• Title, Summary, Keyword: Aging IT foundation

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Burst strength behaviour of an aging subsea gas pipeline elbow in different external and internal corrosion-damaged positions

  • Lee, Geon Ho;Pouraria, Hassan;Seo, Jung Kwan;Paik, Jeom Kee
    • International Journal of Naval Architecture and Ocean Engineering
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    • v.7 no.3
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    • pp.435-451
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    • 2015
  • Evaluation of the performance of aging structures is essential in the oil and gas industry, where the inaccurate prediction of structural performance can have significantly hazardous consequences. The effects of structure failure due to the significant reduction in wall thickness, which determines the burst strength, make it very complicated for pipeline operators to maintain pipeline serviceability. In other words, the serviceability of gas pipelines and elbows needs to be predicted and assessed to ensure that the burst or collapse strength capacities of the structures remain less than the maximum allowable operation pressure. In this study, several positions of the corrosion in a subsea elbow made of API X42 steel were evaluated using both design formulas and numerical analysis. The most hazardous corrosion position of the aging elbow was then determined to assess its serviceability. The results of this study are applicable to the operational and elbow serviceability needs of subsea pipelines and can help predict more accurate replacement or repair times.

A New Form of Nondestructive Strength-Estimating Statistical Models Accounting for Uncertainty of Model and Aging Effect of Concrete

  • Hong, Kee-Jeung;Kim, Jee-Sang
    • Journal of the Korean Society for Nondestructive Testing
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    • v.29 no.3
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    • pp.230-234
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    • 2009
  • As concrete ages, the surrounding environment is expected to have growing influences on the concrete. As all the impacts of the environment cannot be considered in the strength-estimating model of a nondestructive concrete test, the increase in concrete age leads to growing uncertainty in the strength-estimating model. Therefore, the variation of the model error increases. It is necessary to include those impacts in the probability model of concrete strength attained from the nondestructive tests so as to build a more accurate reliability model for structural performance evaluation. This paper reviews and categorizes the existing strength-estimating statistical models of nondestructive concrete test, and suggests a new form of the strength-estimating statistical models to properly reflect the model uncertainty due to aging of the concrete. This new form of the statistical models will lay foundation for more accurate structural performance evaluation.

Effects of Harvesting Time, Aging Period and Extracting Temperature of Wild Green Tea (Camell sinesis) Leaves on Physiological Activity of Don Tea (찻잎의 수확시기, 돈차의 숙성기간 및 추출온도가 돈차의 생리활성에 미치는 영향)

  • Park, Yong-Seo;Ryu, Hyeun-Hee;Lee, Mi-Kyung;Heo, Buk-Gu
    • The Korean Journal of Community Living Science
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    • v.19 no.3
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    • pp.365-371
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    • 2008
  • This study was conducted to determine the potent physiological activity of traditional wild tea ("Don tea"; coin-shaped tea) as affected by different harvesting times, aging periods and extracting temperatures, No difference in anti-oxidative activities in the harvesting time and extracting temperature of tea leaves was observed. However, short aging periods of Don tea showed high ABTS {2-2-azonobis (3-ethylbenzothiazolin-6-sulphonic acid)} activity, ranging from 71.52 to 79.96%. DPPH (${\alpha},\;{\alpha}-diphenyl-{\beta}-picryl-hydrazyl$) radical scavenging activity of Don tea was 71.10 to 91.40%. Especially, longer aging period and an extracting temperature of $100^{\circ}C$ showed higher DPPH radical scavenging activity. With longer aging periods and an extraction at $90^{\circ}C$, nitrite radical scavenging activity of Don tea ranged from 74.04 to 94.92%. On the other hand, angiotensin 1-converting enzyme (ACE) inhibition activity of Don tea was 59.77-81.97%. It showed higher activity when harvested in June and August, aged for longer periods, and extracted at $100^{\circ}C$. These results suggested Korean traditional Don tea exhibited the highest physiological activity when aged over 8 months.

