• Title/Summary/Keyword: AGING

Search Result 10,227, Processing Time 0.035 seconds

Design and Implementation of Biological Signal Measurement Algorithm for Remote Patient Monitoring based on IoT (IoT기반 원격환자모니터링을 위한 생체신호 측정 알고리즘 설계 및 구현)

  • Jung, Ae-Ran;You, Yong-Min;Lee, Sang-Joon
    • Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
    • /
    • v.8 no.6
    • /
    • pp.957-966
    • /
    • 2018
  • Recently, the demand for remote patient monitoring based on IoT has been increased due to aging population and an increase in single-person household. A non-contact biological signal measurement system using multiple IR-UWB radars for remote patient monitoring is proposed in this paper. To reduce error signals, a multilayer Subtraction algorithm is applied because when the background subtraction algorithm was applied to the biological signal processing, errors occurred such as voltage noise and staircase phenomenon. Therefore, a multilayer background subtraction algorithm is applied to reduce error occurrence. The multilayer background subtraction algorithm extracts the signal by calculating the amount of change between the previous clutter and the current clutter. In this study, the SVD algorithm is used. We applied the improved multilayer background subtraction algorithm to biological signal measurement and computed the respiration rate through Fast Fourier Transform (FFT). To verify the proposed system using IR-UWB radars and multilayer background subtraction algorithm, the respiration rate was measured. The validity of this study was verified by obtaining a precision of 97.36% as a result of a control experiment with Neulog's attachment type breathing apparatus. The implemented algorithm improves the inconvenience of the existing contact wearable method.

Using frequency and needs for walking sphere of neighborhood facilities by the elderly - Focused on the elderly who lived in Busan - (노인의 근린생활시설 이용정도와 도보권 시설요구 - 부산지역 거주 노인을 중심으로 -)

  • Oh, Chan Ohk
    • Korea Science and Art Forum
    • /
    • v.20
    • /
    • pp.279-292
    • /
    • 2015
  • As the aging society is rapidly coming, the needs for the elderly-friendly living environments was also increasing. The purpose of this study was to examine how frequently 25 neighborhood facilities were used by the elderly and what facility they wanted to be arranged within their walking distance. The subject of this study were 158 elderlies who were their ages of more than 65 years and lived in Busan. The data were collected by using an one to one interview method. Findings were as follows; 1) The elderly used very frequently facility for the elderly such as a senior center, walking road, and park and green space. Also, bus stop, traditional market, and resting facilities were used relatively frequently. 2) Some neighborhood facilities were used not frequently, but periodically. 3) Using frequencies of some neighborhood facilities were different by the elderly's characteristics. 4) Among 25 neighborhood facilities, the facilities which the old persons wanted to be arranged within walking distance were medical clinics, facilities for the elderly, subway station, bus stop, traditional market, park and green space, walking road, and food market/convenience store.

The Effect of Blue Light Interception and SPF Boosting of Sunscreen Prepared with Bandgap-controlled TiO2 (밴드갭이 제어된 TiO2 를 이용한 자외선 차단제의 블루라이트 차단 및 SPF 부스팅 효과)

  • Sung Eun Wang;Jung Kyung Yoon;Gui Su Chung;Sung Bong Kye;Ho Sik Rho;Dae Soo Jung
    • Journal of the Society of Cosmetic Scientists of Korea
    • /
    • v.49 no.2
    • /
    • pp.159-167
    • /
    • 2023
  • Titanium dioxide (TiO2) is commonly used in sunscreen formulations to protect the skin surface and prevent the penetration of harmful ultraviolet (UV) rays by the physical scattering action of light. However, a disadvantage of using TiO2 is that it can cause white turbidity when used on skin due to its inactive mineral ingredient. In addition, when TiO2 particles are reduced to nanosize to eliminate opacity, they can increase the transmittance of visible light and reduce whitening, but may lead to serious skin problems, such as allergic inflammation. To overcome these issues, the bandgap of TiO2 was controlled by adjusting the amount of oxygen defect and nitrogen amount, resulting in color TiO2 tailored to the skin. This innovative technology can reduce the whitening phenomenon and effectively block blue light, which is known to cause skin aging by inducing active oxygen. The bandgap controlled TiO2 compounds proposed in this study are hypoallergenic, broad-spectrum, and environmentally friendly. Furthermore, these compounds have been shown to significantly enhance sun protection factor (SPF) of sunscreens, demonstrating their compatibility with blue light blocking products.

