• Title, Summary, Keyword: Safe life

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Development of an Educational App for Safe Dietary Life based on Elementary School Parents' Perceptions on Pesticide Residue (초등학생 학부모들의 잔류농약 인식에 기초한 안전 식생활 교육용 앱 개발)

  • Chae, Hyeon-Ja;Kim, Jeong-Weon
    • Korean journal of food and cookery science
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    • v.29 no.2
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    • pp.161-168
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    • 2013
  • The purpose of this study was to develop an educational app that informs parents of elementary students with correct information on pesticide residue based on their awareness and information needs on pesticide residue. A survey was conducted from 918 parents living in 8 different districts of Korea. The results of the survey indicated that a majority of parents felt uncomfortable with pesticide residue and wanted to have the proper information regarding it. Based on the above results, an app named 'Perfect Conquest of Pesticide Residue' consisting of 5 main menus of 'Pesticide residue, Is it safe?', 'Safe management of pesticide residue', 'Perfect removal of pesticide residue on fruits and vegetables through washing', 'Shopping without anxiety', 'Playground' and their own sub-menus was developed. When the app was applied to 30 parents using smart phones, a majority of them were satisfied with the contents of detailed information and fun activities. Therefore, this app could be utilized as an effective educational tool for the parents of elementary students by allowing them to have proper awareness on pesticide residue. Furthermore, more apps could be developed on other food risk factors to promote safe dietary life.

Effect of Grafting Cultivation on the Growth of Hot Pepper (고추 접목재배가 생육에 미치는 영향)

  • Kim Eun-Hyun;Kim Hak-Jin;Kwon Byung-Sun;Lim June-Taeg;Hyun Kyu-Hwan;Kim Do-Young;Shin Dong-Young
    • Korean Journal of Plant Resources
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    • v.18 no.1
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    • pp.78-84
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    • 2005
  • Charactertistics of growth from graft induced three stock of red pepper cultivar were analysed. R-safe rootstock was more higher and vigorous than that of the Yeok kang, Konesian hot cultivar at seedling stage and had good characteristics for grafting in the space of cut surface and the amount of sap released. Numbers of branches were more numerous in the grafted plants than those of non-grafted as grafting affected their growths in the process of branching. There was no distinct difference in plant height among the different rootstock. However the R-safe rootstock showed considerably high growth in the 41st days after grafting. Grafting was effective in the early flowering and the R-safe was the earliest in flowering because of it's good growth under the low temperature.

Policy Proposals for the Safe Living of the Rural Elderly (농촌 노인의 생활안전을 위한 정책적 제언)

  • Cho, Hee Keum;Lee, Mi Young
    • Korean Family Resource Management Association
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    • v.21 no.2
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    • pp.1-24
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    • 2017
  • The purpose of this study, which focuses on safe living as an important determinant of the quality of life for the elderly, is to provide policy proposals for their safe living in rural areas by examining their current living conditions and related policies. To examine the related policies, we analyzed government plans including: the first, second and third Basic Plan on Low Fertility and Aging Society, first implemented in 2006, the first, second and third Basic Plan for Healthy Families, also first implemented in 2006, and the first, second and third Five-year Plan for Improvement of the Quality of Life of Rural People and Regional Development of Rural Areas, first implemented in 2005. In addition to these plans, government projects concerning safe living environments were assessed. we present the following policy proposals for the safe living of the elderly in rural areas. First, integrated, customized policies are required for the rural elderly's everyday life. That is, elderly-friendly residential improvement policies are needed since accidents involving the rural elderly usually occur in their own houses. Policies should also be introduced to monitor and improve the elderly's nutritional and health status. Also considering the high proportion of elderly people in rural areas, policies must be aimed at creating elderly-friendly and family-friendly villages. Second, educational sessions for the elderly are necessary to raise their awareness of safety in everyday lives, which they often overlook.

A study on the Safe-Life Village Design for the Citizen Security (시민보호를 위한 생활안전 마을지도 설계에 관한 연구)

  • Lee, Tae Shik;Seok, Geum Cheol;Cho, Won Cheol
    • Journal of Korean Society of Disaster and Security
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    • v.6 no.3
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    • pp.43-48
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    • 2013
  • This paper focused on the continuing the citizen safety, the contributing the local economy's activation, and the improving the safe and the social walfare on the civil environment. Seoul metropolitan nominated the model village the Buggaja 2 dong of the Seodaemoon-gu for the making safe village in the 2013. It is designed the village map for the safe life, discovered the dangerous factor about the various and social facilities which is a road, a walking way, a school, a enjoy place for the children, a Thema place, the leasure place, facilities etc., and improved the model village for the incident's and accident's reduction education and training from 2011 to 2013. The results on the discovering and improving activities by the resilient safe monitoring activity, in the 2011 the village is reduced the 23 people from the 151 people to the 128 people in the dead number into the total citizen 34,000 during a year, is showed the excellent values, which the dead people reduced the 23 people in the village, which the safe-life result was over the 12.8% in the national average. For the making resilient city, for the supporting the visitors which it looks around the safe-life model village, the tracking road map is designed, and the tenth safe life factors is showed.

