• 한국항해항만학회지
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• 제38권6호
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• pp.615-621
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• 2014

해상교통관제사들의 과도하고 장기화된 스트레스가 그들의 삶의 질 뿐만 아니라 제공되는 서비스의 질에도 부정적인 영향을 미쳐 결과적으로 업무과중을 일으켜 선박사고 발생 위험률을 높일 수 있다는 데에 주목하고 스트레스 수준을 측정함과 아울러 스트레스에 영향을 미치는 직무스트레스 유발요인들을 추출해 보았다. 표준화된 측정도구(KOSS, PWI)로서 관제사들의 스트레스 수준을 측정해 보고, 배경적 변수(연령, 근무경력, 해상교통량 등)에 따라 스트레스에 차이가 있는가를 분석하였다. 그 결과, 관제사들은 일반인보다 높은 수준의 사회심리적 스트레스를 겪고 있었으며 연령 및 근무경력 별 스트레스 수준은 역U자 형태를 보였다. 또한 스트레스를 유발하는 직무환경적 요인들을 규명하였으며, 스트레스 관련 교육 및 근무환경 개선, 새로운 휴식시설 마련 등은 직무스트레스를 유의하게 낮게 함을 밝혔다. 그리고 근무환경, 교대근무 등의 직무환경적 스트레스 요인으로서 관제사의 직무스트레스를 설명할 수 있는 회귀모형을 도출하였다. 본 연구는 인적재해발생의 주요 원인인 직무스트레스에 관하여 고찰하고 해상교통관제 분야의 인적요인 연구에 필요한 기초자료로 삼고자 한다.

• 한국산업보건학회지
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• 제29권1호
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• pp.1-12
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• 2019

Objective: Significant concerns have been raised over chemical exposure and potential health risks such as increased cancer mortality among laboratory workers. The aim of this study was to investigate the overall exposure and unit task exposure levels of researchers in organic synthesis laboratories at universities. Methods: Seventy-seven personal Time-weighted average(TWA) samples and 139 task-based samples from four organic synthesis laboratories at two universities were collected over three days. The concentrations of acetone, chloroform, dichloromethane(DCM), diethyl ether, ethyl acetate, n-hexane, tetrahydrofuran(THF), benzene, toluene, and xylene were determined using the GC-FID. Results: The most frequently used chemicals in the laboratories were acetone, DCM, n-hexane, methanol, and THF. Carcinogens such as benzene, chloroform, and DCM were used in one or more laboratories. The TWA full-shift exposures of researchers to acetone was the highest(ND-59.3 ppm). Benzene was observed above the occupational exposure limit in 18-40% of the samples. The levels of exposure to organic solvents were statistically different by task(p<0.05), while washing task was the highest. Washing was not perceived as a part of the real lab tasks. Rather it was considered as simple dish-washing or experimental preparation and performed in an open sink where exposure to organic solvents was unavoidable. TWAs and task-based concentrations were compared by substance, which suggests that TWA-based assessment could not reflect short-term and high concentration exposures. Conclusions: Laboratory workers may be exposed to various organic solvents at levels of concern. TWA-based measurement alone cannot guarantee holistic exposure assessment among lab workers as their exposures are very dependent on their tasks. Further investigation and characterization for specific tasks and overall chronic exposures will help protect lab workers from unnecessary exposure to chemicals while they perform research.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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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.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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• pp.1172-1175
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• 2007

We have investigated the threshold voltage shifts(${\Delta}Vth$) and drain current level shift (${\Delta}Ids$) in subthreshold region of a-Si:H TFTs induced by DC Bias (Vgs and Vds) - Temperature stress (BTS) condition. We plotted the transfer curves and the ${\Delta}Vth$ contour maps as Vds-Vds stress bias and Temperature to examine the severe damage cases on TFTs. Also, by drawing out the time-dependent transfer curve (Ids-Vgs) in the region of $10^{-8}\;{\sim}\;10^{-13}$ (A) current level, we can estimate the failure time of TFTs in a operating condition.

• 대한인간공학회:학술대회논문집
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• 대한인간공학회 1993년도 추계학술대회논문집
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• pp.21-30
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• 1993

This paper describes the development of a simulation model of nuclear power plant operators including cognitive aspects by using a network modeling soft ware, Micro-SAINT (System Analysis of Integrated Networks of Tasks) for the analysis of operator performance. Network model description based on Micro-SAINT includes tasks, resources, precedence relations among tasks, flow of information and PSFs (Performance Shaping Factors) on task performance. We have tried to evaluate the performance with several performance measures such as the number of tasks allocated, relative time presure among operators within a shift, for the selected test accident scenarior; small-break LOCA (Loss of Coolant Accident) in a PWR (Pressurized Water Reactor) type nuclear power plant.

• 산업경영시스템학회지
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• 제16권27호
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• pp.105-111
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• 1993

Human works shift its roll from physical condition to the system supervisory control task In this paper safety-presentation configuration is discussed instead of well-known fault-warning configuration. Of paticular interest was the personal factor which include the cognitive process. Through a performance between each person information processing(d') and decision process($\beta$) was pointed out to explain the sensitivity of personal cognitive process. Impact of uncertainty effect the supervisor having doubt situations. These facts are released by the use of flat fuzzy number of $\beta$ and its learning rate R.

