• Journal of The Korean Society of Integrative Medicine
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• v.6 no.3
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• pp.141-147
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• 2018

Purpose : Aim of the this study was conducted to determine whether hearing aids are responsible for the quality of life by comparing quality of life between the elderly who are suspected of difficulty in hearing selected by Hearing Handicap Inventory of Elderly (HHIE) without using hearing aids and who are using hearing aids. Methods : For the study, two groups of 33 people were analyzed for independent t-test based on whether they wore Hearing Aids (HA) or not whom wearing hearing aids (hearing aids users) and suspected difficulty in hearing. who are attending the Religious organization Senior Welfare Center in the OO region. Result : The quality of life of hearing aid users is generally observed to be higher than that of non-users in general, and by the section, psychological (p=0.019) and living environment (p=0.032) were appeared statistically signigicant. The elderly showed a significant difference. In the section, "Operation Satisfaction (p=0.038)" in the physical health area, "relationship of reason (p=0.018)" in the social relationship area, "Economic margin (p=0.021)" in the environmental area, "Information accessibility (p=0.020)", In the psychological area, hearing aid was used for "self satisfaction (p=0.033)", "concentration of work (p=0.045)". Conclusion : The use of hearing aids by hearing loss elderly improves the quality of life in the psychological health and living environment section.

• Research in Community and Public Health Nursing
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• v.21 no.3
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• pp.351-361
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• 2010

Purpose: This study was done to analyze the effects of tele-care case management services using secondary data. Methods: A descriptive research design was utilized, and the participants were 134 medical aid beneficiaries who were in either the high-risk group or the preventive group. Casemanagement services were delivered by 8 care managers. Data were analyzed using PAWS Statistics 17 through descriptive statistics and paired t-test. Results: After the case management intervention, the participants' health quality of life, self-care competency, and reasonable medical care utilization increased significantly for the high-risk group. However there were no significant changes in the preventive group. Conclusion: The results showed that the tele-care case management services were effective for high-risk medical aid beneficiaries. Further studies with controls for constitutional variables and a comparison group are required to validate the robustness of the effectiveness of the case management program in the present study.

• Physical Therapy Korea
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• v.12 no.1
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• pp.54-62
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• 2005

The purpose of this study was to find the effects of using aid in enhancing walking ability inpatients with spinal cord injury who have received rehabilitative care. The study population consisted of 24 spinal cord injury patients referred to the Department of Rehabilitation Medicine in the National Rehabilitation Center (NRC). All subjects were ambulatory with or without an assistive devices. All of the participants were assessed on SCIM II, WISCI II, FIM, MBI, gait speed (m/s), and walking endurance (120 min/m). The data were analyzed using a paired t-test, a one-way ANOVA, and a Duncan test. The results revealed that TSCIM II and all of the items of SCIM II of the cervical ASIA D group patients were higher than those of the Thoracic ASIA A and C group patients (p<.05). The FIM, MBI, and WISCI II of the cervical ASIA D group patients were higher than those of the Thoracic ASIA C group patients (p>.05). The walking velocities of the lumbar ASIA C group patients were higher than those of Thoracic ASIA A group patients (p<.05). The walking endurance of the lumbar ASIA C group patients was higher than that of the thoracic ASIA C group patients (p<.05). The ASIA D group patients used bilateral standard canes or crutches, but none used AFO. The ASIA A and C group patients used bilateral standard walkers with KAFO for standing and walking. The findings suggest that injury level as well as the functionality of walking aids should be considered when formulating a rehabilitative plan for patients with spinal cord injury.

• Journal of the Korea institute for structural maintenance and inspection
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• v.17 no.2
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• pp.135-141
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• 2013

In this study, to improve the early-age compressive strength of mortar, the compressive strength tests of mortar mixed smart BFS powder added powder of rapid setting additives milled by processing, using functional grinding aid, the power-typed rapid setting cement clinker developed by sintering industrial waste and by-products with much CaO-$SiO_2-Al_2O_3$ to cement were performed. From the tests, the followings are found that (1) for BFS early-age strength improvement test (Series I): early-age strength improvement of BFS mixed rapid setting additive milled after adding functional grinding aid, when the clinker is milled, is superior and (2) for OPC early-age strength improvement test (Series II): case of additive mixed rapid setting powder typed activator milled after adding functional grinding aid to Clinker-C showed the higher compressive strength.

