• 대한지역사회영양학회지
• /
• 제6권3호
• /
• pp.516-526
• /
• 2001

Working towards the compression of morbidity, we attempted to find the way to contribute to desirable aging and/or healthy old age. By looking into the factors affecting nutrient intake in middle-aged adults, we sought to find ways to improve their health status, Two hundred and fifty middle-aged adults from 40 to 60 years of age residing in Seoul and its vicinity were recruited for the survey. Subjects were interviewed for general characteristics, dietary habits lifestyle, status and food intake by a trained interviewer. Two -day food record was included in addition to the 1 -day 24 hr recall. Date were analyzed for the relationship among nutrient intake, health status, socio-economic status dietary habits and lifestyle using a statistical program (SAS) Although the mean energy intake of the subjects did not reach the recommenced dietary allowances(RDA), mean protein intake was well above the RAD for both sex groups(111.2% and 129.1% for men and women, respectively) The caloric contribution of fat was 15 to 20 % of total energy intake among different groups. Riboflavin was the most deficient nutrient and its mean intake reached only 71.0% of RDA for mean This seemed to be due to the lower intake of milk and dairy products among middle-aged Koreans who are more accustomed to traditional meals. Income and exercise habit were the most important factors influencing the nutrient intake of middle-age adults. Also, BMI, smoking habit, level of education regularity of meal, and hours of sleeping influenced the nutrient intake, In conclusion, middle-age adults appeared to have similar problems with the elderly in terms of nutrient intake and this age group should to included when considering nutritionally vulnerable groups in addition to the elderly and young children. The improvement in the nutrition status of middle-age adults is even more important because that could lead into the better health the elderly.

• Journal of Ginseng Research
• /
• 제29권2호
• /
• pp.100-106
• /
• 2005

The number of reporting the effects on ginseng's physiological, pharmacological, and behavioral effects has been increased every year. Major active components of Panax ginseng, are the ginsenosides, which are mainly triterpenoid dammarane derivatives. 3-Nitropropionic acid (3-NP) is blown to induce cellular energy deficit and oxidative stress related neurotoxicity via an irreversible inhibition of the mitochondrial enzyme succinate dehydrogenase (SDH). Intraperitoneal injection of 3-NP produces striatal degeneration. Aged animals was more vulnerable to 3-NP than young animal. We used three different ages of 5-, 8-, and 26-week-old rats. 3-NP alone treatment induced striatal lesion and increased lesion volume with age-dependent manner in 5-, 8-, and 26-week-old rats by $30.2{\pm}5.8$, $v$, and $51.3{\pm}8.4mm^3$, respectively. However, pretreatment of GTS (100 mg/kg/day) before 3-NP reduced striatal lesion in 5-,8-, and 26-week-old rats by $3.15{\pm}6.1$, $8.89{\pm}1.9$, and $27.3{\pm}5.6mm^3$, respectively. Pretreatment of GTS also significantly increased survival rate in 5-week-old rats (3-NP alone: GTS +3-NP = $40.4{\pm}6.3$: $72.5{\pm}9.5\%$) than 8-week-old rats (3-NP alone: GTS + 3-NP : $13.5{\pm}5.2\%$ : $45.1{\pm}3.1\%$). In 26-week-old rats, 3-NP alone treated group died on day 18, whereas GTS +3-NP-treated group prolonged lifespan to 30 days. Thus, pretreatment of GTS before administration of 3-NP extended lifespan in all ages. The present results indicate that aged animals are more vulnerable to 3-NP and GTS pretreatment protected 3-NP-induced striatal damage in different ages of animals.

• 한국측량학회지
• /
• 제37권5호
• /
• pp.303-313
• /
• 2019

After a disaster happens in urban areas, many people need support for a quick evacuation. This work aims to develop a method for the calculation of the most feasible evacuation route inside buildings. In the methodology we simplify the geometry of the structural and non structural elements from the BIM (Building Information Modeling) to store them in a spatial database which follows standards to support vector data. Then, we apply the multicriteria analysis with the allocation of prioritization values and weight factors validated through the AHP (Analytic Hierarchy Process), in order to obtain the Importance Index S(n) of the elements. The criteria consider security conditions and distribution of the building's facilities. The S(n) is included as additional heuristic data for the calculation of the evacuation route through an algorithm developed as a variant of the $A^*$ pathfinding, The experimental results in the simulation of evacuation scenarios for vulnerable people in healthy physical conditions and for the elderly group, shown that the conditions about the wide of routes, restricted areas, vulnerable elements, floor roughness and location of facilities in the building applied in the multicriteria analysis has a high influence on the processing of the developed variant of $A^*$ algorithm. The criteria modify the evacuation route, because they considers as the most feasible route, the safest instead of the shortest, for the simulation of evacuation scenarios for people in healthy physical conditions. Likewise, they consider the route with the location of facilities for the movement of the elderly like the most feasible in the simulation of evacuation route for the transit of the elderly group. These results are important for the assessment of the decision makers to select between the shortest or safest route like the feasible for search and rescue activities.

