• Journal of the Korean Institute of Intelligent Systems
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• v.24 no.2
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• pp.218-224
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• 2014

The logic-based scheduling language RCPSV may be used to model resource-constrained project scheduling problems with variants for minimizing the project completion time. A diagram-based, nonredundant enumeration algorithm for the RCPSV-problem is proposed and the correctness of the algorithm is proved.

• Journal of the military operations research society of Korea
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• v.3 no.1
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• pp.123-136
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• 1977

This thesis presents a modification and extension to the Burgess and Killebrew heuristic resource leveling procedure for project networks. In contrast to previous algorithms appearing in the literature, the objective function of this algorithm. is the minimization of the sum of the squared errors in each time period (deviations around the mean usage) of all resources over the duration of the project. This objective function continues the search for an improved schedule beyond that of previous algorithms with their associated objective functions. One important feature is that the algorithm tends to reduce the number of periods that a resource is idle during its duration on the project.

• Proceedings of the IEEK Conference
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• 2002.06a
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• pp.97-100
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• 2002

In this paper, we analyze All IP network architecture and VoIP Service procedure using U Multimedia domain. And, we propose QoS Resource management scheme using with statistical measurement based admission control 8l rate based borrow bandwidth to improve real-time traffic QoS guarantee.

• Journal of KIISE:Computer Systems and Theory
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• v.33 no.6
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• pp.337-343
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• 2006

The Stack Resource Policy (SRP) is a real-time synchronization protocol with some distinct properties. One of such properties is early blocking; the execution of a job is delayed instead of being blocked when requesting shared resources. If SRP is used with dynamic priority scheduling such as Earliest Deadline First (EDF), the early blocking requires that a scheduler should select the highest-priority job among the jobs that will not be blocked, incurring runtime overhead. In this paper, we analyze the runtime overhead of EDF scheduling when SRP is used. We find out that the overhead of job search using the conventional implementations of ready queue and job search algorithms becomes serious as the number of jobs increases. To solve this problem, we propose an alternative data structure for the ready queue and an efficient job-search algorithm with O([log$_2n$]) time complexity.

• The Journal of Society for e-Business Studies
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• v.22 no.4
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• pp.103-115
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• 2017

Globally, frequency and scale of natural disasters are growing, also the damage is increasing. In view of the damage by natural disasters for several years, it is true that Korea is not free from such damages. In this paper, we propose a process to efficiently manage recovery resources in case of disaster damage. We utilize the IoT technology to detect the resource status in real time, and configure the process so that the state and movement of the recovery resource can be grasped in real time through the resource activity recognition module. In addition, we designed the database that is necessary to actualize it, and developed and experimented resource activity recognition module using smart-phone sensors. This will contribute to building a quick and efficient disaster response system.

• Journal of Family Resource Management and Policy Review
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• v.23 no.3
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• pp.1-23
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• 2019

This study was aimed at exploring the differences in time use and time famine among college students ages 18 to 29, with a focus on gender and employment status, and to investigate the determinants of time famine. Data were from the 2014 Time Use Survey by the Korea National Statistical Office. Descriptive statistics, chi-square test, t-test, and logistic regression were used for the statistical analyses. The major findings are as follows. First, the employed spend significantly more time on work and less time studying than the unemployed, and females spend significantly more time on household work and less time on leisure than males. Second, employed students had higher levels of time famine than unemployed students. Third, irrespective of employment status, the education level of students' parents was identified as a determinant of time famine. Other determinants of time famine were age, job, work, and study time for employed students and gender, income, household work, and leisure time for unemployed students.

• Journal of Family Resource Management and Policy Review
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• v.9 no.2
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• pp.41-57
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• 2005

The purpose of this study was to explore various types of couples' time use and to investigate the characteristics of each type. The subject of the study consisted of 96 employed wives and their husbands and 215 unemployed wives and their husbands living in Seoul. The data were analyzed by descriptive statistics and cluster analysis using SAS 8.2 program. The major findings were as follows: The time use of wives and their husbands both on one weekday and one holiday was classified as personal time, paid work time, housework time, and free time. These 4 categories of time were basic elements to classify the types of couples' time use in the cluster analysis. As a result of the cluster analysis, four types of time use of couples were yielded. These were called as 'personal time oriented type', 'paid work time oriented type', 'housework time oriented type' and 'free time oriented type'.

• The Journal of the Korea Contents Association
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• v.20 no.6
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• pp.640-652
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• 2020

This study identifies the statues of the resource development in residential facilities for people with disabilities to review the current level and propose necessary supporting measures to revitalize resource development in this current time when the importance of resource development is rising for social welfare organizations. Specifically, this study conducted a survey on the current statues and needs for resource development and focus group interviews to acquire in-depth opinions on the need for resource development and supporting measures in 255 nationwide residential facilities for the disabled. The results showed that 50% of the resource development for the residential facilities depended on private donations, while the presence of exclusive workforce made differences among development plans, performance and achievement. Also, their resource development methods were limited around direct requests, such as personal recommendations, as they are faced with challenges such as inadequate related expertise and technologies for resource development, lack of exclusive workforce, and lack of interest in available facilities in the local community. With reference to these findings, this study proposes the following development measures: placement of exclusive workforce, adoption of diverse resource development methods, transparent and reliable resource development, and preparation for systematic step-by-step professional training on resource development.

• The KIPS Transactions:PartC
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• v.13C no.2 s.105
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• pp.227-234
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• 2006

In this paper, we propose a window based resource reservation scheme to minimize an waste bandwidth due to resource reservation in mobile networks. Specially, this scheme decides a proper timing to reserve resource by using the number of movement, which is provided by the differentiated handoff estimation model, among inner regions. In the previous resource reservation scheme[6], it requests a resource reservation to neighboring cells as soon as a mobile host enters or creates into a cell. But, after a proper time based on the number of movements in the differentiated handoff estimation model passes, the proposed scheme requests a resource reservation to neighboring cells. Because of this reason, it can improve resource utilization on mobile networks. And, this scheme differentiates resource reservation according to a request ratio for resource reservation to each neighboring cell. Also, this scheme improves resource reservation acceptance rate and bandwidth utilization.

• Journal of Communications and Networks
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• v.8 no.4
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• pp.401-409
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• 2006

Orthogonal frequency division multiplexing (OFDM) and multiple input multiple output (MIMO) technologies provide additional dimensions of freedom with spectral and spatial resources for radio resource management. Multi-dimensional radio resource management has recently been identified to exploit the full dimensions of freedom for more flexible and efficient utilization of scarce radio spectrum while provide diverse quality of service (QoS) guarantees. In this work, a multi-dimensional radio resource scheduling scheme is proposed to achieve above goals in hybrid orthogonal frequency division multiple access (OFDMA) and space division multiple access (SDMA) systems. Cochannel interference (CCI) introduced by frequency reuse under SDMA is eliminated by frequency division and time division between highly interfered users. This scheme maximizes system throughput subjected to the minimum data rate guarantee. for heterogeneous users and transmit power constraint. By numerical examples, system throughput and fairness superiority of the our scheduling scheme are verified.