• Journal of the Korean Dietetic Association
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• v.25 no.4
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• pp.295-309
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• 2019

The purpose of this study were to identify the dietary practices of vulnerable older adults and to assess the foodservice and food provision service programs perceived by the health and welfare service providers in the community. A survey was conducted on health and welfare service providers working in outreach community centers and community health centers in Seoul. A total of 260 nurses and social workers participated in the survey and 224 responses were used for data analysis after excluding significant missing data. The respondents consisted of nurses (58.5%) and social workers (41.5%). In terms of the dietary life of the vulnerable older adults, they perceived that the food cost was burdensome to the older adults and poor dental conditions prohibited them from eating various foods. The health and welfare service providers rated highly for 'home-delivered meal and side dish services are effective for checking older adults' conditions' but rated low for availability of menu choices. In targeting vulnerable older adults for food and nutrition service programs, the home-delivered meal service was found to be suitable for older adults living alone, those over age of 80 years, those with mobility difficulties, and those with economic difficulties. The food provision service was appropriate for older adults living with their spouse or other family members. Vulnerable older adults are a heterogeneous population with diverse needs related to food and nutrition. Home-delivered meal/side dish service and food provision services will achieve their goals when they reach the correct targets with a customized service.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.517-520
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• 2009

Healthcare application system has been actively researched to apply WSN technology to healthcare area with a mobile sensor node of low cost, low power, and small size. Sensor node has the problem for transmission range of RF power and time delay of the wireless routing connectivity between sensor nodes. In this paper, we proposes a new method utilizing mobile sensor nodes with relay sensor nodes for quick network routing changing using query technique in healthcare system. A query processor to control and manage the routing changing of sensor nodes in a wireless sensor network was designed and implemented. The user's PC transmits the beacon message which will change the quick link routing according to activity status of patient in wireless sensor network. We describe the implementation for query protocol that is very effective of power saving between sensor nodes.

• Korean Journal of Soil Science and Fertilizer
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• v.48 no.6
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• pp.666-670
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• 2015

Competition among anion species in solution for same sorption sites and soil surface can be of major significance in determining the effective mobility of any potentially adsorbing species. Major soil anion species include $OH^-$, $F^-$, $Cl^-$, $HCO_3{^-}$, $CO_3{^-}$, $NO_3{^-}$, $SO_4{^{2-}}$, and $PO_4{^{3-}}$. And some micro nutrients such as boron and molybdenum exist as $H_2BO_3{^-}$ and $MoO_4{^{2-}}$, as do some heavy metals such as chrome and arsenic as $CrO_4{^{2-}}$ and $HAsO_4{^{2-}}$. Pesticides such as 2,4,5-T and 2,4-D also exist as anions. Many anion species are retained by more complex mechanisms than the simple electrostatic attractions involved in most cation adsorption reactions. In binary system composed of two anions, the adsorption of one anion is influenced by the other anion due to the competition for the available and limited binding sites in soil constituents. The specifically adsorbed anions may compete more effectively for sorption sites than that of nonspecifically adsorbed anion. In this study, we aim to evaluate the mathematical models to determine the magnitude of concentration variations in adsorption due to competitive interactions between anions introduced to a system in binary mixtures.

• Journal of Information Technology Services
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• v.20 no.4
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• pp.95-111
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• 2021

Recently, many organizations are actively adopting VDI (Virtual Desktop Infrastructure), an IT-based business system, to build a non-face-to-face business environment for smart-work. However, most of the existing research on VDI has focused on the satisfaction of system service quality or the use of IT resources and investment for VDI introduction. However, research on effective management and utilization of factors according to the characteristics of VDI technology is urgently required. This study is an empirical research study on how VDI technology characteristics affect interactions and work performance by identifying differences in utilization factors between general organization members and IT managers, presenting standards for business utilization and management. This study proposed a model and hypothesis that the system technology characteristics for VDI use are mediated by interactions in which users respond to functions appropriate to their work. In order to verify the hypothesis, a questionnaire survey was conducted on 188 people of companies and institutions that have adopted and used VDI through a questionnaire survey. Data analysis was performed with partial least squares (PLS), a structural equation modeling (SEM) technique that uses a component-based approach to estimation. As a result of the empirical analysis, the same environmental function for performing work, N-th security, and remote access function factors for non-face-to-face work have a significant effect on interactivity, and IT managers have an additional significant effect on the management technology characteristics of resource reallocation. Has been shown to affect. The results of this study aim to minimize trial and error due to new introduction by presenting considerations for future VDI introduction through case analysis.

• International Area Studies Review
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• v.15 no.2
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• pp.101-123
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• 2011

The paper is basically attempted to reveal the factor price equalization(FPE) on Korea, United States, and Japan by the ARDL-bounds testing. Wage-rental ratio and relative commodity prices between Korea, United States, and Japan are analyzed by employing equality and convergence frameworks. Empirical evidences are shown that necessary and sufficient conditions for the FPE seems to be easily satisfied in a small country such as Korea rather than large ones as like United States and Japan. And, the FPE is more easily achieved by a nominal term rather than the real term. Due to the fact that an error correction term in the Error Correction Model is insignificant, direct mobility of labor and capital between the countries is not that effective to a short run adjustment. It implies that the FPE is in general going through a long run path. It also has to be mentioned that a trade policy has to selectively implemented depending on the weight of trading volumes and it has to be build up by a long run basis.