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Activation plan of community care focused on a municipal hospital (시립병원을 중심으로 한 커뮤니티 케어 활성화 방안)

  • Noh, Jin-Won;Lee, Yejin;Kim, Jae-Hyun;So, Ye-Kyoung;Hong, Hyun-Suk;Lee, Yunhwan
    • Korea Journal of Hospital Management
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    • v.24 no.3
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    • pp.38-47
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    • 2019
  • Purposes: Rapid aging and increase of high chronic diseases of the elderly are increasing the needs for expanding elderly care beyond the concept of treatment in medical institutions. This study is to discuss the core values, functions, and roles of municipal hospitals and suggest a suitable community care model. Methodology: The survey was collected twice derived from the domestic expert groups. This study analyzed experts' responses using Delphi method and Analytic Hierarchy Process, using Microsoft Excel 2016. Findings: Among the core values of the municipal hospitals, it was shown that community linkage had the highest priority. The publicity had the highest priority among the functions and roles of the municipal hospitals. In the community care models presented in this study, the model focused on 'Community Care Integration Center' showed highest relevance, suitability and applicability. Practical Implications: This study suggested three different community care models and derived the most suitable model for community care, which is focused on the municipal hospitals. It suggested effective application of the community care model to promote community care in each community.

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The Musculoskeletal Tumors of Werner's Syndrome (워너 증후군에 발생하는 근골격계 종양)

  • Lee, Sang-Hoon;Suh, Sung-Wook;Yoo, Kwang-Hyun;Kim, Han-Soo;Ishikawa, Yuichi;Goto, Makoto
    • The Journal of the Korean bone and joint tumor society
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    • v.8 no.3
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    • pp.69-75
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    • 2002
  • Werner's syndrome is a rare autosomal recessive disorder manifesting as premature aging. It is also known to be characterized by a high frequency of malignant tumors, especially sarcomas. However, Werner's syndrome may be not only a premature aging disease but also a cancer syndrome, because the malignant tumors in these patients are different from those of normal population with respect to involved site, histological type, and age of onset. Recent studies found Werner's syndrome was caused by a mutation of Werner helicase suggesting that WRN helicase may participate in metabolism and repair of DNA. And a dysfunction of WRN helicase may induce the genomic instability causing somatic mutations. Further studies of Werner's syndrome associated with sarcoma might give much informations about the normal aging process and the pathogenesis of sarcomas.

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A Study on the Elderly-Friendly Analysis of an Apartment by the Barrier Free Guidelines for the Elderly Housing (고령자 주택 설계지침에 의한 아파트의 고령친화도 연구)

  • Lee, Teuk-Koo;Lee, Ho Sung
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.15 no.3
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    • pp.9-20
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    • 2009
  • Today, as proved in many foreign developed countries, the concept of 'Aging in Place' is the most desirable goal of welfare policy for an aging society. While multi-family housing is the most representative form of residence in Korea, it has not actively reflected convenient space lay-out for the elderly and barrier-free designs. As a foundation for the planning of elderly-friendly multi-family housing, this study suggested the comparative analysis of the five domestic design guidelines for elderly housing so as to apply the elderly-friendly flexibility for apartment units. In result, the most importantly treated items and factors of the silver house guidelines were analyzed, and based on which ten unit houses of domestic apartment housing were evaluated in order to find out the most barrier-like spaces and factors for the present domestic apartment housing to reflect flexibility as elderly housing. Finally, the way to resolve the problem was suggested as a conclusion.

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Shaking Table Test for an Evaluation of the Limit State Capacity of an Anchor Foundation in the case of a Seismic Event (지진시 앵커기초의 한계성능 평가를 위한 진동대 실험)

  • Kim, Min-Kyu;Choi, In-Kil;Kwon, Hyung-O
    • Journal of the Earthquake Engineering Society of Korea
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    • v.14 no.5
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    • pp.23-31
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    • 2010
  • In this study, a shaking table test was performed for the evaluation of the failure capacity of an anchor foundation system in the case of an aged condition. For the shaking table test, three kinds of specimens were manufactured as follows: 1) a non-damaged anchor; 2) a specimen with cracks running through the anchor; and 3) a specimen with cracks along the expected corn-shape fracture away from the anchor. A dynamic characteristic was determined through a measurement of the frequency response function (FRF), and the seismic capacity was evaluated by using a shaking table test. Failure capacities were calculated using an acceleration response and it was compared with the anchor design code.