• Proceedings of the KIEE Conference
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• 1989.07a
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• pp.153-157
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• 1989

In this paper, a new method of Eye Movement Pattern Encoding (EMPE) which is based on electrooculography(EOG) was suggested for the purpose of effective communication between man and machine, instead of Point-Of-Regard-Selection (PORS) method. Also, ocular interface is designed and the typing aid, eye-pattern writer, was constructed for the test of theoretical validity and its practical aspect. Effect of eye fatigue on the performance of ocular interface was quantified through fatigue test.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 1998.11a
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• pp.235-249
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• 1998

The purpose of this study is to provide an understanding of the designs that aid in the production or selection of clothing that generally corresponds with the contours of the human body. The study looks at effective and attractive clothing design used in various situations with the goal of gaining understanding of the nuances of women's jackets. To achieve the goals of this jacket study, a sensuous test was employed and several horizontal sections, based on silhouette appearance, were compared and then analysed. The sensuous test was aimed at understanding the visual effects of the silhouette of the jacket.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.9 no.2
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• pp.205-212
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• 2016

In this paper, we implement the development platform of multichannel digital hearing aid algorithm using Simulink provided by Matlab. The digital hearing aids are considered medical devices designed to compensate for hearing loss, they need to be correctly selected, to help a person who has difficulty in hearing. The development platform that implemented in this paper, includes WOLA filterbank for analysis/synthesis of input signal, Wide dynamic range compression for hearing loss compensation and adaptive filter for feedback cancellation. Using the development platform, algorithm parameters for each block can be set depending on the hearing aid user. Thus it is possible to test the algorithm before the machine language. As a result, the time for algorithm development can be saved and performance and computational complexity can be optimized.

• Journal of Biomedical Engineering Research
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• v.34 no.1
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• pp.24-33
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• 2013

To enhance the speech perception of hearing aid users in noisy environment, most hearing aid devices adopt various beamforming algorithms such as the first-order differential microphone (DM1) and the two-stage directional microphone (DM2) algorithms that maintain sounds from the direction of the interlocutor and reduce the ambient sounds from the other directions. However, these conventional algorithms represent poor directionality ability in low frequency area. Therefore, to enhance the speech perception of hearing aid uses in low frequency range, our group had suggested a fractional delay subtraction and integration (FDSI) algorithm and estimated its theoretical performance using computer simulation in previous article. In this study, we performed a KEMAR test in non-reverberant room that compares the performance of DM1, DM2, broadband beamforming (BBF), and proposed FDSI algorithms using several objective indices such as a signal-to-noise ratio (SNR) improvement, a segmental SNR (seg-SNR) improvement, a perceptual evaluation of speech quality (PESQ), and an Itakura-Saito measure (IS). Experimental results showed that the performance of the FDSI algorithm was -3.26-7.16 dB in SNR improvement, -1.94-5.41 dB in segSNR improvement, 1.49-2.79 in PESQ, and 0.79-3.59 in IS, which demonstrated that the FDSI algorithm showed the highest improvement of SNR and segSNR, and the lowest IS. We believe that the proposed FDSI algorithm has a potential as a beamformer for digital hearing aid devices.

• Journal of Radiation Industry
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• v.8 no.2
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• pp.133-140
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• 2014

The sterilization of health care products is widely used to choose conventional Ethylene Oxide gas sterilization in South Korea. But the method has brought serious issues because of the toxic residual gas and global warming of $CO_2$ evacuation after the sterilization process. This study is carried out to confirm the application possibility of gamma sterilization instead of Ethylene Oxide in sanitary aid products. Four kinds of products (gauze, menstrual pad, bandage, menstrual tampon) were treated with gamma irradiation of 15 kGy, then analyzed the achievement of the sterility assurance level (SAL) $10^{-6}$ through BI test. The cytotoxicity of accelerated samples of 6 months elapse evaluated by means of colony forming rate at various concentration of the extracts. pH and UV measurements at extract concentrations were tested according to the MFDS (Ministry of food & drug safety) guideline to verify a stability & safety of product sterilized. The results revealed that the extracts did not show any significant changes in cytoxicity assay as well as pH and UV values by gamma sterilization. All extract concentration was observed high cell viability, pH and UV values were calculated within the acceptable range prescribed by the guideline. It indicates that gamma sterilization could effectively substitute for conventional sterilization such as Ethylene Oxide sterilization in the sanitary aid products.

• Speech Sciences
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• v.3
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• pp.26-37
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• 1998

The Connected Speech Test (CST) was developed to test hearing aid performance using realistic stimuli (Connected speech) presented in a background of noise with a visible speaker. The CST has not been investigated as a measure of speech reading ability using the visual portion of the CST only. Thirty subjects were administered the 48 test lists of the CST using visual presentation mode only. Statistically significant differences were found between the 48 test lists and between the 12 passages of the CST (48 passages divided into 12 groups of 4 lists which were averaged.). No significant differences were found between male and female subjects; however, in all but one case, females scored better than males. No significant differences were found between students in communication disorders and students in other departments. Intra- and inter-subject variability across test lists and passages was high. Suggestions for further research include changing the scoring of the CST to be more contextually based and changing the speaker for the CST.