• Title/Summary/Keyword: Physical Environmental Factors

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A Basic Study on Influential Factors of Building Damages According to Hurricane by Using Correlation Analysis (상관분석을 통한 태풍에 따른 건축물 피해액의 영향인자 도출)

  • Kim, Boo-Young;Yang, Seongpil;Kim, Sangho;Son, Kiyoung
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2014.05a
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    • pp.164-165
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    • 2014
  • In the case of U.S, various damage prediction models of buildings from natural disasters have been used widely in many organizations such as insurance companies and governments. In South Korea, although studies regarding damage prediction model of hurricane have been conducted, the scope has been only limited to consider the property of hurricane. However, it is necessary to consider various factors such as socio-economic, physical, geographical, and built environmental factors to predict the damages. Therefore, as a basic study on a damage prediction model development of buildings, this study is to analyze the correlation between various factors related to hurricane. The findings of study can be utilized to develop for predicting the damage of hurricane on buildings.

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Deriving Factors Affecting Energy Usage for Improving Apartment Energy Consumption Evaluation (공동주택 에너지 사용량 평가 개선을 위한 에너지 사용량 영향 요인 도출)

  • Eum, Mi-Ryeong;Hong, Won-Hwa;Lee, Ji-Ae
    • Journal of the Architectural Institute of Korea Structure & Construction
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    • v.34 no.7
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    • pp.27-34
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    • 2018
  • The energy consumption of apartment houses is affected by various factors. The criteria for assessing current energy usage are area, region and purpose. The purpose of this study is to obtain the reliability of the method of evaluating the existing energy consumption certificate and to derive usable evaluation factors according to the correlation of factors affecting energy consumption. The research process collects energy usage data for apartment houses in Daegu and calculates statistical results through correlation analysis and multiple regression analysis. As a result, it was found that the power energy is influenced by the yearly factor of physical characteristics, and the heat energy and total energy usage are influenced by the energy source which is energy characteristic factor.

Ocean Surface Current Retrieval Using Doppler Centroid of ERS-1 Raw SAR Data

  • Kim Ji-Eun;Kim Duk-jin;Moon Wooil M.
    • Proceedings of the KSRS Conference
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    • 2004.10a
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    • pp.590-593
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    • 2004
  • Extraction of ocean surface current velocity offers important physical oceanographic parameters especially on understanding ocean environment. Although Remote Sensing techniques were highly developed, the investigation of ocean surface current using Synthetic Aperture Radar (SAR) is not an easy task. This paper presents the results of ocean surface current observation using Doppler Centroid of ERS-1 SAR data obtained off the coast of Korea peninsula. We employed the concept, in which Doppler frequency shift and the ocean surface current are closely related, to evaluate ocean surface current. Moving targets cause Doppler frequency shift of the back scattered radar waves of SAR, thus the line-of-sight velocity component of the scatters can be evaluated. The Doppler frequency shift can be measured by estimating the difference between Doppler Centroid of raw SAR data and reference Doppler Centroid. Theoretically, the Doppler Centroid is zero; however, squinted antenna which is affected by several physical factors causes Doppler Centroid to be nonzero. The reference Doppler Centroid can be obtained from measurements of sensor trajectory, attitude and Earth model. The estimated Doppler Centroid was compensated by considering the accurate attitude estimation of ERS-1 SAR. We could verify the correspondence between the estimated ocean surface current and observed in-situ data in the error bound.

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Statistical analysis of social factors and lighting physical quantities to present CPTED guideline (CPTED 기준 제시를 위한 사회적 요인과 조명물리량의 통계 분석)

  • Kim, Kwang Hoon;Oh, Jin Woo;Hwang, Jun Kwon;Jeon, Soo Joeng;Yoon, Geun Young
    • Land and Housing Review
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    • v.10 no.3
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    • pp.17-22
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    • 2019
  • In recent years, crime has been steadily increasing, causing not only economic damage but also aggravating the social atmosphere. The CPTED(Crime Prevention Through Environmental Design) guideline, which is an environmental crime prevention design technique, reduces the possibility of crime by implementing a proper defensive design plan through appropriate lighting design in the city and reduces the fear of crime. Among the various principles of CPTED, the proper use of street lamps and CCTV is considered to be an important factor in enabling natural surveillance. In this study, the authors identified and quantified the current status of the installation of street lamps and CCTV in each autonomous district of Seoul. The physical quantity of lighting and social factor quantified from light lamps and CCTV data, respectively, were expected to support the guidelines presented by CPTED. Therefore, we conducted statistical analysis based on quantified values and found that street lamps and CCTV had a statistically significant relationship with crime rate. In addition, the correlation between the safety index and the crime rate, calculated by dividing the number of street lamps and CCTVs by area, was also analyzed and an R2 value of 0.647 was confirmed.