Biomechanical Analysis of Elderly Fall Related Risk Factors using Downhill Walking on Treadmill (트레드밀 내리막 보행을 이용한 노인 낙상관련 위험요인의 운동역학적 분석)

  • Woo, Jeong-Hyun;Park, Sang-Kyoon
    • 한국체육학회지인문사회과학편
    • /
    • v.55 no.2
    • /
    • pp.643-655
    • /
    • 2016
  • The purpose of this study was to investigate biomechanical differences between young and old adults during downhill walking on a treadmill in order to understand the mechanisms of elderly falls. Eighteen healthy young females(YG: yrs: 21.17±1.5) and eighteen healthy old females(OG: yrs: 66.67±1.33) participated in this study. They were asked to walk at their preferred speed on a treadmill at level, 7.5° and 15° decline. OG walked more wobbly in the medial and lateral directions than YG(p<.05). As slope got steeper, OG had smaller ROM(range of motion) of ankle and knee joints compared with YG. However, there was no difference in ROM of the hip between OG and YG, but maximum extension angle of OG was smaller compared with YG(p<.05). Smaller extensor moment was generated on OG during downhill walking(p<.05). It was hypothesized that more risk factors would be found on older people compared to young people during downhill. However, older people actually walks with a safer strategy compared to young people during downhill. Finally, current findings about biomechanical characteristics of elderly walking would provide useful fundamental information for a follow-up study regarding the prevention of elderly fall during their daily life.

Effect of Low-intensity Resistance Training with Blood Flow Restriction on Muscle Volume and Strength in Elderly Women (저강도의 저항성 운동 시 혈류제한 적용이 노인여성의 근 비대와 근력 향상에 미치는 영향)

  • Yeo, Hyo-Seong;Kim, Hyo-Jeong
    • 한국체육학회지인문사회과학편
    • /
    • v.54 no.1
    • /
    • pp.535-544
    • /
    • 2015
  • This study was performed to determine the effect of low-intensity resistance training with blood flow restriction (BFR) on muscle volume and strength in elderly women. Sixteen elderly women (70.9±4.6 years) were divided into low (30% 1RM) and high (75% 1RM) intense resistance training groups. Tourniquet cuff (Zimmer, Germany) for BFR was applied only to the right leg during the training period. All subjects performed unilateral leg press, leg extension and leg curl (3 sets×12 repetitions) for 10 weeks (2d/wk). Blood pressure was increased from 110 to 240 mmHg during the training period at the most proximal region of exercised leg. Muscle volume and cross-sectional area (CSA) were measured by MRI and body composition was monitored by dual-energy X-ray absorptiometry (DEXA) and isokinetic muscular strength were analyzed in both legs. The quadriceps CSA (15.2%, p<.001) and muscle volume (13.8%, p<.001) were increased in high-intense trained leg with BFR and the increased rate was highest among groups. The quadriceps CSA (9.8%, p<.001) and muscle volume (6.9%, p<.001) were increased in low-intensity training group with BFR and their increased rates were higher than control groups. The strength by exercise training was significantly improved in all groups and tended to be higher in BFR groups. These results demonstrate low-intensity resistance training with blood flow restriction could be an effective way to improve muscle volume and strength in elderly women.

