• 한국정보시스템학회지:정보시스템연구
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• 제15권2호
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• pp.195-226
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• 2006

The purpose of this study is (1) to develop a conceptually integrated model of IT capability comprising hierarchically structured lower capabilities, and (2) to investigate the impacts of IT capability on firm performance. To do this, the study defined IT capability as a third-order factor model and identified three conceptual dimensions of IT capability IT resource integrating capability, IT infrastructure flexibility, and IT personnel expertise. The relationships between IT capability and firm performance are assessed with 243 firm level data using LISREL. The results of confirmatory factor analysis (CFA) demonstrated that the constructs is highly reliable and valid. Further, we found that IT capability not directly but indirectly affects firm performance through the impacts on business processes.

• Journal of Information Technology Applications and Management
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• 제20권4호
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• pp.293-313
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• 2013

Preproject phase is an important but often ignored research area in information systems field although it has an undeniable importance for successful project. The purpose of this study is to identify factors affecting project performance in preproject phase and to find empirically critical factors among them. After deriving 9 factors through literature review including clear project definition, project leader position, staffing efforts, preproject team expertise, preproject knowledge scope, preproject partnering, top-management support, resource sufficiency, and project climate, the study investigate the influence of those factors on project performance. The study results reveal that clear project definition, project climate, resource sufficiency, pre-project knowledge scope, project leader position have significant impact on project process satisfaction, a measure of project performance, but the other factors do not. Based on the empirical results, the study discuss academic and practical implications.

• 한국산업융합학회 논문집
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• 제23권3호
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• pp.403-410
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• 2020

Continuous industrial development has led to a better quality of life for everyone, even further accelerating industrial growth. Industrial development, however, has also caused environmental degradation, which is posing a serious threat to humanity. It has also encouraged the indiscriminate use of limited resources, causing resource depletion. Efficient resource management based on resource circulation is critical to saving resources. Resource circulation methods are as follows: reducing the use of resources in the manufacturing process, recycling used or reprocessed products and reusing used resources without being reprocessed, remanufacturing with end-of-life products with disassembled parts. Furthermore, remanufacturing process including cleaning, inspection, repairing, and reassembling facilitate performance level as well as new typical products. It is noteworthy that the remanufacturing of machine tools can significantly save resources because their structural parts are substantially large in size. Machine tools have served as a foundation for the manufacturing industry, which has driven Korea's industrial development. Nevertheless, a few research has been reported for remanufacturing technology with used machine tools. Relevant research of developing a remanufacturing process chart and method is prerequisite for saving the resource and environments.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권11호
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• pp.5357-5381
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• 2018

Cloud computing offers a wide range of on-demand resources over the internet. Utility-based resource allocation in cloud data centers significantly increases the number of cloud users. Heavy usage of cloud data center encounters many problems such as sacrificing system performance, increasing operational cost and high-energy consumption. Therefore, the result of the system damages the environment extremely due to heavy carbon (CO2) emission. However, dynamic allocation of energy-efficient resources in cloud data centers overcomes these problems. In this paper, we have proposed Energy and Service Level Agreement (SLA) Aware Resource Allocation Heuristic Algorithms. These algorithms are essential for reducing power consumption and SLA violation without diminishing the performance and Quality-of-Service (QoS) in cloud data centers. Our proposed model is organized as follows: a) SLA violation detection model is used to prevent Virtual Machines (VMs) from overloaded and underloaded host usage; b) for reducing power consumption of VMs, we have introduced Enhanced minPower and maxUtilization (EMPMU) VM migration policy; and c) efficient utilization of cloud resources and VM placement are achieved using SLA-aware Modified Best Fit Decreasing (MBFD) algorithm. We have validated our test results using CloudSim toolkit 3.0.3. Finally, experimental results have shown better resource utilization, reduced energy consumption and SLA violation in heterogeneous dynamic cloud environment.

• 한국BIM학회 논문집
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• 제11권3호
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• pp.1-11
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• 2021

BIM is one of the means of reducing the economic loss caused by design errors. These features of BIM have led to increased use of BIM. With the increasing use of BIM, several studies have been conducted to analyze the performance of BIM. As the importance of BIM staff is emphasized in the performance analysis of BIM, the human resource allocation of BIM staff can become an important research issue. However, there are few studies to measure the workforce effectiveness of BIM staff. Ham et al (2020) measured BIM workforce efficiency using FCFS queue model rules. Since design errors can have different effects on the project depending on the type, there are design errors that must be dealt with first. Therefore, in this study, a priority queue was used to solve design errors with high priority first. The performance of BIM-based design verification was analyzed by quantitatively analyzing the performance of BIM staff when the priority rule was applied to the design error processing sequence.

