• Environmental and Resource Economics Review
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• v.27 no.1
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• pp.1-28
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• 2018

This study investigates the strategic environmental corporate social responsibility (ECSR) of polluting duopoly when two firms have different production costs and compete with prices. We then examine an endogenous timing game in choosing ECSR and its effects on environmental damage and social welfare. The followings are the main findings: First, sequential choice of ECSR is strategic complements and it provides late adopter advantage irrespective of cost difference. Second, sequential choice of ECSR is the equilibrium of endogenous timing game. In particular, an efficient firm-leading ECSR is the payoff dominance equilibrium when cost difference is significant. Finally, environmental damage and social welfare depend on the social cost of pollution. In particular, an efficient firm-leading ECSR is socially desirable when social cost is high. However, an inefficient firm-leading ECSR increases environmental damage irrespective of social cost and it reduces social welfare when cost difference is significant.

• The Journal of the Korea Contents Association
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• v.21 no.9
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• pp.622-631
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• 2021

This study was conducted to verify the effects of individual psychological capital, spousal support, and organization's family-friendly work culture on work-life balance in social workers. For this purpose, married social workers working in social welfare facilities in Chungcheongbuk-do were surveyed, and 331 collected responses were used in the analysis. Multiple regression analysis revealed that resilience and optimism in individual psychological capital, spousal support, and expectations on working hours in organizations' family-friendly work culture were significantly associated with the work-life balance. In addition, there were different factors influencing the level of work-life balance according to gender and age. The findings suggest that efforts to enhance awareness and improve working conditions, such as the development of self-care program, education on the necessity of work-life balance, and implementation of work-life balancing system, are needed to improve the work-life balance of social workers.

• Science of Emotion and Sensibility
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• v.5 no.4
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• pp.67-75
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• 2002

The purpose of this study is to assess the ability of balance control in virtual moving surround stimulation using head mount display (HMD) device and force platform in patients with brain injury. Fifteen patients with stroke (mean age 54.47 yrs) and fifteen healthy normal persons participated. COP parameters were obtained total path distance, frequency of anterior-posterior and medial-lateral component by FFT analysis, weight-spectrum analysis in the two different conditions; (1) during comfortable standing with opened or closed eyes, (2) during virtual moving surround stimulation delivered using HMD with four different moving pattern. Moving patterns consisted of close-far, superior-inferior lilting (pitch) , right-left tilting (roll) and horizontal rotation (yaw) movement. In all parameters, the test-retest reliability was high. Also, the construct validity of virtual moving surround stimulation was excellent (p＜0.05). A posturographic balance assessment system equiped with virtual moving surround stimulation using HMD is considered clinically useful in evaluation of balance control in patients with brain injury.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2002.05a
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• pp.232-239
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• 2002

경영환경의 변화를 예측하고, 변화를 창조하며 적극적으로 대응하고자 하는 오늘날 기업 활동의 노력은 전통적인 경영관리시스템(MIS, Management Information System)의 한계를 인식하고 있다. 테일러의 과학적 경영관리 기법을 근간으로 발전해온 MIS분야는 종래의 경영환경, 즉 변화 정도가 미약하거나 또는 예측 가능한 변화의 환경 속에서 기업관리 활동이 가능한 경우에 그 효과를 볼 수 있었다. 전략적 기업관리(SEM, Strategic Enterprise Management)는 기업의 가치창출을 위한 근본적인 프로세스에 관심을 가지고 있다. 이 연구에서는 기업의 가치중심 경영 기법과 연계되는 성과관리시스템의 새로운 설계 방안을 제시하고자 한다. 기업의 전략적 가치동인(value driver)을 도출하여 전략방향의 대안을 제시하고 그러한 전략대안을 달성하기 위한 균형성과지표를 개발한다. 향후 이 지표들은 다시 가치동인도에 반영되어 기업의 전략적 가치향상을 위한 지표 선정의 적정성을 검증하게 된다. 결국, 기업의 가치창출이라는 대명제 안에서 가치평가모델링(VBM, Value Based Management)과 균형성과 지표의 연계성을 강조하는 틀을 제시하게 될 것이다.

• Journal of Environmental Policy
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• v.6 no.3
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• pp.91-114
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• 2007

The cooperative cost sharing scheme for Dust and Sand Storm(DSS) in North East Asia, as suggested in Song and Nagaki(2007), may not be feasible due to possible defection(s) of participating countries. If non-cooperative strategies are more plausible, Nash equilibrium can suggest possible outcomes of the cost sharing game. The result from the continuous strategy model shows that there exists an infinite number of Nash equilibrium such that the summation of investment from each country is always equal to the required budget of the ADS pilot project. It is also discussed that the discrete strategy model points to only 3 Nash equilibria in continuous strategy game outcome and the cooperative game solution may be just one of the infinite equilibria.

• Journal of KIISE:Computing Practices and Letters
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• v.10 no.1
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• pp.49-56
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• 2004

Load imbalance is a serious impediment to achieving good performance in parallel processing. Global load balancing schemes cannot adequately manage to balance parallel tasks generated from a single application. Dynamic loop scheduling methods are known to be useful in balancing parallel loops on shared-memory multiprocessor machines. However, their centralized nature causes a bottleneck for the relatively small number of processors in a network of workstations because of order-of-magniture differences in communication overheads. Moreover, improvements of basis loops scheduling methods have not effectively dealt with irregularly distributed workloads in parallel loops, which commonly occur in applications for a network of workstation. In this paper, we present a new reconfigurable and decentralized balancing method for parallel loops on a network of workstations. Since our method supplements performance balancing with those tranditional load balancing methods, it minimizes the overall execution time.

