• The KIPS Transactions:PartA
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• v.8A no.2
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• pp.91-98
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• 2001

TCP/IP based remote system using internet presented the method to access and control all the types of resources connected to network system over time and space. In this paper, We studied a resource control method through a mutual communication of a system association composed of service user, provider, and manager of the network system for the web based remote control system. The service users require the resources, and its providers are a variety of devices and digital electronic products which can provide the services in a network system. The service manager who operates the whole system performs the role to interconnect its users with its providers. Through an experiment, an implemented system confirmed flexibility, stability, and extensibility of the method presented in this paper.

• Journal of Mechanical Science and Technology
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• v.19 no.5
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• pp.1123-1130
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• 2005

In view of the lack of efficient coordination of interdependent task in the collaborative design system, the mechanisms for temporal and resource coordination problems are established based on Petri Nets, respectively. Both of the mechanisms are encapsulated and implemented in the coordination component so as to increase the flexibility and acceptability of the system. We model the CSCW system based on Petri Nets for simulation, analysis and optimization. A case study on the overhead traveling crane is given to demonstrate and validate our theory.

• Environmental and Resource Economics Review
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• v.9 no.4
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• pp.597-619
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• 2000

Marketable permit system (MPS) is a economic incentive instrument that allows polluters to achieve static and dynamic efficiency, However, Korea's atmospheric regulations are primarily based upon command and control (CAC) system and partly upon economic incentive instruments, which fail to realize its relative effectiveness, Accordingly, an introduction of MPS has been recommended with the cost effectiveness analysis in numerous studies, The literature, however, did not consider the relationship between MPS and the existing regulations, which is a key factor for the successful introduction of MPS, This paper provides a set of principles to judge how the existing regulations are reconciled with the introduction of MPS, In addition, authors execute an empirical study to show MPS's cost effectiveness when regulators apply MPS in Ulsan area for the abatement of sulfur dioxide, The results suggest that the regulations such as fuel regulation should be excluded when implementing MPS, and a flexibility in legal and regulatory system is to be required in order to secure a successful implementation of MPS.

• Journal of Family Resource Management and Policy Review
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• v.3 no.1
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• pp.123-134
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• 1999

This study investigated the participation of household labor of employed wives and husbands and it’s influential variables. The subjects of this study were 287 couples(employed wives and husbands) living in Seoul. The data were analyzed by various statistical methods such as Frequency, Percentile, Pearson’s Correlation Analysis and Multiple Regression Analysis. The results of this research were as follows: 1. Wives spend on average of 7 hours and 23 minutes(per day), of 6 hours and 35 minutes(per weekday), of 12 hours and 7 minutes (per weekends) on household labor, whereas husbands spend on average of hours and 38 minutes(per day), of 2 hours and 11 minutes(per weekday), of 5 hours and 18 minutes(per weekends) on household labor. Wives performed most childcare, next, food of the household labors. Husbands performed most childcare, next housing of the household labors. 2. In wives’participation of household labor, the influencial variables were the number of child, wive’s age and wive’s education level. In husbands’participation of household labor, the influencial variables were the number of child, husband’s sex role attitude, wive’s age, and flexibility of wive’s work.

• Journal of Family Resource Management and Policy Review
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• v.4 no.1
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• pp.47-57
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• 2000

This study was investigated the marital satisfaction of expanding dual-earner couples and it’s influential variables. The sample consisted of 226 husbands and wives in dual-earner families living in Seoul. The data were analyzed by various satistical methods such as Frequency, Percentile, One-way analysis, t-test and Multiple Regression Analysis. The results of this research were as follows: 1. The level of marital satisfaction was higher for husbands than wives. 2. Husbands’marital satisfaction was significantly affected by husbands’age, husbands’sex role attitude, wives’occupation, flexibility of wives’work. 3. Wives’marital satisfaction was significantly affected by husbands’income, husbands’sex role attitude, husbands’participative times of household labor and wives’participative time of household labor.

• JSTS:Journal of Semiconductor Technology and Science
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• v.11 no.1
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• pp.51-58
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• 2011

Extensible processors provide an efficient mechanism to boost the performance of the whole system without losing much flexibility. However, due to the intense demand of low cost and power consumption, customizing an embedded system has been more difficult than ever. In this paper, we present a framework for custom instruction generation considering both area constraints and resource sharing. We also present how we can speed up the process through pruning and library-based design space exploration.

• Journal of the Korea Safety Management & Science
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• v.13 no.1
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• pp.115-119
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• 2011

To help the corporations ensure more efficient production management, the Enterprise Resource Planning (ERP) system has been introduced in operation, together with a variety of approaches to make improvements in terms of quality and productivity issues. Yet, with the different types of ERP systems in operation, many companies are going through many difficulties not only in having greatly reduced work efficiency but also in making prompt decisions from the entire group-based integrated information. In this study, the analysis was made on their own ERP systems and working processes operated by a company running the multiple number of productions from the domestic and the overseas suppliers, in order to support their interacted work flow regarding their products and help improve the work efficiency by establishing standardized ERP system. Through this, it is expected to ensure more competitive system in operation by securing the flexibility in the production as well as efficient resource distribution under the corporate context of cost reduction and quality improvement.

• Proceedings of the KIEE Conference
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• 1996.07b
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• pp.695-697
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• 1996

Main theme of this paper is to evaluate the degree of risk due to the uncertainly of the future, especially for the long-term integrated resource planning (IRP) in electric utility. The measures of uncertainty for dealing with planning risk in the IRP context include robustness and flexibility of each candidate resource plan. The uncertainty indices are treated as decision criteria, or attributes, same as economic efficiency or reliability criteria in the multi-attribute decision-making (MCDM) procedure of IRP.

• Journal of information and communication convergence engineering
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• v.21 no.3
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• pp.185-191
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• 2023

The Internet of Things (IoT) can be defined as the connection of devices, sensors, and actors via the Internet to a single network to provide services to end-users. Owing to the flexibility and simplicity of IoT devices, which impart convenience to end-users, the demand for these devices has increased significantly in the last decade. To make these systems more scalable, achieve a larger number of connected devices, and achieve greater economic success, it is vital to develop them by considering parameters such as security, cost, bandwidth, data rate, and power consumption. This study aims to improve energy efficiency and prolong the lifetime of IoT networks by proposing a new approach called the constrained application protocol CoAP45. This approach reduces the number of updates to the CoAP server using a centralized resource. The simulation results show that the proposed approach outperforms all existing protocols.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.11 no.2
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• pp.73-81
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• 2011

In this paper, we studied on the building models of open educational resource service system for download or upload their own educational content to be shared with the others without worrying about copyright infringement. We first analyzed the building models of the international OER(Open Educational Resource) service sites. And then, based on these results, we present the new service models suitable to be built the open educational resource service system in phases. The proposed models have the flexibility to accommodate the needs of users and have the advantage that the copyright-related issues of the existing 'National Educational Information Sharing System' could be solved step by step.