• Journal of Distribution Research
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• v.3 no.1
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• pp.71-98
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• 1998

This study aimed to investigate how such retailers as department stores, large discount stores, book wholesalers, and clothing wholesalers used information technology for the QR strategy and whether the QR strategy had an effect on performance with a focus on the pipeline strategy. For this purpose, the QR strategy was divided into transaction efficiency, supplier partnership, and customer detail strategy. The differences in performance and information technology were analyzed according to the fit of the pipeline strategy, such as internal focus, supplier focus, and customer focus, the business strategy which were used by the retailers. And, an attempt was made to investigate whether performance was raised according to the level of adopting information technology. The results can be summarized as allows. First, the adaptive level of information technology had an effect on performance. But, seeing that the explanatory power of the regression analysis on the effect of the adaptive level of information technology on performance was shown to be very weak, it is judged that the level of QR information technology in the responding firms was very low compared to that of foreign firms. Second, information technology used by the retailers included universal product code, bar coding, customer database, and information utilities. It was shown that the group of firms seeking the transaction efficiency QR strategy and the internal focus pipeline strategy had the higher level of information technology than the retailers seeking other customer detail QR strategy and the customer focus pipeline strategy and the retailers with inconsistent strategy. This indicates that the firm seeking to raise its internal efficiency has a high level of using information technology. At the end of the paper, managerial implication and future research directions were discussed.

• Journal of Information Science Theory and Practice
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• v.10 no.spc
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• pp.76-85
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• 2022

At the 8th National High-Performance Computing (HPC) Committee convened in 2021, the "National High-Performance Computing Innovation Strategy (draft) for the 4th Industrial Revolution Era" was deliberated and the original draft was approved. In this proposal, the Ministry of Science and ICT in KOREA announced three major plans and nine detailed projects with the vision of "Realizing the 4th industrial revolution quantum jumping by leaping into a high-performance computing powerhouse." Thereby the most important policy about national mid-term and long-term HPC development was established and called the HPC innovation strategy (hereinafter "the innovation strategy"). The three plans of the innovation strategy proposed by the government are: Strategic HPC infrastructure expansion; Secure source technologies; and Activate innovative HPC utilization. Each of the detailed projects has to be executed nationally and strategically. In this paper, we propose a strategy for the implementation of two items ("Strategic HPC infrastructure expansion" and "activate innovative HPC utilization") among these detailed plans.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.28 no.2
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• pp.69-74
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• 2005

As today's Information Technology (IT) becomes more global and specialized the importance of Information Technology Architecture (ITA). Based on the case study of e-commerce, this paper presents a systematic approach to Information Strategy Planning (ISP) with ITA. To implementation of strategic approach, ITA is developed to establish e-commerce projects. It is believed that the Chief Information Officer (CIO) will be more receptive to results that include ISP and ITA are combined simultaneously.

• Asia pacific journal of information systems
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• v.14 no.4
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• pp.123-145
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• 2004

This paper empirically and longitudinally examines relationships among corporate strategy, competitive advantage of information technology (CAIT), and organizational performance. This research replicates the research done in 1997 and compares the results to observe any noticeable changes. Research results confirm that information technology provides several traits of strategic advantages such as efficiency, threat, functionality, preemptiveness, and synergy and significantly contributes to corporate performance both in 1997 and 2004. The findings reinforce the accepted belief that alignment between corporate strategy and CAIT is critical for firms to attain sustainable competitive advantage, subsequently enhances corporate performance and competitive position against rivals, potential entrants, substitutes, suppliers, and buyers. Research results of 2004 show stronger relationships among corporate strategy, competitive advantage of information technology, and organizational performance than research results of 1997.

• Asia pacific journal of information systems
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• v.8 no.1
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• pp.65-86
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• 1998

This paper empirically examines relationships among corporate strategy, competitive advantage of information technology(CAIT), and organizational performance. Effects of information technology on the linkage between corporate strategy and performance is investigated and CAIT measures suggested by Sethi and King(1994) as well as Sung(1997) are tested for verification. Research results confirm that information technology provides several traits of strategic advantages such as efficiency, threat, functionality, preemptiveness, and synergy and significantly contributes to corporate performance. CAIT measures developed by Sethi and King show strong reliability and validity, Generally, service industry firms show more strong relationship among CAT strategy, and performance than manufacturing industry firms. The findings reinforce the accepted belief that alignment between corporate strategy and CAT is critical for firms to attain sustainable competitive advantage, subsequently enhances corporate performance and competitive position against rivals, potential entrants, substitutes, suppliers, and buyers.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.17 no.9
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• pp.2419-2435
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• 2023

