swarm optimization method minimizes the cost function for biped walking associated with performance index such as altitude trajectory of clearance foot and stability index concerning zero moment point (ZMP) trajectory. In this paper, instead of checking whether ZMP's position is inside the stable region or not, reference ZMP trajectory is approximately configured with feature points by which piece-wise linear trajectory can be drawn, and difference of reference ZMP and actual one at each sampling time is added to the cost function. The optimized joint trajectories realize three phases of stable gait including initial, periodic, and final steps. For validation of the proposed approach, a small-sized humanoid robot named DARwIn-OP is commanded to walk with the optimized joint trajectories, and the walking result is successful.

• Journal of Korean society of Dental Hygiene
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• v.13 no.2
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• pp.239-247
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• 2013

Objectives : The direction for qualitative improvement of our country's workers' by arranging data necessary for improving oral health program and system aiming to promote workers' oral health in the future is suggested in this study. Methods : The questionnaire by self-administrated method, which was selected by convenience sampling method, was carried out from October 4th to December 31th, 2011 targeting 424 workers from 6 working places in Jellabuk-do Province. Results : 1. It was indicated that workers' interest in oral health is higher than moderate and that workers are perceiving oral health as one of critical problems and thinking that the level of their oral health knowledge is low and oral health status is under moderate. 2. It was indicated that the rate of workplace oral screening is high, but the dissatisfaction ratio with workplace oral examination is high. Non-screening of medical treatment was indicated to be the highest after oral examination. 3. Factors of having influence upon the workplace oral examination included age, marital status, appearance, educational level, work-life term, and average monthly household income. Conclusions : It is judged to be likely important to make them have positive attitude toward oral health care through the accurate publicity of workplace oral examination and education on prevention of oral disease by reflecting workers' high interest in oral health.

• Culinary science and hospitality research
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• v.23 no.4
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• pp.10-21
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• 2017

The purposes of this study were to verify the effects of HMR (Home Meal Replacement) selection attributes on satisfaction and loyalty for HMR. In addition, the moderating role of customer value was examined among selection attributes of HMR, satisfaction and loyalty for HMR. Using a convenience sampling method, the data were collected from those who have bought HMR in Seoul and Kyonggi area. After a total of 235 responses were collected, 220 were used for the analyses. The multiple regression analyses were conducted to test the hypotheses. The results are as follows. First, it was found that product practicality and cooking convenience of HMR selection attributes had an effect on satisfaction of HMR but that ingredients safety and package & circulation period did not have an effect on satisfaction of HMR. Second, satisfaction of HMR significantly impacted loyalty for HMR. Third, in low group for customer value, product practicality of HMR selection attributes had an positive effect on satisfaction of HMR, and ingredients safety of HMR selection attributes had an negative effect on satisfaction of HMR. In high group for customer value, cooking convenience of HMR selection attributes had an positive effect on satisfaction of HMR. In low group as high group for customer value, satisfaction of HMR had a greater impact on loyalty for HMR.

• Safety and Health at Work
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• v.5 no.1
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• pp.23-26
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• 2014

Background: The purpose of this study was to compare the concentration of total airborne bacteria (TAB) in biosafety cabinets (BSCs) at universities and hospital microbial laboratories to assess the performance of BSCs. Methods: TAB was determined by using the single-stage Anderson sampler (BioStage Viable Cascade Impactor). The samples were obtained three times (with the BSC turned off and the shield open; with the BSC turned off and the shield closed; and with the BSC tuned on and operating) from the areas in front of 11 BSCs. Results: TAB concentrations of accredited and nonaccredited BSCs were determined. No significant differences were observed in the TAB concentrations of the accredited BSCs and the nonaccredited BSCs for the areas outside the BSCs in the laboratories (p > 0.05). TAB concentrations for the BSCs sampled with the shield open and the instrument turned off showed differences based on the sampling site outside the BSC in each laboratory. Conclusion: These results imply that TAB concentration is not altered by the performance of the BSCs or TAB itself and/or concentration of TAB outside the BSC is not a good index of BSC performance.

• Fire Science and Engineering
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• v.32 no.1
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• pp.116-121
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• 2018

This study aimed to provide help to seeking a preventive method of intervention in firefighter's depression by investigating empowerment and family function level of firefighter's on their depression. For this, the study conducted purposive sampling survey among 351 firefighters at Gyeonggi area. As a result of the research, all of empowerment and family function had a significant effect on depression of firefighters. Based on these findings, the study demonstrated the potential for applying each individual's empowerment as an internal resource for their prevention of mental health. The study suggested that diverse counter measures are needed to boost family bond and family functionality of firefighters, and also proposed positive adoption and assistance for preventive and effective implementation of 'work and life balance' policy to derive the recovery of healthiness of families.