• 한국사회정책
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• 제23권3호
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• pp.17-47
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• 2016

이 글은 노동시간의 소득계층별 차이와 분포 및 추이를 드러내고 정책적 함의를 도출한다. 노동시간을 주변적시간제, 시간제, 표준노동시간, 장시간으로 구분하고 소득분위별 상대분포를 비교한 결과, 소득 하위 20%는 주변적시간제 내지 시간제일자리에, 소득 2분위에서 4분위까지 60% 가량이 장시간 노동에, 상위 20%는 표준시간노동에 종사하였다. 한국의 노동시간은 단시간-저소득의 유형I, 장시간-중위소득의 유형II, 표준시간-고소득의 유형III으로 계층화된다. 노동시간 유형에 대한 패널 다항로짓 분석결과 월평균 임금을 기준으로 저임금-단시간, 중위임금-장시간, 고임금-표준시간의 유형이, 시간당 임금을 기준으로 저임금-초장시간, 중위임금-장시간, 고임금-표준시간 유형이 확인되었다. 시간당임금 및 월임금, 비정규직 비율, 직업군, 연령대를 중심으로 노동시간의 계층화가 심화되었다. 소득 하위 20%에 대해서는 최저임금 인상, 중위소득 60%를 포함한 다수의 노동자에 대해서는 노동시간 단축을 통한 고용창출이 유효한 전략이 될 수 있다.

• 한국안전학회지
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• 제26권3호
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• pp.69-74
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• 2011

Despite most of tasks in manufacturing, construction and agriculture, etc., were currently mechanized and automated, manual materials handling still existed in atypical working condition. In case of manual materials handling, repetitive work, inappropriate working posture, excessive force, contact stress might cause overload, which could lead to work-related musculoskeletal disorders and low back pains. On this basis, the goal of this study is to reveal the effects of various lifting postures of trunk angles and lower extremity postures on maximum holding time(MHT). Twenty two subjects were recruited from a university population. The experiment was designed by a combination of three trunk angle ($0^{\circ}$, $20^{\circ}$, $60^{\circ}$) and three lower extremity postures(straight, bent, kneeling). Before experimental trials, subjects performed MVC(maximum voluntary contraction) exertions in three trunk angles ($0^{\circ}$, $20^{\circ}$, $60^{\circ}$) to calculate 30%MVC at designated postures. In each trial, they were required to hold the handheld load(30%MVC) for a designated posture as long as they could. The results of MVC by trunk angles were measured in $0^{\circ}$ > $20^{\circ}$ > $60^{\circ}$ orders, but those of MHT measured in $20^{\circ}$ > $0^{\circ}$ > $60^{\circ}$ orders. These results showed that straight posture is the ideal working posture in work exerted a strong force for a short time, but the ability to work might be improved in the trunk angle $20^{\circ}$ in work required 30%MVC for a long time. Also, results of MVC and MHT by lower extremity postures measured in straight > bent > kneeling orders.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2005년도 춘계학술대회
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• pp.542-545
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• 2005

This paper is concerned wi th the generation of the Lamb waves in a non­ferromagnetic plate by a recently-developed orientation-adjustable patch-type magnetostrictive transducer (OPMT) and the dispersion analysis from the measured Lamb waves. OPMT is capable of adjusting wave-propagation orientation only with a single installation on a plate. The mechanics behind the wave generation and measurement by the magnetostrictive phenomenon, the working principle of OPMT is explained and the actual generation and measurement of the Lamb waves were conducted in a 3 mm-thick aluminum plate. For the accurate analysis of the dispersion characteristics of the measured Lamb waves, a modified version of the short-time Fourier transform, known as the dispersion-based short-time Fourier transform, was employed. The results presented in this work would serve as the underlying research for an advanced non-destructive evaluation based on ultrasonic waves.