Impact of Central Obesity and Physical Activity Behavior on Health-related Quality of Life among Korean Older Adults (한국 노인의 복부비만 유무에 따른 신체활동 수준 및 좌식시간과 건강관련 삶의 질의 관계)

  • Hwang, Seo-Hyeon;Yu, Mi-Seong;Jeon, Justin Y.
    • 한국체육학회지인문사회과학편
    • /
    • v.57 no.4
    • /
    • pp.375-386
    • /
    • 2018
  • Due to the rapid increase of the elderly population in Korea, there is a growing interest in 'Healthy Aging.' In this trend, it is important to identify the relationship between their lifestyle factors and quality of life. The purpose of this study was to identify the association of physical activity level, sedentary behavior and health-related quality of life (HRQoL) among Korean older adults. A total of 4,589 older adults at the Sixth and Seventh National Health and Nutrition Examination Survey was analyzed. The results showed that better HRQoL was observed among physically active older female, which was more evident among physically active female with central obesity while no such relationship was observed among older male. On the other hand, higher sedentary time was associated with lower HRQoL in both male and female subjects. Our analyses indicated that central obesity was closely related with HRQoL regardless of their physical activity levels in female subjects. Further analyses investigating association between sub-dimension of HRQoL and sub-domain of physical activity showed that higher transport physical activity was associated with better anxiety/depression score and higher sedentary time was associated with poorer score on mobility, usual activities among male and mobility, self-care, usual activity and anxiety/depression among female. Our finding suggests that physical activity level, sedentary behavior and central obesity associated with HRQoL.

A Study on Selection of Optimal Shelters according to Dam Break Scenario Based on Continuous Rainfall Event (연속호우사상기반의 댐 붕괴 시나리오에 따른 최적대피소 선정에 관한 연구)

  • Kim, Kyunghun;Lim, Jonghun;Kim, Hung Soo;Shin, Soeng Cheol
    • KSCE Journal of Civil and Environmental Engineering Research
    • /
    • v.43 no.4
    • /
    • pp.433-447
    • /
    • 2023
  • There is a growing demand for the stability of existing dams due to abnormal climate and the aging of dams. Emergency Action Plans (EAPs) for reservoir or dam failure only consider a single rainfall event. Therefore, this study simulates dam failure caused by continuous rainfall events, and proposes the establishment of EAP by selecting the optimal shelters. We define a mega rainfall event scenario caused by continuous rainfall events with 500-year frequency in the Chungju Dam watershed and estimate the mega flood. The mega flood event scenario is divided into two cases: scenario A represents the flooding case caused by discharge release from a dam, while scenario B is the case of a dam break. As a result of flood inundation analysis, the flooded damage area by the scenario A is 50.06 km2 and the area by the scenario B is 6.1 times of scenario A (307.45 km2). We select optimal shelters for each administrative region in the city of Chungju, which has the highest inundation rate in the urban area. Seven shelter evaluation indicators from domestic and foreign shelter selection criteria are chosen, and Analytical Hierarchy Process (AHP) method is used to evaluate the alternatives. As a result of the optimal shelter selection, the six shelters are selected and five are schools. This study considers continuous rainfall events for inundation analysis and selection of optimal shelters. Also, the results of this study could be used as a reference for establishment of the EAP.

Effect of word frequency in sentence reading of older adults with rich reading exposure (노인들의 글 읽기에서 나타나는 눈의 움직임 양상과 읽기 노출의 필요성)

  • Choo, Hyeree;Koh, Sungryong
    • Korean Journal of Cognitive Science
    • /
    • v.34 no.2
    • /
    • pp.67-84
    • /
    • 2023
  • In this study, Korean older adults (70-75 yrs) were divided into two groups according to the degree of reading exposure, and real-time data were collected through a reading eye movement tracking experiment. Then, overall reading patterns and word frequency ef ects were compared with two groups of older adults and younger adults (20-28 yrs). Furthermore, through the results of the eye movement tracking experiment of older adults with rich reading exposure and older adults with poor reading exposure, we tried to find out whether reading performance af ects not only changes in age but also reading exposure. As a result of the experiment, the older adults with poor reading exposure group generally had a longer fixation time and a shorter saccade than the younger adults group, and the older adults with rich reading exposure group showed the same reading patterns as the younger adults group. The word frequency ef ect was confirmed in all groups, and the fixation time was short in the order of older adults with rich reading exposure group and older adults with poor reading exposure group. In addition, an interaction ef ect was shown in the two elderly groups according to reading exposure, but no interaction could be confirmed in the dif erence between the younger adults group and the older adults with rich reading exposure group. This suggests the possibility that reading performance is not af ected by age itself, but by the reading experience of the elderly.

