• Title/Summary/Keyword: safe behavior

Search Result 588, Processing Time 0.034 seconds

Drinking behavior survey of university students in Jeju for the safe campus life (안전한 대학생활을 위한 제주지역 대학생들의 음주행동연구)

  • Kim, Hyo-Sil;Lee, Young-Ah;Kim, Soo-Jin;Chae, Soo-Gyung;Lim, Jin-Hyung
    • The Korean Journal of Emergency Medical Services
    • /
    • v.20 no.2
    • /
    • pp.127-144
    • /
    • 2016
  • Purpose: The purpose of this study was to investigate the drinking behavior of university students in Jeju for the safe campus life. Methods: A self-reported questionnaire was completed by 549 students in 4 universities in Jeju. The data were analyzed by t-test, one way ANOVA, and multiple regression using SPSS Win 19.0 program. The questionnaire instruments consisted of Alcohol Use Disorders of Identification Test-Korea (AUDIT-K) and Life Stress Scale for College Students adapted by Chon. Results: The alcohol consumption rate of participants accounted for 96.2%. The binge drinking rate in female students were 33.9% and that in male students was 29.5%. The result by scoring AUDIT showed that 30.7% of participants were normal drinking group, 36.0% were hazardous drinking group, and 33.3% were estimated alcohol abuse group. The average score of stress was 1.45 by Likert 4 point scale. The female students tended to have more stresses than male. The most important influencing factors on drinking behavior were the first alcohol drinking(${\beta}=-.250$, p< .001), gender(${\beta}=.202$, p< .001), and relationship problem(${\beta}=.116$, p < .05). Conclusion: The drinking rate of university students revealed higher than that in other age groups. So the early systematic education is strongly recommended to prevent the physical and mental side effects.

A Study on the strain hardening behavior of hydroformed Engine Cradle (액압성형공정을 적용한 엔진크레들의 가공 경화 특성 연구)

  • Park, H.K.;Yim, H.S.;Yi, H.K.;Kim, K.S.;Moon, Y.H.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
    • /
    • 2008.10a
    • /
    • pp.154-157
    • /
    • 2008
  • It is important to know the variations of the mechanical properties in the hydroforming process for the safe and durable design purposes. In this study, strain hardening behavior during hydroforming has been investigated by hydroforming of engine cradle as a model process. The variation of mechanical properties such as local hardness and flow stress were used as an index of strain hardening during respective processes. By using the inter-relationships between hardness-flow stress-effective strain at variable pre-strains, the strain hardening behavior during hydroforming has been successfully analyzed. The comparison of predicted hardness with measured hardness confirmed that the methodology used in this study was feasible and the strain hardening behavior can be quantitatively estimated.

  • PDF

Analysis of the Effect of Wind on the Dynamic Behavior of High Speed Train (바람이 고속전철의 동적 안전성에 미치는 영향 분석)

  • 김영국;박찬경;박태원;배대성
    • Transactions of the Korean Society for Noise and Vibration Engineering
    • /
    • v.11 no.8
    • /
    • pp.349-356
    • /
    • 2001
  • The dynamic behavior of high speed train is very Important because the railway should be safe and Is satisfied tilth the rode comfort of passengers. The train is composed of many suspension components. such as 1st springs, 1st dampers, 2nd springs and 2nd dampers, that have an influence on the dynamic characteristics of high speed train. Also, the wheel/rail shapes, the track conditions and geometry and many environmental factors, such as rain, snow and wind. affect the dynamic behavior of high speed train. This paper reviews the effect of wind and track conditions on the dynamic behavior of high speed train. The VAMPIRE program Is used for this simulation. The result of simulation shows that the high speed train should not be operated when the wind velocity is beyond 34.5 m/sec.

  • PDF

A Study on the Evaluation Method of the Building Safety Performance and the during Building Fires with Computer Prediction of Occupants′ Egress Behavior Simulation (컴퓨터시뮬레이션에 의한 피난행태예측 및 안전성능평가 방법에 관한 연구(I))

  • 최원령;이경회
    • Fire Science and Engineering
    • /
    • v.3 no.1
    • /
    • pp.19-28
    • /
    • 1989
  • It has been recognized that the escape facility planning is very important for effective evacuation of accupants on fire event. The ultimate goal of the escape facility planning is to evacuate occupants rapidly from building fires to the safe areas. In fire event, occupants usually gather, utilize and finally act upon information about state transient of building fire system, which is consisted of components of fire, building and accupant during the ralatively short period of the fire event. That is, occupants' egress behavior is largely dependent upon building fire system. Therefore, comprehensive study for the relationship between building fire system and occupants' egress behavior is needed. This study aims to suggest the pre -occupancy evaluation method of the life safety performance for the architectural design based on prediction of occupants' egress behavior during building fires with computer simulation.

  • PDF

Consideration of human factors in industrial safety

  • 박민영
    • Proceedings of the ESK Conference
    • /
    • 1995.04a
    • /
    • pp.111-114
    • /
    • 1995
  • As modern industrial technologies progress, critical incidents (both conventional and new) occur as well. Although majority of these safety incidents are human-related, or human factors problems, industrial systems and/or occupational safety operations are often designed without seriously considering important roles of human factors in industrial safety. The purpose of this paper is to show how a human factors approach can contribute to industrial safety. The paper introduces a systems safety concept with some useful analysis techniques for proactively preventing human-related safety problems. A behavior-based safety analysis approach to modify hyman behavior is suggested to reduce unsafe behavior and promote safe behavior. Finally, a sound human factors/ergonomics program is recommended for management to establish a hazard-free work environment. Some current and future research issues are discussed.

