• 한국응급구조학회지
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• 제15권3호
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• pp.31-44
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• 2011

Purpose : The purpose of emergency medical services(EMS) is to save human lives and assure the completeness of the body in emergency situations. Those who have been qualified on medical practice to perform such treatment as there is the risk of human life and possibility of major physical and mental injuries that could result from the urgency of time and invasiveness inflicted upon the body. In the emergency medical activities, 119 emergency medical technicians mainly perform the task but they are not able to perform such task independently and they are mandatory to receive medical direction. The purpose of this study is to examine the recognition and request for medical direction by 119 emergency medical technicians in order to provide basic information on the development of medical direction program suitable to the characteristics of EMS as well as for the studies on EMS for the sake of efficient operation of pre-hospital EMS. Method : Questionnaire via e-mail was conducted during July 1-31, 2010 for 675 participants who are emergency medical technicians, nurses and other emergency crews in Gyeongbuk. The effective 171 responses were used for the final analysis. In regards to the emergency medical technicians' scope of responsibilities defined in Attached Form 14, Enforcement regulations of EMS, t-test analysis was conducted by using the means and standard deviation of the level of request for medical direction on the scope of responsibilities of Level 1 & Level 2 emergency medical technicians as the scale of medical direction request. The general characteristics, experience result, the reason for necessity, emergency medical technicians & medical director request level, medical direction method, the place of work of the medical director, feedback content and improvement plan request level were analyzed through frequency and percentage. The level of experience in medical direction and necessity were analyzed through ${\chi}^2$ test. Results : In regards to the medical direction experience per qualification, the experience was the highest with 53.3% for Level 1 emergency medical technicians and 80.3% responded that experience was helpful. As for the recognition on the necessity of medical direction, 71.3% responded as "necessary" and it turned out to be the highest of 76.9% in nurses. As for the reason for responding "necessary", the reason for reducing the risk and side-effects from EMS for patients was the largest(75.4%), and the reason of EMS delay due to the request of medical direction was the highest(71.4%) for the reason for responding "not necessary". In regards to the request level of the task scope of emergency medical technicians, injection of certain amount of solution during a state of shock was the highest($3.10{\pm}.96$) for Level 1 emergency rescuers, and the endotracheal intubation was the highest($3.12{\pm}1.03$) for nurses, and the sublingual administration of nitroglycerine(NTG) during chest pain was the highest($2.62{\pm}1.02$) for Level 2 emergency medical technicians, and regulation of heartbeat using AED was the highest($2.76{\pm}.99$) for other emergency crews. For the revitalization of medical direction, the improvement in the capability of EMS(78.9%) was requested from emergency crew, and the ability to evaluate the medical state of patient was the highest(80.1%) in the level of request for medical director. The prehospital and direct medical direction was the highest(60.8%) for medical direction method, and the emergency medical facility was the highest(52.0%) for the placement of medical director, and the evaluation of appropriateness of EMS was the highest(66.1%) for the feedback content, and the reinforcement of emergency crew(emergency medical technicians) personnel was the highest(69.0%) for the improvement plan. Conclusion : The medical direction is an important policy in the prehospital EMS activity because 119 emergency medical technicians agreed the necessity of medical direction and over 80% of those who experienced medical direction said it was helpful. In addition, the simulation training program using algorithm and case study through feedback are necessary in order to enhance the technical capability of ambulance teams on the item of professional EMS with high level of request in the task scope of emergency medical technicians, and recognition of medical direction is the essence of the EMS field. In regards to revitalizing medical direction, the improvement of the task performance capability of 119 emergency medical technicians and medical directors, reinforcement of emergency medical activity personnel, assurance of trust between emergency medical technicians and the emergency physician, and search for professional operation plan of medical direction center are needed to expand the direct medical direction method for possible treatment beforehand through the participation by medical director even at the step in which emergency situation report is received.