• 한국경제지리학회지
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• 제17권4호
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• pp.759-770
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• 2014

본 논문은 시간의 제약이 활동 및 통행으로 연결됨을 확인하는 것이 목적이며, 이를 위해 우리나라 수도권 전일제 근로자의 평일 시간이용에 집중하였다. 특히, 우리나라의 근로자는 다른 OECD 국가의 근로자보다 근로시간에 할애하는 시간이 압도적으로 많다. 이로 인해 나타나는 시간부족현상은 긴 근로 시간으로 인해 근로 외 활동에 제약이 생기는 문제가 나타날 수 있다는 차원에서 삶의 질 문제를 논의해볼 수 있다. 이와 같은 배경에서, 수도권에 거주하는 전일제 근로자의 시간 제약이 활동 및 통행 제약에 영향을 끼치는지 확인하기 위해 2010 가구통행실태조사의 수도권 자료를 활용하여 통행사슬(trip-chain)을 구성하였으며, 이를 유형별로 구분하고 유형에 따른 시간이용패턴을 분석했다. 그 결과, 시간부족현상이 전반적인 활동의 제약으로 나타났으며, 이는 활동패턴에 영향을 끼치는 것으로 나타났다. 본 논문은 근로시간 및 교통에 관련된 정책 대안에 함의를 가지고 있으며, 향후 활동기반 관점의 삶의 질 측정에 도움이 될 것으로 생각된다.

• 만화애니메이션 연구
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• 통권40호
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• pp.1-31
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• 2015

서구 유럽 및 일본애니메이션에 비해 짧은 역사를 지닌 한국 애니메이션은 1950년대 후반 광고애니메이션과 문화영화의 일환으로 제작된 비상업용 단편애니메이션으로 출발하였다. 1960년대 영화법과 문화정책이 투영된 문화영화 애니메이션은 한국애니메이션의 역사에서 거의 언급되지 않고 있지만, 극장용 장편애니메이션 이전에 제작된 귀중한 문화 창작물이다. 특히 15초 내외의 짧은 CF애니메이션에 비해 4분에서 10분 내외의 단편애니메이션으로 그 당시 한국애니메이션의 수준을 가늠할 수 있는 사료적 가치가 있는 작품들이다. 1960년대에 20여편의 단편애니메이션이 제작 되었으며, 주로 근대화 정책추진과정에서 국민들을 계몽하기 위한 교육 내용을 담고 있다. 국립영화제작소에서 문화영화로 제작된 단편애니메이션은 셀을 활용한 카툰애니메이션 이외에도 페이퍼애니메이션, 퍼핏애니메이션도 제작되었다. 이러한 배경에서 본 논문은 1960년대에 국립영화제작소에서 제작된 단편애니메이션에 주목해보고자 한다. CF 이외에 초기 단편애니메이션의 연구가 거의 없는 상태에서 작품의 발굴과 분석은 의미 있는 일이라 생각하며, 이 창작과정에 참여했던 박영일감독, 한성학감독, 정도빈감독, 신동헌감독, 넬슨신감독 등이 이후 극장용 애니메이션 감독으로 활동하였기에 그 작품에 대한 분석은 한국애니메이션을 이해하는 중요한 기반 연구가 될 것이라고 본다. 논문에서는 국립영화제작소 창설의 시대적 상황 및 1960년대 국립영화제작소에서 창작된 단편애니메이션 중 감독 등 참여인력을 확인할 수 있는 10편의 작품을 중심으로 서사적 의미와 조형적 특징을 연구해보고자 한다. 이를 통해 그간 한국애니메이션역사 연구에서 간과된 비상업적 단편애니메이션에 대한 고찰과 향후 한국애니메이션사에 대한 보다 풍부한 연구가 진행되는 단초를 마련해보고자 한다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 춘계학술대회
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• pp.648-653
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• 2003

In order to predict stress intensity limit of high-temperature creep structures, creep work-time equation, defined as $W_ct^P=B$, was used, and the results of the equation were compared with isochronous stress-strain curve (ISSC) ones of ASME BPV NH Code. For this purpose, the creep strain tests with. time variations for commercial type 316 stainless steel were conducted with different stresses; 160 MPa, 150 MPa, 145 MPa, 140 MPa and 135 MPa at $593^{\circ}C$. The results of log $W_c$ and log t plots showed a good linear relation up to $10^5$ hr. The constants p, B and stress intensity limit values showed comparatively good agreement to those of ASME NH ISSC. It is believed that the relation can be simply obtained with only several short-term 1% strain data without ISSC which can be obtained by long-term creep data.

