• Journal of the Korean Society for Precision Engineering
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• v.32 no.2
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• pp.199-208
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• 2015

The aim of this paper is to review recent developments and commercialized products in the field of wearable wellness sensors and devices (WWSD). Although there are several dedicated researches, the completed theories and systematic techniques have not been well established. Therefore, we divided the WWSD into four different topics (healthcare, safety & prevention, gaming & lifestyle, and sports & fitness), and review the state of the arts and challenges on the applications on the sensor and device technologies with particular focus on WWSD. We also review the limitations of the current technologies on the developments and commercialized products. Finally, we suggest and discuss new research topics related on the four topics of the WWSD.

• Journal of Digital Convergence
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• v.13 no.3
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• pp.215-220
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• 2015

This study attempts to find how the government policies regarding population aging may affect the life patterns of the baby boomers and what factors play a significant role in providing life wellness. This study uses the data provided by Korea Welfare Panel Study published between the years 2006 and 2011. First, according to the analysis of the data from Korea Welfare Panel Study in the year 2006, the factors affecting the life wellness are family relations, health and social relations. However, between the years 2007 and 2009, the major factor is not the present income providing security or life satisfaction. Second, the next significant factor in improving the wellness of life is family relations after health or occupation. Therefore, the government should provide them with re-employment programs prior to their retirement through which baby boomers can find employment similar or different to their present occupations. For improving the wellness of life, the most significant factor is family relations.

• Journal of Digital Convergence
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• v.17 no.6
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• pp.279-286
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• 2019

This study was aimed to verify the influencing factors on wellness by examining the relationships between self-efficacy for exercise, psychological need satisfaction in exercise, and wellness. The subjects of this study were self - report questionnaires collected from 88 male and female adults aged between 19 and 60 years during April 6 ~ June 8, 2017. The collected data were analyzed by SPSS/WIN 22.0 program using descriptive statistics, Pearson correlation coefficient analysis, and multiple regression analysis. As results of multiple regression analysis, the factors affecting on the wellness of adults were a relatedness of psychological need satisfaction in exercise(${\beta}=.316$, p=.012) and self-efficacy for exercise(${\beta}=.279$, p=.008). Based on the results of this study, it is necessary to implement and develop a tailored wellness program that improves the psychological need satisfaction in exercise and exercise self-efficacy for adults.

• Journal of Digital Convergence
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• v.19 no.5
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• pp.333-342
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• 2021

The purpose of this study was to examine to identify factors affecting wellness of fire officials. This study collected questionnaire data from 219 fire officials working in Gyeongsangnam-do. Data were analyzed using descriptive statistics, Pearson's correlation, Sobel test and multiple regression analysis with IBM SPSS statistics 24.0 program. Wellness of fire officials was correlated with job stress(r=.-49, p<.001) and positive psychological capital(r=.70, p<.001). In addition, job stress showed a significant negative correlation with positive psychological capital (r=-.56, p<.001). As a result of analyzing the mediating effect of positive psychological capital on the relationship between job stress and wellness of fire officials, positive psychological capital showed a significant mediating effect. Based on the finding, it is necessary to develop an intervention program that strengthens positive psychological capital in order to improve the wellness of fire officials and reduce job stress.

• Journal of Digital Convergence
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• v.13 no.8
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• pp.543-548
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• 2015

The present sturdy was designed to determine the effect of the antiproliferation in human cancer cells using the ordinary vegetable soup (VS), the soup with broccoli (VSB) and the soup with tomatoes(VST). Human cancer cells identify the cancer cell growth with MTS, using stomach cancer cell line(AGS), human promyelocytic leukemia (HL-60) and lung cancer cell line (A549). VSB and VST are effective on the cancer cell growth inhibition activities of AGS and have a significance compared with VS. VST has a significance with HL-60 and VSB works well in A549 more than VS. Mixed vegetable soup is considered to applicate with functional materials and using for wellness life.