• 설비공학논문집
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• 제20권12호
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• pp.844-861
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• 2008

The papers published in the Korean Journal of Air-Conditioning and Refrigeration Engineering during the year of 2007 have been reviewed. Focus has been put on current status of research in the aspect of heating, cooling, ventilation, sanitation and building environments. The conclusions are as follows. (1) The research trends of fluid engineering have been surveyed as groups of general fluid flow, fluid machinery and piping, etc. New research topics include micro nano fluid, micropump and fuel cell. Traditional CFD was still popular and widely used in research and development. Studies about fans and pumps were performed in the field of fluid machinery. Characteristics of flow and fin shape optimization are studied in the field of piping system. (2) The research works on heat transfer have been reviewed in the field of heat transfer characteristics, heat exchangers, and desiccant cooling systems. The research on heat transfer characteristics includes thermal transport in pulse tubes, high temperature superconductors, ground heat exchangers, fuel cell stacks and ice slurry systems. For the heat 'exchangers, the research on pin-tube heat exchanger, plate heat exchanger, condensers and gas coolers has been cordially implemented. The research works on heat transfer augmenting tubes have been also reported. For the desiccant cooling systems, the studies on the design and operating conditions for desiccant rotors as well as performance index are noticeable. (3) In the field of refrigeration, many papers were presented on the air conditioning system using CO2 as a refrigerant. The issues on the two-stage compression, the oil selection, and the appropriate oil charge were treated. The subjects of alternative refrigerants were also studied steadily. Hydrocarbons, DME and their mixtures were considered and various heat transfer correlations were proposed. (4) Research papers have been reviewed in the field of building facilities by grouping into the researches on heat and cold sources, air conditioning and air cleaning, ventilation and fire research including tunnel ventilation, flow control of piping system, and sound research with drain system. Main focuses have been addressed to the promotion of efficient or effective use of energy, which helps to save energy and results in reduced environmental pollution and operating cost. (5) Studies were mostly focused on analyzing the indoor environment in various spaces like cars, old tombs, machine rooms, and etc. in an architectural environmental field. Moreover, subjects of various fields such as the evaluation of noise, thermal environment, indoor air quality and development of energy analysis program were researched by various methods of survey, simulation, and field experiment.

• 한국식품영양과학회지
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• 제44권12호
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• pp.1881-1894
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• 2015

본 연구는 전국의 어린이급식관리지원센터 중 총 30개 센터, 227명의 직원을 대상으로 2013년 12월 27일부터 2014년 1월 30까지 업무에 대한 만족도, 전반적 직무만족, 조직몰입, 이직의도를 조사하고 이들의 관계를 규명함으로써 어린이급식관리지원센터 사업의 효과를 높이고 직원들의 직무만족을 높일 수 있는 방안을 제시하고자 하였으며, 연구의 결과를 요약하면 다음과 같다. '어린이 대상 방문교육'의 업무만족도가 4.24점으로 가장 높았고, '재정관리' 업무만족도가 2.92점으로 가장 낮았다. 직무만족 조사도구의 타당도 분석을 위해 탐색적 요인분석을 실시한 결과 총 9개의 요인이 도출되었다. 직원의 직무만족에 대한 응답 결과 전반적 직무만족의 전체 평균값은 3.45점으로 나타났고, '동료와의 관계' 요인이 평균 3.99점, '직무성취감' 요인이 평균 3.98점, '회원 어린이급식소와의 관계'가 평균 3.45점으로 높게 응답되었다. 직무만족이 가장 낮게 응답된 요인은 '보수'로 2.45점이었으며, '업무의 양' 요인도 2.66점으로 낮게 응답되었다. 직원의 조직몰입에 대한 응답 결과 조직몰입의 전체 평균값은 3.54점으로 이직의도의 전체 평균값은 3.07점으로 나타났다. 전반적 직무만족, 조직몰입, 이직의도에 영향을 끼치는 단면적 직무만족 요인 회귀분석 결과 전반적 직무만족, 조직몰입, 이직의도에 공통적으로 상사와의 관계, 직무성취감, 고용안정성 및 복리후생 요인이 유의적인 영향을 끼쳤다. 센터의 공통적인 대표 업무 6가지로 영양순회지도 업무, 위생 안전순회방문지도, 어린이 방문교육, 조리원 방문교육, 집합교육, 재정관리를 선정하여 업무만족도, 근무하는 센터의 개소시기, 직원의 직위와 직무만족, 조직몰입, 이직의도 간의 관계를 보기 위하여 6개의 모형의 경로분석을 실시하였다. 6개의 모든 모형에서 업무만족도는 직무만족에 유의적인 영향을 끼치는 것으로 나타났으며, 조직몰입이 직무만족에 비해 이직의도에 직접적으로 더 강한 상관을 보였고, 직무만족과 이직의도 사이에 조직몰입이 매개하는 것으로 나타났다. 업무에 대한 만족도가 높은 위생 안전순회방문지도 업무(업무만족도 3.88점), 어린이대상 방문교육 업무(4.24점), 조리원대상 방문교육 업무(3.80점)는 경로모형에서 업무만족도가 직무만족도와 조직몰입에 유의적인 영향을 끼치는 것으로 나타났다. 타 업무에 비해 업무만족도가 4.24점으로 확연히 높게 응답된 어린이대상 방문교육 업무의 경우 업무만족도가 이직의도에도 유의적으로 영향을 끼치는 것으로 나타나, 업무만족이 이직의도에 미치는 영향력을 알 수 있었다. 따라서 업무만족도가 낮은 업무를 수행하는 직원을 대상으로 업무가 센터 업무 수행에 있어 중요한 역할을 함을 상기시킴으로써 조직몰입을 높이거나 업무만족이 낮은 업무와 높은 업무를 센터의 상황에 맞게 적절히 혼합하여 업무를 배정하는 방법을 통해 업무만족도를 높이는 방안을 찾는 것이 필요하다. 또한 직무만족이 조직몰입과 이직의도 모두에 유의적인 영향을 끼치므로 직무만족에 유의적인 영향을 끼치는 '상사와의 관계', '담당기관과의 관계', '직무성취감', '고용안정성 및 복리후생' 요인에 해당하는 직무환경을 개선하여 최종적으로 이직의도를 감소시키고 센터에 필요한 유능한 인재를 안정적으로 확보할 수 있도록 해야 할 것이다.