• Safety and Health at Work
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• 제6권3호
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• pp.192-199
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• 2015

Background: Overweight, obesity, and cardiovascular disease risk factors are prevalent among firefighters in some developed countries. It is unclear whether physical activity and cardiopulmonary fitness reduce cardiovascular disease risk and the cardiovascular workload at work in firefighters. The present study investigated the relationship between leisure-time physical activity, cardiopulmonary fitness, cardiovascular disease risk factors, and cardiovascular workload at work in firefighters in Hong Kong. Methods: Male firefighters (n = 387) were randomly selected from serving firefighters in Hong Kong (n = 5,370) for the assessment of cardiovascular disease risk factors (obesity, hypertension, diabetes mellitus, dyslipidemia, smoking, known cardiovascular diseases). One-third (Target Group) were randomly selected for the assessment of off-duty leisure-time physical activity using the short version of the International Physical Activity Questionnaire. Maximal oxygen uptake was assessed, as well as cardiovascular workload using heart rate monitoring for each firefighter for four "normal" 24-hour working shifts and during real-situation simulated scenarios. Results: Overall, 33.9% of the firefighters had at least two cardiovascular disease risk factors. In the Target Group, firefighters who had higher leisure-time physical activity had a lower resting heart rate and a lower average working heart rate, and spent a smaller proportion of time working at a moderate-intensity cardiovascular workload. Firefighters who had moderate aerobic fitness and high leisure-time physical activity had a lower peak working heart rate during the mountain rescue scenario compared with firefighters who had low leisure-time physical activities. Conclusion: Leisure-time physical activity conferred significant benefits during job tasks of moderate cardiovascular workload in firefighters in Hong Kong.

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 2003년도 가을 학술발표회 논문집
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• pp.445-448
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• 2003

Polymer concrete using wastes PET recycled resin that is, in general, more excellent mechanical properties than portland cement concrete. A lot of works are carried out about short-term properties of polymer concrete, however, little work has done to define their long-term properties, that is, sustain load such as creep. In this study will show the data that can long-term behavior of polymer concrete by short term creep test of polymer concrete that was affect to the temperature and the time to predict to long-term creep behavior. Then prediction equation was similar tendency that was comparing to short-term creep test and long-term creep test.

• 가족자원경영과 정책
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• 제10권2호
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• pp.87-105
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• 2006

The goal of this study is to analyze the complicated and diverse nature of the relationship between work and family life for the study paper instructors of whom are married women. The survey data for these analyses were from an in depth interview which was conducted with the 21 contingent female workers as study samples. They are the married women, who started to work or returned to work after an absence to raise a family. The results showed that in reality the contingent female worker faced worse working conditions than the full time female labour force, even if women were determined to be a study paper instructor to meet work and family demand. It was the contingent women worker with a short time work experience who were in the worst position tlo adjust their working arrangements to suit their family needs and were confronted with the greater inter-role friction as a vulnerable group. The study revealed that instrumental and emotional support of husband has a positive effect on maintaining job role and lessening role conflicts and stress of the women. The work/family relationship indicated its double side, conflict and support. The women simply could not afford to depend on the psychological support form family in the midst of the inferior employment conditions and the absence of social support. This strategy, however, was based on the family ideology and the patriarchal gender division of labor. It caused the overload, stress and poor health of women involving some risk to give up the work.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송공학회 1997년도 Proceedings International Workshop on New Video Media Technology
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• pp.75-81
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• 1997

A new DTPP (Desk-Top Program Production) system has been developed that enables multiple program producers (directors) working at different locations to collaborate over a computer network and prepare a single program for broadcasting. In this system, information is shared among users by exchanging data edited on non-linear editing terminals in program post-production work over a network in real time. In short, the new DTPP system provides a collaborative work space for producing TV programs. The system does not make use of a special server for collaborative work but rather multiple interconnected editing terminals having the same functions. In this configuration, data at a terminal which has just been edited by some operation is forwarded to all other connected terminals for updating. This form of information sharing, however, requires that some sort of data synchronizing method be established since multiple terminals are operating on the same data simultaneously. We therefore adopt a method whereby the system synchronizes the clocks on each terminal at the time of connection and sends an operation time stamp together with edited data. This enables most recently modified data to be identified and all information on all terminals to be updated appropriately. This paper provides an overview of this new collaborative DTPP system and describes the techniques for exchanging edited data and synchronizing data.