• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.3
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• pp.648-654
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• 2010

Request operations and release operations occur repeatedly in resource allocation systems. The process requesting a resource acquires one by any priority-based mechanism, and returns the resource after some periods. In this system, resource failures lead to delay of resource allocation, or to termination of process holding the failed resource. To analyze this process effectively, this paper designs a probabilistic ACSR, a process algebra that extends ACSR with the probabilistic choice operation. The ability to express/analyze both request-release rates and failure-recovery rates is illustrated using probabilistic ACSR.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.9
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• pp.1947-1954
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• 2011

There are various attacks such as tampering, bypassing and spoofing which are caused with system-wide vulnerabilities of Windows operating system. The underlying operating system is responsible for protecting application-space mechanisms against such attacks. This paper provides the implementation of mandatory access control known as multi-level security (MLS) rating with TCSEC-B1 level on th kernel of Windows$^{TM}$. By adding especially the protection feature against tampering memory of processes to the security kernel, this implementation meets the responsibility against system-wide vulnerabilities.

• Informatization Policy
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• v.24 no.4
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• pp.68-78
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• 2017

Malicious codes are currently becoming more complex and diversified, causing various problems spanning from simple information exposure to financial or psychologically critical damages. Even though many researches have studied using reverse engineering to detect these malicious codes, malicious code developers also utilize bypassing techniques against the code analysis to cause obscurity in code understanding. Furthermore, rootkit techniques are evolving to utilize such bypassing techniques, making it even more difficult to detect infection. Therefore, in this paper, we design the analysis process as a more agile countermeasure to malicious codes that bypass analysis techniques. The proposed analysis process is expected to be able to detect these malicious codes more efficiently.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.83-89
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• 2007

This study started with many experiences about maturity evaluation and efficiency improvement of Project Management information system, and need for IT systems for performing of strategy. The objective of this study is 1)to evaluate processes and IT systems based on CSF in strategy perform phase, 2)to propose method of sustainable evaluation and improvement, and 3)with KPI and CSF, to evaluate and improve PMIS. Moreover, we suggested IT architecture framework for basement of improving process and resources.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.859-863
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• 2007

Most of construction companies recognize importance of immaterial assets in an age of unlimited competition. And construction companies that are concerned about Knowledge Management have used the system of it for critical ability of company. But they used the system for the storage of construction knowledge. So, the present KM system was gradually under operating. To introduce KMS based on Business Process Management(BPM), the purpose of this study is to consider BPM and KMS through the existing researches. we deduce the concept for introducing KMS based on BPM and present the expected effectiveness of it. Finally, we present the prototype of system for KMS based on BPM.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.17 no.10
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• pp.1117-1130
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• 1992

In this study, we propose a protocol for the communication between process groups required during message transfers. This is accomplished by an efficient process management of distributed systems connected by computer networks. For a single process group, a multicast protocol was proposed, which can control message flows while maintaining the order of messages sent or delivered. Through use of membership-related services, a member composing a process group may leave and join the current a membership anytime during execution. Moreover, message delivery can be delayed by using a logical vector time stamp. The functionality of the message delivery includes a virtual synchronization in response to a change in membership.

• Journal of the Korea Society for Simulation
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• v.26 no.3
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• pp.125-139
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• 2017

Recently, interest in improving the quality of EMS(emergency medical services) has been increasing. Much effort is being made to innovate the EMS process. The rapid progress of ICT technology has accelerated the automation or intelligence of EMS processes. This study suggests an emergency room management method based on real-time data considering resource utilization optimization, minimization of human error and enhancement of predictability of medical care. Emergency room operation indices - Emergency care index, Short stay index, Human error inducing index, Waiting patience index - are developed. And emergency room operation rules based on these indices are presented. Simulation was performed on a virtual emergency room to verify the effectiveness of the proposed operating rule. Simulation results showed excellent performance in terms of length of stay.

• Journal of the Korea Institute of Building Construction
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• v.19 no.1
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• pp.87-93
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• 2019

In recent years, BIM services have been used in many construction projects. However, they are raising the question that there are many differences between what was initially proposed and what was actually done. In the IT sector, a method called as SLA is used to perform an assessment of the services delivered to the IT service project. In this respect, this study intends to introduce this method into building construction projects to use BIM in order to propose evaluation criteria and the evaluation process for SLA-based BIM service. The BIM service assessment process and criteria presented are judged to help introduce consistent and systematic BIM services in construction projects.

• Journal of Korean Society for Geospatial Information Science
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• v.22 no.4
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• pp.81-89
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• 2014

In Korea, National spatial data infrastructure has implemented in order to integrated manage and share the national spatial information producted by public agencies and local governments. The necessities of systematic quality management are raised, because information, which is generated by different agencies, is integrative managed by national level. In this paper, the establishment of BPR(Business Process Reengineering) for national spatial data infrastructure quality management system. Quality management business is defined as quality management object definition, quality measuring, evaluation and analysis, and quality enhancement process. Next, activities for each process are designed. For the quality management business, business rule(BR) is required for determining error. We derive the BR for six objects(legal-dong, railway boundary, railway centerline, road boundary, road centerline, building) among the basic spatial information. Other information's BR can be generated by using the derivation method described in this paper. Based on the BPR of this paper and derived BR, national spatial data infrastructure quality management system can be implemented in the future.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2008.11a
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• pp.501-504
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• 2008

Recently, as a solution to adapt to changes in managerial environments, many companies introduce the BPM(Business Process Management) to achieve the standardization and optimization of internal/external company processes. The BPM is being highlighted compared to other managerial techniques for its diverse values such as fast responses to market changes, ensured transparency of processes, continued opportunities for improvements etc and the necessity is highlighted in the construction sector too. Therefore, this study compared the characteristics, effects of introduction and things to be improved between the BPMs introduced by various industrial sectors as an effort to establish a work process based managerial system in the construction sector and thereby drew 5 areas to be supported and compared analyzed the areas to be supported in various sectors by giving additional scores using the 3 scales method. This study is a stage to reflect the result in the construction sector where the introduction of the BPM is insufficient and by analyzing the characteristics and weak points of those BPMs introduced into various industrial sectors, this study expects effective BPM introductions and developments of construction companies.