• 한국융합학회논문지
• /
• 제7권1호
• /
• pp.49-55
• /
• 2016

대리 인증은 제 3자에게 자신의 인증 정보를 제공하여 본인 대신 인증을 받도록 하는 것으로, 패스워드와 같이 내가 기억하는 것에 기반을 둔 인증 방법은 이러한 공격에 취약하다. 바이오메트릭 인증은 사람마다 고유한 바이오메트릭 데이터를 이용하기 때문에 대리 인증의 위험을 최소화할 수 있다. 그룹 인증은 그룹 멤버들이 해당 그룹에 속해 있음을 증명하는 것이다. 전자투표, 모바일 회의와 같이 멤버의 수가 동적으로 변하는 응용에서는 그룹 상태의 변화를 실시간으로 반영하는 새로운 인증 기법이 필요하다. 본 논문에서는 바이오메트릭 인증 기반의 동적 그룹 서명 기법을 제안한다. 제안한 기법은 바이오메트릭 키 생성, 그룹 공통키 생성, 그룹 서명 생성, 그룹 서명 검증 그리고 멤버 업데이트 프로토콜로 구성된다. 제안한 멤버 업데이트 프로토콜은 기존 멤버의 공모 공격으로부터 안전하고 그룹 상태를 실시간으로 반영한다.

• Structural Engineering and Mechanics
• /
• 제90권6호
• /
• pp.577-590
• /
• 2024

Considering the Column-Supported Group Silos (CSGSs) often arranged by rows in practical applications, earthquake responses will be affected by group effect. Since group effect presenting uncertainties, establishing the analytic model and evaluating characteristics of CSGSs seems necessary. This study aimed at providing a simplified method to evaluate seismic performances of the CSGSs. Firstly, the CSGSs with different storage granule heights are used as numerical examples to derive the base shear formula for three-particle dynamic analytical model. Then, the base shear distribution coefficient is defined as the group effect index. The simplified calculation method of the group silos based on the distribution coefficients is proposed. Finally, based on the empty, half, and full granular storage conditions, the empirical design parameters for the group silos system are given by combining finite element simulation with shaking table test. The group effect of storage granule heights of group silos on its frequency and base shear are studied by comparative analysis between group silos and independent single silo. The results show that the frequency of CSGSs decreases with the increasing weight of the stored granule. The connection between the column top and silo bottom plate is vulnerable, and structural measures should be strengthened to improve its damage resistance. In case of different storage granule heights, distribution coefficients are effective to reconstruction the group effect. The complex calculations of seismic response for CSGSs can be avoided by adopting the empirical distribution coefficients obtained in this study. The proposed method provides a theoretical reference for evaluation on the seismic performances of the CSGSs.

• 수완나부미
• /
• 제12권1호
• /
• pp.89-110
• /
• 2020

Singapore and Thailand have been rapidly ageing. There has been a growing demand for eldercarers in the home-setting for which migrant domestic workers have filled the role. This paper examines the Association of Southeast Asian Nations (ASEAN) Consensus governing women migrant workers entering the eldercare sector. It argues that because the ASEAN Consensus is not legally binding, it only serves to reinforce the sovereignty of states in the treatment of migrant workers instead of member states acting in unison to ensure labour protections for this group; as a result, Singapore and Thailand do not feel the need to step up protections for this group of workers according to national labor laws and hence low-skilled women migrant workers entering the eldercare sector continue to be vulnerable to labour abuses. Thus as with globalization, the ASEAN Economic Community manifests the paradox of borders: that while states are economically interconnected and interdependent, they are simultaneously disconnected and independent from each other.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제6권2호
• /
• pp.751-765
• /
• 2012

Key establishment protocols are fundamental for establishing secure communication channels over public insecure networks. Security must be given the topmost priority in the design of a key establishment protocol. In this work, we provide a security analysis on two recent key establishment protocols: Harn and Lin's group key transfer protocol and Dutta and Barua's group key agreement protocol. Our analysis shows that both the Harn-Lin protocol and the Dutta-Barua protocol have a flaw in their design and can be easily attacked. The attack we mount on the Harn-Lin protocol is a replay attack whereby a malicious user can obtain the long-term secrets of any other users. The Dutta-Barua protocol is vulnerable to an unknown key-share attack. For each of the two protocols, we present how to eliminate their security vulnerabilities. We also improve Dutta and Barua's proof of security to make it valid against unknown key share attacks.