• Journal of the Korean Solar Energy Society
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• v.34 no.4
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• pp.9-16
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• 2014

A proton exchange membrane is a core component in the proton exchange membrane fuel cell because the role of proton exchange membrane(PEM)is supplying proton conductivity to fuel cell, a gas separator, and insulating between an anode and cathode. Among various role of PEM, supplying proton conductivity is the most important and the proton conductivity is strongly related the structural evolution of PEM by hydration. Thus a lot of studies have done by past few decade based on small angle X-ray scattering and wide angle X-ray scattering for understanding morphological structure of the PEM. Resulting from these studies, several morphological models of hydrated PEM are proposed. Current sensing atomic force microscopy (CSAFM) can map morphology and conductance on the membrane simultaneously. It can be the best tool for studying heterogenous structured materials such as PEM. In this study, the hydration of the membrane is examined by using CSAFM. Conductance and morphological images are simultaneously mapped under different relative humidity. The conductance images, which are mapped from different relative humidity, are analyzed by statistical methode for understanding ionic channel variation in PEM.

• Journal of Digital Convergence
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• v.13 no.5
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• pp.357-363
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• 2015

This study investigated the antioxidant and anti-inflammatory effects of Galla Rhois (Rhus verniciflua) on LPS (lipopolysaccharide)-stimulated human osteoblastic cells (MG-63). The aim of this study was to evaluate the LPS induced nitric oxide (NO) production and antioxidant radical in human osteoblast-like MG-63 cells. Therefore, the present work indicate that Galla Rhois extracts may be an ideal candidate for further research into their use for dental caries prevention component as well as, natural plant-based products. This suggested that 80% methanol and hexane extracts of Galla Rhois were inhibited NO generation and 1,1-diphenyl-2-pirylhydrazyl (DPPH) radical. Therefore, 80% methanol and hexane extracts of Galla Rhois may be utilized as a good source of protection against inflammation and oxidative stress. This study is intended to pursue wellness convergence in quality of life in the excavations in natural ingredients to create a variety of oral products with fewer side effects, cheap oral products for the dental treatment.

• Journal of Digital Convergence
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• v.15 no.11
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• pp.231-243
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• 2017

This paper provides a review of the electrical sensing biosensors and examine research cases of biosensors based on clothing and textiels. A biosensor which can measure bio-signals is a device that senses the physical and chemical characteristics of biological materials by using biological sensing materials. Therefore, wellness wear that is closely integrated with the user's real life will play an important role in achieving U-Health. The biosensors' unique feature which can be differentiated from the existing sensors is it's using of selective reactions and binding of biological substances. The electrical sensing biosensors are very small in size due to the processing of electrical signals, which can be used to create ubiquitous. Therefore, it is necessary to study electrical sensing biosensors that are easy to miniaturize to develop wellness wear. This paper describes the electrical sensing biosensor (an electrochemical method nanowire/carbon nanotube FET method) in detail. Finally, the future direction of biosensors to be applied to wellness wear is suggested.

• Journal of Digital Convergence
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• v.11 no.9
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• pp.79-86
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• 2013

I have empirically investigated the relationship between work-family facilitation and perceived team performance and the moderating effect of wellness climate between work-family facilitation and perceived team performance. For testing hypothesis, hierarchical linear regression was conducted. The results of analysis are followings; hypothesis 1, work-family facilitation is positively related to perceived team performance, was significantly supported. Hypothesis 2, wellness climate moderates the association between work-family facilitation and perceived team performance. The results imply that when the HR practitioners design job and welfare program of employees should consider work-family facilitation. Additionally, to improve the performance of organization should consider not only work-family facilitation but also climate of organization supporting work-family facilitation, wellness climate.

• Journal of the Korean Solar Energy Society
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• v.34 no.4
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• pp.1-7
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• 2014

The microgrid system is the combination of photovoltaic(PV) array, load, and battery energy storage system. The control strategies were defined as multi-modes of operation, including rest operation without use of battery, power charging, and power discharging, which enables grid connected mode or islanded mode. Photovoltaic power is a problem of the uniformity of power quality because the power generated from solar light is very sensitive to variation of insolation and duration of sunshine. As a solution to the above problem, energy storage system(ESS) is considered generally. There fore, in this study, we did basic research activities about optimization method of the amount of energy used, using a smart microgrid test-bed constructed in building. First, we analyzed the daily, monthly and period energy pattern amount of power energy used, and analyzed PV power generation level which is built on the roof. Utilizing building energy pattern analysis data, we was studied an efficient method of employing the ESS about building power consumption pattern and PV generation.