Development of Task Planning System for Intelligent Excavating System Applying Heuristics (휴리스틱스(Heuristics)를 활용한 지능형 굴삭 시스템의 Task Planning System 개발)

  • Lee, Seung-Soo;Kim, Jeong-Hwan;Kang, Sang-Hyeok;Seo, Jong-Won
    • KSCE Journal of Civil and Environmental Engineering Research
    • /
    • v.28 no.6D
    • /
    • pp.859-869
    • /
    • 2008
  • These days, almost every industry's production line has become automatic and this phenomenon brought a lot of benefits such as increase in productivity and economical effect, assurance in industrial safety, better quality and compatibility. However, unlike industrial production line, in construction industry, automation has number of barriers like uncertainty incidents and intellectual judgment to make ability to make solution out of it. Therefore construction industry is still demanding use of construction machine through labor. Due to this matter operational labor in construction industry is aging and fading. To solve these problem, in developed nations like Europe, US or Japan are keep researching for the automation in construction and road pavement, strengthening and some other simple operations have been worked through automation but in civil engineering site, automation research is still low despite of its importance in constructional site. For automating civil engineering operation, effective operational plan have to be set by analyzing ground information acquainted. If skillful worker apply heuristics, trial & error can be reduced with increased safety and the effective work plan can be established. Hence, this research will introduce Intellectual Task Planning System for Intelligent Excavating System's effective work plan and heuristics applied in each steps.

Hepatic/Renal Safety Evaluation of Cheongsimyeonja-tang (Qīngxīn Liánzǎo Tāng), Dodam-tang (Táodàn Tāng), Hyeolbuchukso-tang (Xuè Fǔ Zhú Yū Tāng), and Boshiniknai-tang (Bǔ Shèn Yì Nǎo Tāng) for Cerebrovascular Diseases : A Retrospective Study (뇌혈관질환 환자에 대한 청심연자탕(淸心連子湯), 도담탕(導痰湯), 혈부축어탕(血府逐瘀湯), 보신익뇌탕(補腎益腦湯)의 간기능과 신기능 안전성 평가 : 후향적 연구)

  • Min-hwa Kim;Im-hak Cho;I-rang Nam;Maria Kim;Ki-beom Ku;Se-yeon Lee;Jung-nam Kwon;In Lee;Jin-woo Hong;Young-ju Yun;So-yeon Kim;Chang-woo Han;So-jung Park;Jun-yong Choi;Hyeun-kyoo Shin
    • The Journal of Internal Korean Medicine
    • /
    • v.44 no.3
    • /
    • pp.439-454
    • /
    • 2023
  • Objectives: As Korea transitions into an aging society, the incidence of cerebrovascular disease is expected to increase. Herbal medicine is commonly used in Oriental medicine to treat cerebrovascular disease. However, there is insufficient clinical evidence to actively support the safety of herbal medicine in clinical practice. Therefore, the aim of this study was to determine the toxicity and safety of four herbal medicines (Cheongsimyeonja-tang, Dodam-tang, Hyeolbuchukso-tang, and Boshiniknai-tang) in patients with cerebrovascular disease. Methods: This study used electronic medical records to analyze patients admitted to an oriental medicine hospital from April 1, 2017, to December 31, 2020. Liver and renal function values at the time of admission and discharge were compared. Results: A total of 25 patients were included in this study. We found no significant differences in various variables, such as complete blood count, liver-renal function test, and urine, before and after the administration of the four herbal medicines. Additionally, no significant adverse events related to herbal medicine were observed. Conclusions: This study confirmed the safety of the four herbal medicines in patients with cerebrovascular disease who were hospitalized in a single Oriental medicine hospital.