  • PDF

The Relation between Human Behavior and Safety in the Collision Avoidance Situation

  • Park, Jung-Sun;Kobayashi, Hiroaki;Yea, Byeong-Deok
    • Journal of Navigation and Port Research
    • /
    • v.27 no.6
    • /
    • pp.611-618
    • /
    • 2003
  • It can be said that the relationship between the maneuvering ability of operators and the navigational environment affects the safe degree of navigation in the collision avoidance situation. In order to reduce the occurrence probability of accident and to maintain the safety, it is necessary to clarify the relationship between human behavior and navigational environment. In this study, therefore, we analyzed and discussed the relationship between the maneuvering characteristics and the safety focused on human behavior as a fundamental factor of marine accidents using ship handling simulator and questionnaire. As a result, we concluded that navigational environment changes variously and the maneuvering ability of operators also varies with the navigational environment, and the ship handling characteristics strongly affect the occurrence probability of accident.

A Navigation Algorithm for Autonomous Mobile Robots using Artificial Immune Networks and Fuzzy Systems

  • Kim, Yang-Hyun;Lee, Dong-Je;Lee, Min-Jung;Choi, Young-Kiu
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 2001.10a
    • /
    • pp.134.6-134
    • /
    • 2001
  • The purpose of navigation algorithm is to reach a given target point without collision with obstacles while an autonomous mobile robot is navigating. To achieve a safe navigation, this paper presents an effective navigation algorithm for the autonomous mobile robot equipped with ultrasonic sensors in unknown environments. The proposed navigation algorithm consists of an obstacle-avoidance behavior, a target-reaching behavior and a fuzzy-based decision maker. In the obstacle-avoidance behavior and the target-reaching behavior, artificial immune networks are used to select a proper steering angle, make the autonomous mobile robot avoid obstacles and approach a given target point. The decision maker using fuzzy inference systems weights the steering angles selected ...

  • PDF

A Study on the Dynamic Behavior of Eddy Current Braking System for Korean High Speed Train (고속전철의 와전류 제동장치 동적 거동특성 연구)

  • 박찬경;최강윤;현승호;곽수태
    • Proceedings of the KSR Conference
    • /
    • 2001.05a
    • /
    • pp.147-154
    • /
    • 2001
  • Dynamic behavior of high speed train is very important because the high speed train should be safe and satisfied with the ride comfort. An eddy current brake system is mounted on trailer bogie and wheelset. The eddy current braking force longitudinally exerts on the articulated trailer bogie and the attraction force vertically exerts on the wheelset. Because a frame of eddy current brake system is flexible, these forces generate the vertical vibration at middle point of the frame. Also, the vibration change the vertical clearance between an electromagnet and top of rail which affect the magnitude of braking and attracting forces. Therefore, the dynamic behavior of the eddy current braking system must be predicted for design the dynamic characteristic of its mounting system when normally operate on rail which have irregularity. Vampire program is used for Prediction of the dynamic behavior of an eddy current braking system.

  • PDF

Analysis of Dynamic Behavior of the High Speed Train by External Force due to the Gust (동적거동 관점에서의 돌풍에 대한 고속전철 운행속도 영향 연구)

  • Park, C.K.;Kim, Y.G.;Choe, K.Y.
    • Proceedings of the KSME Conference
    • /
    • 2001.06b
    • /
    • pp.495-500
    • /
    • 2001
  • The dynamic behavior of high speed train is very important because it should be safe and is satisfied with the ride comfort of passengers. The railway is composed of many suspension components-1st springs, 1st dampers, 2nd springs, 2nd dampers etc- that have an influence on the dynamic characteristics of high speed train. Also, the wheel/rail shapes, the track condition and geometry and many environmental factors-rain, snow, wind etc-are affected the dynamic behavior of high speed train. This paper is reviewed the effect of wind(gust) on the dynamic behavior of high speed train. Vampire program is used for this simulation. The result of simulation shows that high speed train should not be operated when the gust speed is beyond 34.5m/sec.

  • PDF

A Study on the Influence of Navigational Environment on Mariner's Behavior for Collision Avoidance

  • Park, Jung-Sun;Yea, Byeong-Deok
    • Journal of Navigation and Port Research
    • /
    • v.32 no.2
    • /
    • pp.127-132
    • /
    • 2008
  • The safety degree of navigation for collision avoidance is closely related with the combination between mariner's behavior and navigational environment. The condition of navigational environment is mainly decided by navigable waters, ship traffic, rule of road, sea state, weather and so on. Especially, the condition of navigable waters and ship traffic in navigational environment are ones of the important factors to attain safe navigation when mariners are underway and crossing, head on or overtaking situation. Thus this paper is to analyze the characteristics of mariner's behavior for collision avoidance caused by ship traffic and navigable waters by analyzing the contents of questionnaire and the results of international collaborative research. As a result, it can be concluded that the density of ship traffic and the area of navigable waters affect mariner's ship handling for collision avoidance.