• 한국조경학회지
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• 제48권5호
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• pp.80-88
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• 2020

2019년 3월 미세먼지 비상저감조치가 일주일 동안 발령되면서, 미세먼지로 인한 국민의 불안감은 점차 가중되고 있다. 본 연구는 공기정화식물이 적용된 바이오필터의 다중이용시설 내 적용성 평가를 위해 입자상 오염원의 실내 연속방출환경을 조성하여 오염원 저감효과에 대한 측정방법을 제안하고, 시스템의 실내공기질 개선 여부를 확인할 수 있는 기초연구를 진행하였다. 강의실을 대상으로 춘절기에 모니터링 1시간 전 모기향을 오염원으로 배경농도를 조성한 후, 스케줄에 따라 2시간 관수, 1시간 송풍하여 미세먼지의 저감능을 확인하였으며, 바이오필터 2m 전방에 PM₁₀, PM_2.5 및 온습도 센서를 설치하고, 3개 송풍구 중 중앙에 풍속 프로브를 설치하여 시계열 모니터링을 수행하였다. 바이오필터에 구비된 총 3개소의 송풍구 평균 면풍속은 0.38±0.16 m/s로 댐퍼 면적이 제외된 송풍구별 면적 0.29m×0.65m을 적용한 총 공조풍량이 776.89±320.16㎥/h로 산출되었다. 시스템 가동으로 평균온도 21.5~22.3℃, 평균상대습도 63.79~73.6%를 유지하여, 선행연구의 다양한 조건별 온습도 범위에 부합하는 것으로 판단된다. 시스템 공조부 구동을 통해 급격하게 상대습도를 상승시키는 효과를 효율적으로 운용할 경우, 계절에 따른 실내 미세먼지 저감과 적정한 상대습도 확보도 가능할 것으로 판단된다. 미세먼지 농도는 바이오필터 시스템 가동 전의 모든 주기에서 상승 현상이 동일하게 집계되었으며, 시스템 가동 후 1주기 송풍구간(B-1, β=-3.83, β=-2.45)에서 미세먼지(PM₁₀)는 최대 28.8% 수준인 560.3㎍/㎥, 초미세 먼지(PM_2.5)는 최대 28.0% 수준인 350.0㎍/㎥까지 저감되었다. 이후 미세먼지(PM₁₀, PM_2.5)의 농도는 2주기 송풍구간 감소(B-2, β=-5.50, β=-3.30)로 각각 최대 32.6% 수준인 647.0㎍/㎥, 32.4% 수준인 401.3㎍/㎥까지 저감되었고, 3주기 송풍구간감소(B-3, β=5.48, β=-3.51)로 최대 30.8% 수준인 732.7㎍/㎥, 31.0% 수준인 459.3㎍/㎥까지 저감된 것으로 확인되었다. 본 연구는 식생 바이오필터의 다중이용시설 내 설치와 유관한 관련 표준 및 규정을 참조하여, 객관적인 성능평가환경의 구축 방안을 제시할 수 있었다. 이를 통해 일반 강의실 환경 내에 보다 객관화된 모니터링 인프라를 조성하여, 상대적으로 신뢰성 있는 데이터 확보가 가능했던 것으로 판단된다.