Command and control networks(C2N) exhibit evident multi-network interdependencies owing to their complex hierarchical associations, interleaved communication links, and dynamic network changes. However, the existing command and control networks do not consider the effects of dependent nodes on the load distribution. Thus, we proposed a command and control networks load allocation strategy based on interdependence strength. First, a new measure of interdependence strength was proposed based on the edge betweenness, which was followed by proposing the inter-layer load allocation strategy based on the interdependence strength. Eventually, the simulation experiments of the aforementioned strategy were designed to analyze the network invulnerability with different initial load capacity parameters, allocation model parameters, and allocation strategies. The simulation indicates that the strategy proposed in this study improved the node survival rate of the interdependent command and control networks model and successfully prevented cascade failures.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.15 no.2
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• pp.461-484
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• 2021

Compressed sensing in image reconstruction has attracted attention and many studies are proposed. As we know, adding prior knowledge about the distribution of the support on the original signal to CS can improve the quality of reconstruction. However, it is still difficult for a recovery framework adjusts its strategy for exploiting the prior knowledge efficiently according to the current estimated signals in serial iterations. With the theory of information geometry, we propose an adaptive strategy based on the current estimated signal in each iteration of the recovery. We also improve the performance of existing algorithms through the adaptive strategy for exploiting the prior knowledge according to the current estimated signal. Simulations are presented to validate the results. In the end, we also show the application of the model in the image.

• Korea Journal of Hospital Management
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• v.6 no.2
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• pp.173-201
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• 2001

This study purports to examine the current management and information technology related strategy of Korean hospitals and suggest the effective management strategy in the 21st century when is digital era. Specifically the study tries to analyze the changing trends of strategic orientation and investigate the general management and information technology strategy of Korean hospitals. Self-administered Questionnaires were distributed to 721 hospitals nationwide and finally 98 Questionnaires were analyzed for the study. The results of the study are as follows : 1) Half of the respondent hospitals reported that they have an analyzer orientation in 2000, whereas 19.4% were prospectors, reactors 16.4%, and defenders 14.3%. However, the respondent hospitals intended to have a prospector orientation in the future (2002), while 29.6% planned on being analyzers, 17.3% reactors, and 3.1% defenders. 2) Hospital services for improving patient satisfaction were the most common. strategy for the respondent hospitals, followed by cost containment, organizational restructuring, employee education, purchasing system change, specialization of clinical services, quality improvement of medical care, strengthening the networking with the stakeholders, public relations and marketing strategy, diversification, and installing the information system. However, the strategies of annual salary system, retrenchment of unprofitable services, merit payment based on performance were still not popular for the respondent hospitals. 3) As for the strategies related with information technology, most hospitals have not implemented actively, except for the establishment of home-pages, order communication systems, and insurance claims through electronic data interchange system. 4) There were significant differences in the level of strategy implementation in terms of the ownership, bed size, financial performance, and the top managers I knowledge of information technology. The larger bed size, the higher financial performance, the better knowledge of information technology the top managers have, the more strategies the respondent hospitals implemented. The managerial and political implications for Korean hospitals in digital era were also discussed.

• Journal of Power Electronics
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• v.14 no.3
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• pp.519-530
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• 2014

A novel simplified pulse width modulation(PWM) strategy for neutral point clamped (NPC) three-level converter is proposed in this paper.The direct output voltage modulation is applied to reduce the calculation time. Based on this strategy, several optimized control methods are proposed. The neutral point potential balancing algorithm is discussed and a fine neutral point potential balancing scheme is introduced. Moreover, the minimum pulse width compensation and switching losses reduction can be easily achieved using this modulation strategy. This strategy also gains good results even with the unequal DC link capacitor. The modulation principle is studied in detail and the validity of this simplified PWM strategy is experimentally verified in this paper. The experiment results indicated that the proposed PWM strategy has excellent performance, and the neutral point potential can be balanced well with unequal DC link captaincies.

• Journal of Power Electronics
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• v.18 no.3
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• pp.802-816
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• 2018

A digital direct phase-shift control (DDPSC) method based on the phase-shifted full-bridge LLC (PSFB-LLC) converter is presented. This work combines DDPSC with the conventional linear control to obtain a hybrid control strategy that has the advantages of linear control and DDPSC control. The strategy is easy to realize and has good dynamic responses. The PSFB-LLC circuit structure is simple and works in the fixed frequency mode, which is beneficial to magnetic component design; it can realize the ZVS of the switch and the ZCS of the rectifier diode in a wide load range. In this work, the PSFB-LLC converter resonator is analyzed in detail, and the concrete realization scheme of the hybrid control strategy is provided by analyzing the state-plane trajectory and the time-domain model. Finally, a 3 kW prototype is developed, and the feasibility and effectiveness of the DDPSC controller and the hybrid strategy are verified by experimental results.