• Journal of Service Research and Studies
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• v.8 no.3
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• pp.37-49
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• 2018

In this study, we conducted an exploratory study for designing service science as a degree program that will lead the 21st century. In the new era, the convergence of industries is accelerating and the mobility of the profession is greatly increased, so the talents to be trained in higher education will be greatly changed. We must cultivate human resources capable of creating their own jobs through competency development and cultivate talented individuals who can demonstrate creative initiative in the ecosystem where the boundaries between industries are dismantled. To this end, it is required to switch from the existing vertical majors and systems to horizontal majors, and service majors are expected to play a key role in this transition. In this study, we designed the service science degree program reflecting the changes of the new economy and reflecting the demand of the new education. The service science curriculum provides an analysis as it can award a degree as an independent major, or may serve as a sub-major or an associate major with existing majors. Service studies are expected to play the most effective role in cultivating the capabilities defined by the 21st century human resources in the World Economic Forum.

• Journal of muscle and joint health
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• v.26 no.2
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• pp.141-154
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• 2019

Purpose: This study aimed to analyze the effects of exercise on pulmonary function in patients with ankylosing spondylitis (AS). Methods: Randomized controlled trials (RCTs) were identified by searching MEDLINE, EMBASE, CENTRAL, and CINAHL (through Jan 2019). Three reviewers independently retrieved articles, extracted data, and assessed methodological quality using the Cochrane's Risk of Bias for randomized studies. Results: Fourteen studies met the inclusion criteria with a total of 729 participants. CE (SMD 0.58, 95% CI 0.41~0.75, p<.001) and $VO_2peak$ (SMD 0.56, 95% CI 0.24~0.88, p=.001) had a significant effect on the most exercise interventions. As a secondary variable, BASFI (SMD -0.53, 95% CI -0.70~-0.37, p<.001), BASMI (SMD -0.75, 95% CI -0.92~-0.58, p<.001) showed an effect size of more than medium. However, PFT and QoL did not produce a significant results. Conclusion: Pulmonary involvement is common in patients with AS and might have disturbed functionality and exercise modality. Exercise can be an effective intervention to improve pulmonary function in patients with AS. More attention is needed to improve the chest and spinal mobility to maintain the appropriate pulmonary function. It is also necessary to consider how to construct a patient-tailored exercise program to increase performance, accuracy and safety of exercise.

• Journal of the Korean Applied Science and Technology
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• v.36 no.1
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• pp.189-199
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• 2019

The aim of this study was to investigate the effect of combine exercise on the fall injury related index and myokine in elderly women. Sarcopenia leads to a loss of strength, alter on to a decreased functional status, impaired mobility, a higher risk of falls, and eventually an increased risk of mortality. Aerobic exercise characterized by rhythmic and repetitive movements of large muscles, for sustained periods that depends primarily on the use of oxygen to meet energy demands through aerobic metabolism, and that is structured and intended to generate improvements in cardiopulmonary fitness, body composition, and cardiorespiratory health. Resistance training has performance in the elderly. As combined exercise therapy can be used to enhance muscle functions and cardiopulmonary functions, it is being highlighted as an effective health management methods for the aged. The myokine has been regarded an important factor of exercise how muscle communicate adipose tissue, bone and muscle to exert beneficial effects at the whole body level.

• Journal of Convergence for Information Technology
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• v.11 no.3
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• pp.87-94
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• 2021

This study was conducted to identify the mental health and quality of life of cardiovascular disease patients by their activities restriction through the second analysis of the 7th KNHANES collected from 2016 to 2018. The subjects of this study were 521 adults with angina or myocardial infarction who had no missing variables among 24,269 subjects. The difference between mental health and quality of life according to the activity restriction was analyzed by Chi-square method and the effect of mental health and quality of life by activity restriction by Logistic regression method using the SAS 9.4 version. The results of the analysis showed that the stress level, the depression for the last two weeks and suicide thought level was high when there was activity restriction, which had a significant effect on mental health. Mobility, selfcare and usual activities were disrupted, and pain/inconvenience and anxiety/depression increased when there was activity restriction, which also showed a significant effect on quality of life. Therefore, it is suggested that the development and operation of effective physical activity promotion program to minimize activity restriction is necessary to improve mental health and quality of life of cardiovascular patients.

• Korean Journal of Metals and Materials
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• v.50 no.8
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• pp.613-618
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• 2012

We report on electrical and mechanical properties of silicon nitride ($SiN_x$) films deposited by a plasma enhanced chemical vapor deposition (PECVD) method at $200^{\circ}C$ from $SiH_4$ highly diluted in $N_2$. The films were also prepared from $SiH_4$ diluted in He for comparison. The $N_2$ dilution was also effective in improving adhesion of the $SiN_x$ films, fascilitating construction of thin film transistors (TFTs). Metal-insulator-semiconductor (MIS) and Metal-insulator-Metal (MIM) structures were used for capacitance-voltage (C-V) and current-voltage (I-V) measurements, respectively. The resistivity and breakdown field strength of the $SiN_x$ films from $N_2$-diluted $SiH_4$ were estimated to be $1{\times}10^{13}{\Omega}{\cdot}cm$, 7.4 MV/cm, respectively. The MIS device showed a hysteresis window and a flat band voltage shift of 3 V and 0.5 V, respectively. The TFTs fabricated by using these films showed a field-effect mobility of $0.16cm^2/Vs$, a threshold voltage of 3 V, a subthreshold slope of 1.2 V/dec, and an on/off ratio of > $10^6$.