• Informatization Policy
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• 제20권2호
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• pp.60-72
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• 2013

Rapid development of information and communication technologies leads firms to take 'smart work' into serious consideration as a new way of working in coming knowledge and information society. However, some jobs may be fit for smart work while some may be not. A $2{\times}2$ framework for smart work readiness assessment is developed in this study through the review of extant literature and a series of focus group activities. Two critical dimensions of smart work are derived and presented as a result: smartness (knowledge versus data) and mobility (mobile versus static). Knowledge intensive jobs with possible mobility seem to be the target group that can be easily converted to smart work while mobile workers with interactive data processing devices seem to be already doing smart work. As mobility is a critical presumption for work to be flexible in terms of time and place, jobs with no mobility are assessed here as not ready for smart work at least at present. This framework is experimentally applied against the published job statistics 2011 in Korea, and used to estimate the number of workers ready for smart work. As a conclusion, discussions on policy implications and further research issues are made at the end.

• Journal of the Korean Regional Science Association
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• 제40권2호
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• pp.21-38
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• 2024

Understanding the interrelationship between regional population dynamics and cultivated land is crucial for promoting regional economic vitality and enhancing food security. While prior research often addressed population migration and changes in crop area separately, this study employs a Panel Vector Auto Regression Model to examine the dynamic interaction between regional population shifts, changes in crop area, and the influx of foreign workers in agriculture. The results reveal a reciprocal relationship between population influx and crop area, indicating a negative impact on each other. Moreover, the analysis demonstrates that an expansion in crop area, particularly in field cultivation, significantly correlates with an increase in foreign workers. These findings underscore the mutual influence of labor shortages and diminished land availability in agriculture, with the influx of foreign workers potentially offering a positive impact on addressing structural challenges in rural areas.

• Journal of the Korean Institute of Telematics and Electronics S
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• 제36S권6호
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• pp.37-44
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• 1999

In this paper, we present a new sliding surface with a time-varying repeated root for fast and robust tracking of higher-order uncertain systems. The repeated root is moved to target one with stabilizing the closed-loop time-varying system in sliding mode. This initial root is obtained so that shifting distance of the surface may be minimized with respect to an initial error, and the intercept is produced so that the surface may pass the initial error. Under the allowable input, fast shifting of the surface and movement of the repeated root enable the error convergence rate to be increased. The proposed sliding mode control makes the error always remain on the surface from the beginning, and therefore, the system is more insensitive to parameter uncertainties and external disturbances. In simulation, the effectiveness of the proposed method is proved by comparison with the conventional one.

• Journal of Labour Economics
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• 제41권3호
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• pp.95-128
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• 2018

This study tries to measure the change in the state dependence of the three labor supply choices (part-time, full-time, and the state of unemployed) in Korean married women's labor market by estimating the dynamic multinomial logit model based on MSL (maximum simulated likelihood) method. A component representing individual's unobserved characteristics has been introduced, because it is crucial to control for unobserved heterogeneity in assessing the state dependence. Estimation results show that the state dependences of the three alternatives have strengthened recently. Therefore, part-time job has become more likely to be functioning as an extra option to participate in labor market rather than a bridge(stepping stone) or shelter between unemployment and full-time job.

• Korean Journal of Construction Engineering and Management
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• 제6권3호
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• pp.120-127
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• 2005

This study examines the occurrence of accidents when workers were travelling on construction sites and the differences in risk involved in each occupation. An analysis of 750 fatal accident reports found that in 138 cases, the fatality occurred when the workers were travelling on site. The 138 cases were then divided according to occupation and were then examined to determine how the workers in each occupation had been affected by various hazardous situations. There were significant differences in accident occurrence between the occupations and in the various hazardous situations. The results imply that the cultural aspect of each occupation leads to a substantial difference in the possibility of fatal injuries or death and that such differences in risk should be taken into account when planning the workers' movements on site. The findings of this study aim to help workers to understand the risks entailed when travelling on site and also to assist managers in the planning of workers, movements on construction sites.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제11권11호
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• pp.4418-4426
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• 2010

Muscle fatigue often induces deterioration of postural balance and muscle contraction, such as strength or maximal voluntary contraction(MVC). This study was to investigate the effects of transcutaneous electrical stimulation(TENS) applied to the fatigued muscles on postural imbalance and decline in muscle strength following fatigue of triceps surae. For the 4 months from March, 2010, twenty healthy subjects without vestibular disease and visual disturbance were recruited and induced muscle fatigue of triceps surea performed by repeated voluntary contraction. TENS was applied to gastocnemius immediately after development of muscle fatigue. Postural sway length, velocity and MVC were recorded under these conditions: pre-fatigue, post-fatigue, and TENS application to fatigued muscle during post-fatigue. Muscle fatigue increased postural imbalance as expressed by sway length and velocity and decreased muscle contraction(p<.05), while TENS improved the postural imbalance and MVC following muscle fatigue during stance(p<.05). The results suggested that fatigue on plantar flexor is associated with postural balance and muscle contraction, and TENS application to fatigued muscle was effective in improving postural imbalance and decline in muscle strength following muscle fatigue. TENS will be an effective method in exercise, working environment and daily life.

• Proceedings of the Korean Information Science Society Conference
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• 한국정보과학회 2002년도 가을 학술발표논문집 Vol.29 No.2 (2)
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• pp.31-33
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• 2002

이동 분산 실시간 시스템(MDRTS:Mobile Distributed Real-Time System)은 특정 시간 내에 분산 네트워크를 통한 정보 교환 및 요구된 동작을 실행한다. 그리고 경로, 시간 및 속력에 관한 제약사항에 따라 머신이 이동하는 시스템이다. 본 논문은 MDRTS에서 발생되는 머신의 이동을 분석하기 위해, PATM[1]에 위치 공간 개념을 추가하여 확장한 DATM(Distributed Abstract Timed Machine)을 정의한다. 머신의 이동과 이동을 제약하는 사항들, 경로, 시간 및 속력 등을 나타내는 표현법을 정의하며, 각 제약 사항에 따른 이동에 관한 규칙을 기술한다.

• Bulletin of the Korean Institute for Industrial Safety
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• 제3권1호
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• pp.27-30
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• 2003

지난해 12월 30일자로 산업안전보건법이 개정 공포(법률 제 6847호)됨으로써 단순반복작업 또는 중량물 취급 등으로 인한 근골격계질환의 예방을 위한 법적 근거를 마련하게 되었다. 이에 따라, 해당 사업장에서는 무엇을 어떻게 준비를 해야하는지에 대한 구체적 준비사항을 문의해 오고 있으면 근골격계질환 예방 관련 규칙개정(안)에 대한 관심이 매우 높은 상태이다. 따라서, 본 법의 취지대로 사업장에서 근골격계질환 예방을 효율적으로 수행하기 위해서 우선 사업장안전보건 관계자 및 근로자대표가 관련업무에 관해 무엇을 어떻게 수행해야 하는지를 구체적이고 명확하게 알아야만 책임을 지고 예방업무를 수행해 갈 수 있을 것이다.(중략)

• Optical Science and Technology
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• 제7권1호
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• pp.32-35
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• 2003

• 건축구조
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• 제12권1호
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• pp.8-10
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• 2005