Fatigue Life Evaluation of Fiber Reinforced Composite Rotor Blades Considering Impact Damages (충격손상을 고려한 섬유강화 복합재 로터 블레이드의 피로수명 평가)

  • Kee, Young-Jung;Park, Jae-Hun;Kim, Sung-Man;Kim, Gi-Hun
    • Journal of Aerospace System Engineering
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    • v.14 no.spc
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    • pp.22-30
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    • 2020
  • Composite rotor blades for rotorcraft have an intrinsic vulnerability to foreign object impact from its inherent structural characteristics of insufficient strength in the thickness direction, which may easily lead to internal structure damage. Therefore, defects and strength reducing effects caused by foreign object impact should be considered in fatigue evaluation of composite blades. For this purpose, the flaw tolerant safe-life and fail-safe concepts were adopted in fatigue evaluation since 1980s, and recently those concepts have been replaced by the damage tolerance concept. In this paper, the relevant standards for fatigue evaluation are analyzed focusing on fiber reinforced composite rotor blades used in rotorcraft. In addition, fatigue evaluation procedure of composite blades considering impact damages is proposed by reviewing the practices implemented through domestic development projects.

Life Cycle Cost Analysis of Steel Bridges on Its Paint System during Safe Life Under (강교의 도장방식에 따른 안전수명간 생애주기비용분석)

  • Han, Sang-Chul;Kim, Eun-Kyum;Cho, Sun-Kyu
    • Journal of the Korean Society of Safety
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    • v.17 no.2
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    • pp.63-68
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    • 2002
  • Life Cycle Cost analysis technique is introduced to evaluate cost-effectiveness of two paint systems of steel bridges. The systems are a conventional paint system and a galvanized paint system. The all costs during safe lift such as initial cost repainting costs, disposal costs are considered for the lift cycle cost analysis. The NIST model is used and BridgeLCC 1.0 developed by the NST is utilized as the lift cycle cost analysis tool. It is concluded that, in spite of expensive initial cost, the durable paint system may be cost-effective compared with conventional paint system.

Life Evaluation of Gas Turbine Engine Disk based on Retirement for Cause Concept (Retirement For Cause 개념에 의한 가스터빈 디스크 수명의 평가)

  • Nam, Seung-Hun;Park, Jong-Hwa;Kim, Jong-Yeop
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.26 no.2
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    • pp.365-373
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    • 2002
  • For gas turbine engines, the safe life methodology has historically been used fur fatigue life management of failure critical engine components. The safe retirement limit is necessarily determined by a conservative life evaluation procedure, thereby many components which have a long residual life are discarded. The objective of this study is to introduce the damage tolerant design concept into the life management for aircraft engine component instead of conservative fatigue life methodology which has been used for both design and maintenance. Crack growth data were collected on a nickel base superalloy which have been subjected to combined static and cyclic loading at elevated temperatures. Stress analysis fur turbine disk was carried out. The program for computing creep-fatigue crack growth was developed. The residual lifes of turbine disk component under various temperatures and conditions using creep-fatigue crack growth data were estimated. As the result of analysis, it was confirmed that retirement fur cause concept was applicable to the evaluation of residual life of retired turbine disk which had been designed based on the conventional fatigue life methodology.

Comparison of Elementary School Teachers and Students on Demands for Safety Education (안전교육에 대한 초등학교 교사와 초등학생의 요구도 비교)

  • Kim, Shin-Jeong;Kang, Kyung-Ah;Song, Mi-Kyung
    • Child Health Nursing Research
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    • v.14 no.3
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    • pp.232-242
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    • 2008
  • Purpose: The purpose of this study was to develop a safety education program for elementary school students by comparing elementary school teachers and students on their demands for safety education. Method: The data were collected from 1,754 1-6th grade elementary school students and 335 elementary school teachers (6 elementary schools) using self- report questionnaires. Results: 1) The mean score for level of demand for safety education by elementary school teachers was 4.43 ({\pm}.44$) and for students, 4.01({\pm}.65$). 2) There was a significant difference in the level of demand for safety education between the elementary school teachers and students (t=-14.46, p=.000). 3) There were significant differences in the level of demand for safety education according to teachers' gender (t=-4.36, p=.000), teachers' concern about a safe life (t=5.14, p=.000), teachers' perception of a safe life (t=3.08, p=.002), students' gender (t=-3.89, p=.000), students' grade (t=5.06, p=.000), students' concern about safe life (t=13.09, p=.000), students' safe life practices (t=11.64, p=.000), students' previous experience of safety education (t=2.02, p=.045), and students' recognition of the importance of safety education (F=67.31, p=.000). Conclusion: To develop effective safety education programs for elementary school students, it is necessary to give precedence to demands and interest in safety education of the students.

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Fatigue and Damage Tolerance Evaluation of Composite Helicopter Rotor Blades (복합재 헬리콥터 로터 블레이드의 피로 및 손상허용 평가 방안)

  • Kee, Young-Jung;Paek, Seung Kil
    • Journal of Aerospace System Engineering
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    • v.8 no.3
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    • pp.41-46
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    • 2014
  • Fatigue evaluations for the rotor blades of commercial or military rotorcraft have been carried out using the safe life concept since 1950s. Particularly, in the case of a rotor blade made of a composite material, a highly reliable fatigue life could be predicted by evaluation the cumulative damage using combination of fatigue life curve and load spectrum. However, there is a limit in adequately evaluating the strength reducing phenomena caused by damages or defects generated during the manufacturing process or impact damage induced by operational usages, using only the safe life concept. In this study, the fatigue evaluation process based on the damage tolerance concept is described and illustrated by means of successful application to substantiate the retirement time of composite rotor blades.