Depressive stress related symptoms and associated factors among marriage immigrant women: Focused on risk factors and protective factors (결혼이주여성의 우울 스트레스 증상과 그 영향 요인: 위험 요인과 보호 요인을 중심으로)

  • Cho, Wonsup;Yoo, Seunghyun
    • Korean Journal of Health Education and Promotion
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    • v.34 no.1
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    • pp.47-65
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    • 2017
  • Objectives: This paper aims to identify depressive or stress related symptoms and its associated risk and protective factors among marriage immigrant women in Korea. Methods: The study participants were 490 immigrant wives from '2012 Survey of Foreign Residents in Korea'. The participants completed self-administered questionnaires on socio-demographics, health status, family members' related factors, and other environmental factors. Results: Difficulties on child nursing, finance, family conflict, and experience of physical or verbal violence were significant risk variables to the depressive stress related symptoms. Family life satisfaction, discussion about troubles with Koreans, healthy status, social trust, and discussion about troubles with people from home country were the significant protective variables to mental health. However economic activities were not protective factors but risk factors. Conclusions: Mental Health promotion programs for marriage immigrant women and their family members need to consider the family and community related protective mental health factors and develop supportive system with pre-existing programs and policy modification.

A Study on Assessment and Classification about Rural Landscape Resources - Centered on Comprehensive Development Project of Rural Village - (농촌경관 보전 및 관리를 위한 경관자원 분류 및 평가에 관한 연구 - 농촌마을종합개발사업을 중심으로 -)

  • Lee, Dong-Kun;Ok, Ju-Hee;Hong, Chnn-Sun;Youn, So-Won;Park, Chang-Sug;Yoo, Heon-Seok
    • Journal of Korean Society of Rural Planning
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    • v.11 no.2 s.27
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    • pp.21-34
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    • 2005
  • The objective of this study is to suggest a planning direction for the management and conservation of a rural landscape. For suggesting the planning direction, this study was classified rural landscape resources based on spatial type to understand the assessment of rural landscape. This study examined literature reviews and site investigations for collecting the data on the resources of a rural landscape to maintain rurality. First above all, it was classified into physical and non-physical resources. Non-Physical resources include elements such as inhabitants' will, leaders' will and the software. It is also to reflect all these factors on the planning. Next, this study classified the resources of a landscape into artificial and natural resources and applied these resources to rural areas which were divided into five types: industry area, life area, natural landscape area, program area and human behavior area. The pictures obtained from this field survey were used for a questionnaire survey to understand the value of a rural landscape. The contents of questionnaire survey were divided into two parts: the presentation condition of a rural land-scape and assessment of a rural landscape. Especially, the value of a rural landscape was divided into the ecological value, socio-cultural value and holistic value.

Associations between Work-Related Musculoskeletal Pain, Quality of Life and Presenteeism in Physical Therapists (물리치료사의 업무관련성 근골격계 통증, 삶의 질과 프리젠티즘의 관계)

  • Bae, Young-Hyeon;Lee, Jong-Hoon;Yoo, Hyeon-Ju;Kim, Dong-Eon;Lee, Bo-Ra;Kim, Yun-Hee;Ha, Hyun-Geun
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.22 no.1
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    • pp.61-72
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    • 2012
  • Background: The purpose of this study was to analyze the associations between physical therapists' work-related musculoskeletal pain, quality of life (QoL), and presenteeism. Methods: Self-reported questionnaires were given to 402 physical therapists in Korea. Variables examined included the prevalence of pain sites related to work, pain intensity, pain pattern, pain frequency, pain duration, pain rating score (PRS), general characteristics, QoL, and presenteeism. Results: Of the 314 physical therapists who responded, 251 (79.9%) reported work -related musculoskeletal pain in at least one body part. The most affected regions included the wrist and hand (21.0%), shoulder (19.6%), and lower back (19.1%). On average patients, QoL and presenteeism differed significantly between physical therapists who reported pain and those who did not (P < 0.05). QoL showed a negative correlation with the work-related musculoskeletal pain (P < 0.01) and presenteeism (P < 0.01), while the presenteeism and work-related musculoskeletal pain showed positive one(P < 0.01). Factors influencing a physical therapist's QoL included presenteeism, Working venues (Convalescent hospital), Work status (Contra ct worker) and professional experience, while the presenteeism included QoL, work status (Intern), PRS, working venues (Convalescent hospital), Area of specialty (Pediatrics), age, sex and working hour. Conclusions: Results show that physical therapists appear to be at a higher risk for work-related musculoskeletal pain. Therefore, administrators need to use the intervention strategies to manage the presenteeism and QoL of physical therapists.