• 한국통신학회논문지
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• 제39A권12호
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• pp.729-738
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• 2014

본 논문은 단말 간 직접 통신 (D2D: Device-to-Device) 시스템 환경에서 공간 재사용을 통한 성능 향상을 위해 그래프-컬러링 알고리즘을 기반으로 한 간섭 회피 자원 할당 방법을 제안한다. 다수의 D2D 페어가 하나의 D2D 통신 자원을 공유하는 경우, 인접한 D2D 페어로 인해 불가피한 간섭이 발생하게 되므로 간섭을 효율적으로 제어할 수 있는 자원 할당 방법이 필요하다. 따라서 우리는 D2D 페어가 기지국에 제공할 수 있는 피드백 양의 한계를 고려한 실용적인 피드백 정보 및 방법과 피드백 받은 정보를 활용한 그래프 설계 방법을 제안하고, 효과적인 간섭을 회피를 위한 그래프-컬러링 알고리즘을 도입한다. 시뮬레이션 결과를 통해, 본 논문에서 제안한 자원 할당 방법이 기존의 자원 할당 방법에 비해 D2D 시스템의 총 용량과 스펙트럼 효율 측면에서 성능 이득을 가져오는 것을 확인할 수 있으며 D2D 페어의 통신 불가 확률을 감소시킴을 확인할 수 있다.

• 사물인터넷융복합논문지
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• 제8권5호
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• pp.41-46
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• 2022

본 논문은 인력양성의 성과에 미치는 요인별 영향을 분석한 I-O 모델을 기반으로 모션그래픽스 전공과 글로벌 호텔리어 전공을 기준으로 산학협력 인력양성 과정을 수행한 결과와 그 의미를 분석하였다. 산학협력을 통한 인력양성을 위해서는 먼저 산업체 수요조사를 통한 공통직무 개발과 기업의 환경에 맞도록 미러형 실습실을 구축하고 교과, 비교과 등 교육과정 전반에 걸친 산업체 전문가의 적극적인 참여가 있어야 맞춤형 인력양성이 가능하다는 것을 알 수 있었다. 성공적인 산학 맞춤형 인력양성을 위한 전략으로는 산업체의 교육 참여를 통한 학생-산업체 매칭, 산학 일체형 교육, 교육 품질 고도화, 맞춤형 교육인프라 구축 등 4개의 추진전략으로 추진하였다. 본 논문에서는 모션그래픽스와 호텔리어 분야에서 5년간 산학협력을 통한 인력양성 성과를 분석하였고, 성과도출을 위한 노력이 어느 정도인지를 분석 및 개선점을 제시하였다.

• 농업과학연구
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• 제46권1호
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• pp.1-10
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• 2019

The objective of this study was to determine the effect of multi-enzyme supplementation in a corn and soybean meal-based diet on the growth performance, apparent nutrient digestibility, blood profile, fecal microbes and noxious gas emission in growing pigs. A total of 80 crossbred [(Landrace ${\times}$ Yorkshire) ${\times}$ Duroc] growing pigs with an average body weight (BW) of $25.04{\pm}1.44kg$ were used in a 6-week experiment. The experimental treatments were as follows: CON, basal diet and; T1, basal diet + 100 mg/kg multi-enzyme. During the experiment, the pigs fed the diet with multi-enzyme supplementation had a higher gain to feed ratio (G/F) (p < 0.05) than the pigs fed the diet without multi-enzyme supplementation. On day 42, the pigs fed the diet with multi-enzyme supplementation had decreased $H_2S$ and $NH_3$ emissions (p < 0.05) than the pigs fed the diet without multi-enzyme supplementation. However, no effect was observed on nutrient digestibility, blood profiles and fecal microbes among the treatments (p > 0.05). In conclusion, it is suggested that multi-enzyme supplementation in a corn and soybean meal based diet can partly improve the growth performance and noxious gas emission of growing pigs.

• 지식경영연구
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• 제10권4호
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• pp.93-114
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• 2009

This paper presents a knowledge-based view of the multi-business firm. The multi-business firm has advantages in technological innovation and knowledge creation to the extent that it embodies various ideas and resources, and recombines them more effectively and efficiently than market contracts. The purpose of this paper is to identify how to organize the multidivisional form (M-form) structure to realize such advantages. We first differentiate within-division innovation and cross-division innovation, and explain why cross-division innovation, despite its higher performance potential, would be more difficult to achieve, compared to within-division innovation. Then, we offer the propositions about how to promote cross-division innovation with references to resource capability and coordination capability that is, in turn, composed of structural and control system, social capital, and human resource management system. We conclude by discussing theoretical and practical implications.

• Industrial Engineering and Management Systems
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• 제6권1호
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• pp.83-93
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• 2007

This paper gives an attempt to build a decision support tool linked with a simulation software called ARENA for evaluating and comparing the performance of the push and pull material driven strategies operating in the flow shop environment with a bottleneck resource as the shop's constraint. To be fair for such evaluation, the comparison must be made fairly under the optimal setting of both systems' operating parameters. In this study, an optimal-seeking heuristic algorithm, Genetic Algorithm (GA), is employed to suggest a systems' best design based on the economic consideration, which is the profit generated from the system. Results from the study have revealed interesting outcomes, letting us know the strength and weakness of the push and pull mechanisms as well as the effect of each operating parameter to the overall system's financial performance.