• 한국콘텐츠학회논문지
• /
• 제20권12호
• /
• pp.346-356
• /
• 2020

본 연구는 성매개감염병 취약 대상자의 STI 건강신념을 확인하고 STI 예방행위에 미치는 영향요인을 파악하고자 하였다. 연구대상은 관련업소, 단체 종사자 및 보건소 내소자 등 241명이며, 연구자료는 구조화된 설문지를 활용하여 우편 혹은 방문을 통한 자기기입형 설문자료를 통해 수집하였다. 자료분석은 SPSS 21.0을 사용하여 기술 통계, t-test, one way ANOVA, Pearson's correlation and multiple regression을 실시하였다. 연구결과 5점 리커트 척도에 근거하여 지각된 민감성은 2.70점, 지각된 심각성은 3.63점, 콘돔사용의 지각된 유익성은 3.82점, 콘돔사용의 지각된 장애성은 2.45점, 콘돔사용의 자기효능감 3.93점 및 STI의 예방행위는 3.51점이었다. STI 예방행위에 미치는 영향요인으로 콘돔사용의 자기효능감(��=.23, p=.003)과 콘돔사용의 지각된 장애성(��=-.15, p=.035), 교육수준(��=.16, p=.018)이 유의하였고 이들의 설명력은 17.0%이었다. 결론적으로 성매개감염병 예방을 위해서는 인식개선과 예방행위에 미치는 영향요인을 고려한 체계적인 교육 프로그램 개발이 필요하다.

• 가족자원경영과 정책
• /
• 제26권3호
• /
• pp.49-64
• /
• 2022

이 연구는 우리나라 노인들을 의료취약성 정도에 따라 네 집단으로 세분화하여 경제적, 비경제적 사유로 인한 미충족의료 경험 차이를 분석하고, 이에 따른 정책적 시사점을 도출하였다. 2018년 한국의료패널 자료를 사용하였으며, 65세 이상 노인 4,147명에 대해 분석을 실시하였다. 노인들을 세분화한 결과, 일반건강보험가입자가 79.6%, 비수급빈곤층이 13.6%, 차상위경감대상자가 1.1%, 의료급여수급자가 5.7%의 비율을 차지하였다. 분석결과에 따르면, 병의원 또는 치과진료에 대해 노인들의 12.6%는 경제적 사유로, 10.6%는 비경제적 사유로 미충족의료를 경험한 것으로 나타났다. 의료취약계층 노인의 미충족의료 경험률은 비취약계층인 일반건강보험가입자에 비해 전반적으로 높았는데, 이는 대부분 경제적 사유에 따른 경험률 차이에서 비롯된 것이었다. 경제적인 사유로 인한 미충족의료 경험률은 일반건강보험가입자가 9.8%였던 반면, 비수급빈곤층은 18.9%, 차상위경감대상자는 40.0%, 의료급여수급자는 31.5%로 큰 차이가 있었다. 다른 영향요인을 통제한 로지스틱 분석 결과, 모든 의료취약계층이 일반건강보험가입자에 비해 경제적 사유로 미충족의료를 경험할 확률이 유의하게 높았는데, 비수급빈곤층은 약 1.4배, 차상위경감대상자는 3.3배, 의료급여수급자는 2.4배 높아졌다. 반면, 비경제적 사유로 인한 경험은 일반건강보험가입자 대비 의료급여수급자의 경우에만 1.7배 증가하였고, 다른 집단에서는 유의한 차이가 없었다. 이를 바탕으로 본 연구는 의료취약계층 노인들의 필수적 의료자원 보장을 위한 정책적 시사점을 제시하였다.

• 한국도서관정보학회지
• /
• 제54권2호
• /
• pp.131-154
• /
• 2023

본 연구는 경기도 A시 도서관 사례를 중심으로 취약계층 어린이를 대상으로 시행한 찾아가는 독서프로그램의 효과를 분석하였다. A시 도서관은 방문교사를 활용하여 어린이의 수준과 흥미에 맞는 책을 비대면으로 책만 배달하거나, 대면으로 책을 읽어주고 책 배달을 함께 하였다. 2022년 프로그램 참여자는 103가정 158명으로 이 중 책 배달은 67가정 103명, 책 읽어주기는 36가정 55명이다. 취약계층 어린이와 양육자를 대상으로 사업 시작과 종료 시기에 독서 효과 측정지표를 설문으로 조사하여 비교 분석하였고, 방문교사와 인터뷰를 하였다. 분석결과 책 배달과 책 읽어주기 중 어린이의 수준과 흥미를 파악하고 상호작용이 큰 책 읽어주기의 효과가 높았다. 연령상으로 독서경험을 쉽게 습득할 수 있는 유아가 초등학생보다 독서 효과가 더 좋았다. 계속 참여집단보다 신규 참여집단을 대상으로 한 프로그램이 약간 더 효과적이었다. 이외에 프로그램 시행 후 독서 흥미, 독서 태도, 독서환경, 독서 상호작용, 자아존중감, 사회성, 언어능력, 독서능력, 자기주도적 학습능력, 도서관 이용률 등에서 향상되었다.