Mathematical Description and Prognosis of Cell Recovery after Thermoradiation Action

  • Komarova, Ludmila N.;Kim, Jin-Kyu;Petin, Vladislav G.
    • Korean Journal of Environmental Biology
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    • v.26 no.1
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    • pp.1-7
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    • 2008
  • A mathematical model for the synergistic interaction of physical and chemical environmental agents was suggested for quantitative prediction of irreversibly damaged cells after combined exposures. The model took into account the synergistic interaction of agents and was based on the supposition that additional effective damages responsible for the synergy are irreversible and originated from an interaction of ineffective sublesions. The experimental results regarding the irreversible component of radiation damage of diploid yeast cells simultaneous exposed to heat with ionizing radiation ($^{60}Co$) or UV light (254 nm) are presented. It was shown that the cell ability of the liquid holding recovery decreased with an increase in the temperature, at which the exposure was occurred. A good correspondence between experimental results and model prediction was demonstrated. The importance of the results obtained for the interpretation of the mechanism of synergistic interaction of various environmental factors is discussed.

Effects of the Recognition of Business Information Protection Activities in Ranks on Leaks of Industrial Secretes (직위에 따른 기업정보보호활동인식이 산업기밀유출에 미치는 영향)

  • Choi, Panam;Han, Seungwhoon
    • Journal of the Society of Disaster Information
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    • v.11 no.4
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    • pp.475-486
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    • 2015
  • The objective of this study is to analyze control factors in protecting activities of business information that affects the effects of protecting leaks of industrial secretes during business security works in the ranks of staffs. A regression analysis was implemented by 36 items of protecting activities of information and 10 items of preventing industrial secretes for a total of 354 users and managers who use internal information systems in governments, public organizations, and civilian enterprises. In the recognition of protecting activities of business information that affects the prevention of controlling industrial secretes, clerks showed recognitions in physical control, environmental control, and human resource control, and software control and assistant chiefs showed recognitions in hardware control and environmental control. Also, ranks of department managers and higher levels represented recognitions in security control activities. It showed that clerks, assistant chiefs, and above department managers show effects of technical control factors on protecting activities of industrial secretes but section chiefs represent system control factors in preventing industrial secretes.

A Study on Importance of Assessment Factors and Indicators of Natural Ecosystem for Environmentally Friendly Land Conservation (환경친화적 국토보전을 위한 자연생태계 평가요인 및 평가지표의 중요도에 관한 연구)

  • You, Ju-Han;Park, Kyung-Hun;Jung, Sung-Gwan
    • Journal of Environmental Impact Assessment
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    • v.14 no.4
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    • pp.165-177
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    • 2005
  • This study was carried out to offer the basic methodology of the system and model to objectively assess the natural ecosystem for environmentally friendly land conservation and present the alternative plan on establishing the environmental policy. The results of this study were as follows. We selected four assessment factors associated with biotic, abiotic, qualitative, and functional factors. Also, there were extracted fifty-six indicators including density, total nitrogen, hemeroby degree, and goods production. The assessment factor showed that biotic one was very important. The importance of indicators were analyzed that rare and endangered plant was important in biotic factor, in case of abiotic, qualitative, and functional factors, organic matter, landscape diversity, and conservation of ecosystem were greatly important. The results of factor analysis on the characteristics of indicators, classified biotic factor into six factors including a structural one, abiotic factor as a soil and physical one, qualitative factor as five ones including hierarchical one, and functional factor as public and conservational one. In the results of analysis on assessment model, R-square of biotic factor was 51.7%, those of abiotic, qualitative, and functional one were each 58.4%, 44.2%, and 39.3%, and statistical problem was no existence. In future, to develop the assessement model and methodology of sustainable natural ecosystem, we will have to achieve the integrated model and grouping by assessment factor.