Research about senior citizen IT start-up education linking the IoT (IoT(사물인터넷)를 연계한 고령층IT창업 교육에 관한 연구)

  • Kim, Ki-hyuk;Ahn, Gwi-Im;Lim, Hwan-Seob;Jung, Deok-Gil
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.19 no.11
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    • pp.2710-2716
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    • 2015
  • Startup in the aging society is much harder than finding employment. However, we did an experimental research that the elderly are able to develop in the field of IoT via this education. Through this IT startup education, those people who can do develop and implement and they are able to start new business by develop new item. Installing education between hardware and software about Arduino and Scratch's methods have great effect on IT startup education for the elderly before solving problem which have existing programming education. While the IT startup education through IoT is more difficult subject compared to general education subject, this paper shows an easily accessible research outcome for the elderly through startup education. This paper proved that practical uses through the results.

The Effects of Preparation for Old Age of the past on Activity of the elderly: The mediating effect of Psycho-Social resources (과거 노후준비가 노년기의 활동성에 미치는 영향 : 심리사회적 자원의 매개효과)

  • Shin, Soo-Min;Kim, Dongbae
    • Korean Journal of Social Welfare Studies
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    • v.44 no.3
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    • pp.57-83
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    • 2013
  • There has neither been enough research on how to approach the concept of active aging through an integrated view nor an examination to verify the relationship between preparation for old age and active aging in later life. Therefore, this research aims to verify that the elderly, who have prepared for their later life, affected their active aged life. In addition, by setting up self-efficacy and social support as mediator in the research model, this paper looks into the psycho-social resource mechanism of the relationship in depth. In order to verify the correlation of two variables, the Seoul welfare panel data, a mediating model structured by psycho-social resources created by Seoul welfare foundation in 2010, was used. The total sample size was a group of 1,492 elders aged over 65. When it came to our research methods, structured equation analysis was applied to verify the mediating effect and theoretical background. The results revealed that physical preparation, financial preparation, social preparation and leisure preparation directly affected their active aging level positively, thus, psycho-social resources showed a partial mediating effect between preparation for old age of the past and active aging level. The research implications are as follows. First, this research makes an effort to approach the concept of preparation for old age with an integrated perspective through making a construct by entire preparation types. Second, it will attempt to verify the relationship between preparation for old age in the past and active aging in terms of multi-dimension is meaningful. Third, this research reveals the function of psycho-social resource, self-efficacy and social support within the relationship. As far as the partial mediating effect is concerned, preparation for old age education for the middle-aged class should be modified as a decent field to enhance of the elderly.

Research on Heart Rate Sensing Clothing Design for Seniors Based on Universal Fashion (유니버설 패션에 기반한 시니어 심박측정 의류 디자인 연구)

  • Koo, Hye Ran;Jeon, Dong Jin;Lee, Joo Hyeon
    • Fashion & Textile Research Journal
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    • v.19 no.6
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    • pp.692-700
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    • 2017
  • The number of elderly citizens has risen in Korea and resulted in an aging society. Correspondingly, the social interest in the aging population has escalated immensely; however, research or product development on the quality of life for seniors has shortcomings. Healthcare smart clothing is required to help the elderly with changes and weaknesses that follow aging; however, there is unfortunately insufficient amounts available. This study explores the feasibilities of smart clothing for seniors based on a universal design. Based on previous research, we analyzed the universal design theory, body shape characteristics and design requirements for seniors, and heart rate measurement method. The design is different according to body shape and body shape is different between sex, age, and body race; therefore, subjects were limited to 70-74 year old Korean males in this study. This study proposes a guideline for heart rate sensing clothing that satisfies the 'universal design' aspects as well as the functionality of heart sensing, senior's physical characteristics and needs. It has broadened the range of smart clothing, which was once limited to the younger generation and provided a foundation for the development of specialized smart clothing for seniors.