• 정보보호학회논문지
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• 제32권6호
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• pp.1183-1192
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• 2022

정보 및 정보를 생산, 처리, 폐기하는 시스템은 정보의 총수명주기에 걸쳐 일정수준의 보안이 유지되어야 한다. 일정수준의 보안을 유지하기 위해 소프트웨어 및 자동차 개발, 미국 연방정부 정보체계 등 시스템 수명주기의 보안관리 프로세스를 적용하고 있으나, 우리나라에는 이와 유사한 보안관리 프로세스가 전무한 실정이다. 본 논문에서는 국방 분야 정보 및 정보 처리시스템의 총수명주기에 걸쳐 일정수준의 보안을 유지하기 위한 한국형 보안위험관리 프레임워크를 제안한다. 국방 분야에 적용할 수 있는 한국형 보안위험관리 프레임워크의 개발 목적과 적용방안을 소개함으로써 향후 국방 보안업무가 나가야 할 방향을 제시하고 보안 패러다임의 전환을 유도하고자 한다

• 한국실내디자인학회논문집
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• 제19권2호
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• pp.176-185
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• 2010

Due to Korean government's reduction policy of the level of local administration, the government tries to become smaller and more efficient organization and in accordance with this movement, they try to transfer the human power and work of the office of Eup, Myeon, Dong to the office of Si, Goon, Goo so that they can take administrative action quickly, increase the efficiency of administration by preventing the overlapping of administrative task, improve the administrative service toward the citizens and make a functional shift of Inhabitant Self-Government Center in a way that is aimed at improving the quality of life of the inhabitants by setting up cultural, welfare facilities and forming the local community. Hereupon I expect this study will help to show the ways of composing the space of community center, accommodating the various demands of inhabitants through appropriate area calculation of functional area, increasing the efficiency of government officers' administrative support and also will be the guide for the architectural designs of the community centers. For this purpose, I have investigated community centers of 8 Dongs out of 11 Dongs in Goon-po Si that was chosen to be operating the pilot program of the office of Eup, Myeon, Dong's functional shift and obtained excellent results. I have surveyed how the functional spaces are being used, interviewed the government officials, examined the size of the functional and required space with Building card of a plan and the analyzed results are as follows.

• 한국콘텐츠학회논문지
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• 제18권9호
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• pp.424-432
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• 2018

직무급은 "업무를 수행하는 사람의 특징에 관계없이 직무의 가치에 따라 기본급이 결정되는 보상체계"이다. 2016년 근로자들의 정년이 60세 법제화의 영향으로 임금체계 개선을 시도하고 있다. 문재인정부에서는 전 정부에서 도입된 성과연봉제를 직무급제도로의 전환을 시도하고 있다. 즉, 연공급여에서 성과연봉도입, 그리고 직무급제도로의 전환이 이루어지고 있다. 본 연구는 최근 공공 기관들의 직무급여의 전환과 관련하여 사례기관을 조사 분석하였다. 즉, 성과연봉제 관련 직원들의 인식을 바탕으로 성과연봉제의 직무급제도로의 전환 관련 내용을 실증적으로 분석하였다. 연구결과 성과연봉제에 전반에 대한 부정적 인식이 강한 점과 직무급제도로의 전환 또한 반대가 높은 것으로 나타났다. 문제의 개선을 위해서는 성과연봉제와 직무급의 부정적 인식전환을 위한 노력, 성과 및 직무에 대한 공정한 평가기준 마련 등 관련 문제 개선, 직무급전환에 반대하는 직원 설득 등의 노력이 필요한 것으로 나타났다.

• 한국농촌건축학회논문집
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• 제18권1호
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• pp.47-56
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• 2016

Urban planning is the task to explore measures for bringing order to the change in urban space of future predicted in relation to the size and purpose of the land and a variety of facilities in cities in order to present the environment that can promote the qualitative improvement of activities of residents, ensure orderly urban space of future, and create appropriate urban environment which meets the desire of citizens by anticipating the urban development on the basis of overall activities such as politics, economics, culture, etc, so that the improvement in urban life can be accomplished ultimately. Therefore, this study attempted to examine current conditions information necessary for establishing policies pursuant to the national land development plan and regional development, as well as respond to the needs of urban residents who need the improvement of settlement environment including various amenities for the convenience of life, by shifting away form the macroscopic and one-size-fits top-down approach of development so far and aiming a balanced development of national land in quest for welfare society and by utilizing the urban index as the basic prior task necessary for seeking the shift ind the direction of policies and setting the direction for policies on the basis of the top-down development approach which suits the anticipation and hope of local residents as the subject of development, considering the growing interest in the shift in the policies for regional development in this era of localization. Techniques for urban planning need to be applied, such as the prior planning and the following development, along with the support at the policy level for achieving the improvement in the related sector, in order to induce continuos urban deelopment based on the establishment of healthy and sound settlement environment, and furthermore, the efforts must be drven forward to improve the urban settlement environment while the urban planning and policies are established.