• Environmental and Resource Economics Review
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• v.18 no.2
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• pp.311-344
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• 2009

The hypothesis that the common market equilibria for housing attributes are attained within distinctive submarkets was tested. Markets for housing attributes with greater supply flexibility, i.e., structural variables, were found to be closer to their common equilibria than markets with less supply flexibility, i.e., neighborhood and distance variables. In addition, submarkets with greater mobility were found to achieve common market equilibria for more housing attributes with greater supply flexibility, but not for housing attributes with lower degree of supply flexibility. Results suggest supply flexibility and occupier mobility are both necessary conditions for achieving common market equilibria for housing attributes.

• 한국벤처창업학회:학술대회논문집
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• 2021.04a
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• pp.49-53
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• 2021

'양손잡이 조직(Organizational Ambidexterity)'은 새로운 기회를 찾고 위험을 감수하며, 신제품이나 신사업을 개발해 가는 탐색(Exploration) 역량과, 최소한의 리스크와 보유한 자원을 토대로 기존 제품이나 서비스를 중심으로 효율성을 높이는 활용(Exploitation)적 혁신을 동시에 추구하는 조직의 능력으로 경영자들이 비즈니스 환경의 난기류와 다차원성에 대처하도록 권고하는 개념들 중 하나이다. 본 연구는 스타트업의 양손잡이 역량 균형이 기업 성과에 미치는 영향에 대한 연구를 기반으로 양손잡이 역량이 실제 스타트업에 긍정적으로 영향을 미치는 지를 조사하는데 목적으로 하고 있다. 따라서 탐색(Exploration)과 활용(Exploitation)의 적절한 균형(Balance)을 중심으로 기업성과에 미치는 영향과 더불어 환경적 동태성(Environmental Dynamics)의 조절효과에 대하여 알아보고 분석하였다. 실제로 선행 연구를 통해 탐색(Exploration)과 활용(Exploitation)에 모두 관여하는 양손잡이 기업들이 하나에 집중하는 기업보다 우수한 성과를 달성할 가능성이 높은 것으로 나타났으며, 탐색(Exploration)과 활용(Exploitation)의 적절한 균형(Balance)을 유지하는 것이 생존과 번영을 위해 중요한 것으로 나타났다. 특히, 자원이 부족한 스타트업의 경우 부족한 자원을 효과적으로 활용하고 양방향으로 행동할 수 있는 능력은 경영 능력과 역량에 달려 있기 때문에 지속적인 생존을 위해 탐색과 활용의 균형을 맞추고 효과적인 조직을 구축해 양손잡이 조직으로 거듭나야만 한다. 양손잡이 조직에 대한 연구 이론은 보통 여유 자원이 높은 대기업을 기준으로 정의되고 있으며, 상대적으로 여유 자원의 수준이 낮은 중소기업이나 스타트업을 위한 양손잡이 조직의 의미와 이러한 기업들이 추구할 수 있는 현실적인 실행방안에 대해서는 연구가 부족한 실정이다. 따라서, 본 연구는 실제 스타트업 기업의 성장을 위한 전략적 방향 설정을 제시할 수 있으며, 급격하게 변화하는 시장에서 스타트업의 양손잡이 역량과 기업성과 영향 관계를 분석하여 학술적인 기여를 할 수 있을 것으로 기대한다.

• Environmental and Resource Economics Review
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• v.20 no.4
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• pp.827-858
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• 2011

In Korea, various environmentally harmful subsidies are granted in agriculture, fishery, energy, electricity, transportation, steel and shipbuilding industry. Examples include tax-exempt fuel for agriculture & fishery, VAT- exemption for briquette & anthracite, temporary subsidy for fuel, production stabilizing subsidy for coal mining, subsidy for briquette. Korea's yearly total subsidy in energy area is about 5,291 billion won, among them is 4,870 billion won. To reduce air pollutants and to mitigate climate change, Korea has to review the phase-out of environmentally harmful subsidies and the phase-in of environment-friendly subsidy. The reduction or removal of environmentally harmful subsidies will enhance economic efficiency and bring about environmental benefits. Economic efficiency means less use of inputs, which reduces environmental cost and improves social benefits. This paper applies the Shoven and Whalley's model to the Korean economy and analyzes the general equilibrium incidence effects of reforming environmentally harmful subsidies in the energy and electricity in Korea. We consider several counterfactual scenarios in which current environmentally harmful subsidies are reduced or abolished, compare them with the reference case in the economy, and evaluated the change in efficiency costs and distributional incidence of tax reforms related to subsidies.

• Proceedings of the Korea Information Processing Society Conference
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• 2017.04a
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• pp.1115-1117
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• 2017

균형 장애나 비정상적 보행 패턴으로 인한 질환을 예방하고 치료하기 위해서는 균형 능력과 보행 패턴에 대한 정량적인 평가가 필수적이다. 본 논문에서는 임상에서 사용하는 균형 및 보행 분석 시스템과 임상적 평가의 단점을 보완하기 위한 임상적 평가를 위한 다중 센서 내장 깔창 시스템을 제안한다. 이 시스템은 검사 대상자가 압력 센서들과 관성 센서가 내장된 깔창을 착용하고 임상적 검사를 수행하면 균형 및 보행과 관련된 다양한 지표를 정량적으로 제시하고 현재 족저압력 분포 및 자세 등을 실시간으로 시각화 한다. 본 논문에서 제안한 시스템을 보완하여 임상에 적용한다면 간편하게 정량적인 평가가 가능한 환경을 제공할 것으로 기대한다.