• Title/Summary/Keyword: Time Resource

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A Framework of Outsourcing Decision-Making for Human Resource Information Systems

  • Lee, Chung-Shing;Lee, C.Christopher;Kwon, He-Boong
    • 한국경영정보학회:학술대회논문집
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    • 2007.06a
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    • pp.551-556
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    • 2007
  • This paper attempts to develop a framework for interrelationships among human resources information systems (HRIS), outsourcing, and corporate culture. This research investigates impacts of outsourcing HRIS on corporate culture. In this paper, we hypothesize that outsourcing corporate HRIS is less appealing (1) if the quality of product and customer service matters for a firm, (2) if a firm is concerned with a loss of intellectual property, and (3) if a firm requires maintenance of a distinctive human resource service function that is capable of meeting the challenges of fast changing customer demands in a dynamic business environment. In addition, this study argues companies must be aware of the total costs associated with HRIS before outsourcing its human resource functions. Finally, the impact on employee morale and performance must also be considered By outsourcing HRIS, managers will be able to spend more time and resources dedicated to an employee's professional career development.

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Estimating the Biological Growth Function of Korean Anchovy: A Maximum Entropy Approach (한국 연근해 멸치자원량 추정 - Maximum Entropy기법의 응용 -)

  • Kim, Gi Cheol;Kwon, Oh Sang
    • Environmental and Resource Economics Review
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    • v.9 no.2
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    • pp.285-309
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    • 2000
  • One of the main issues in natural resource economics is estimating the amount of stock and the biological growth functions of renewable natural resources. Since the stock level is not directly observed the usual econometric approaches cannot be employed for this purpose. The maximum entropy approach has been suggested as a useful alternative to estimate the dynamic model of natural resource use. This study estimates the stock and the growth function of Korean anchovy using the data for yield and yield efforts. The results show that the current level of anchovy yield exceeds its maximum sustainable yield, which implies that the stock will decrease substantially over time.

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Strong NP-completeness of Single Machine Scheduling with Resource Dependent Release Times and Processing Times (Release와 Processing time이 투입자원에 종속적인 단일설비 일정계획문제의 Strong NP-completeness 분석)

  • Lee, Ik Sun
    • Korean Management Science Review
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    • v.31 no.2
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    • pp.65-70
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    • 2014
  • This paper considers a single machine scheduling problem to determine release and processing times where both the release times and processing times are linearly decreasing functions of resources. The objective is to minimize the sum of the associated resource consumption cost and scheduling cost including makespan, sum of completion times, maximum lateness, or sum of lateness. This paper proves that the scheduling problem is NP-hard in the strong sense even if the release times are constant.

Distribution of five rare plants in Korea

  • Son, Sung-Won;Lee, Byung-Chun;Yang, Hyung-Ho;Seol, Ye-Joo
    • Korean Journal of Plant Taxonomy
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    • v.41 no.3
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    • pp.280-286
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    • 2011
  • The natural habitats and distribution of five rare plants were recently discovered in Korea. Salomonia oblongifolia DC., which grows in mountain wetlands, was found in Gijang-gun, Busan, Gokseong-gun, Jeollanam-do, and Shinan-gun, Jeollanam-do. Glaux maritima var. obtusifolia Fernald, which grows along the coast, was found in Yangyang-gun, Gangwon-do, Pohang-si, Gyeongsangbuk-do and Buk-gu, Ulsan. Tillaea aquatica L. and Limosella aquatica L., which was previously not known to be present in Korea, were discovered in Gijang-gun, Busan for the first time. Apocynum lancifolium Russanov, which has a narrow distribution range in Korea, was also found in Samcheok-si, Gangwon-do, Ansan-si, Gyeonggi-do, Siheung-si, Gyeonggi-do, Jung-gu, Incheon, Yeongdeok-gun, Gyeongsangbuk-do and Shinan-gun, Jeollanam-do.

A study on the allocation of Radio Resource in Mobile Communication. (이동 통신에서의 무선 자원 할당에 관한 연구)

  • 조석팔
    • The Journal of Information Technology
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    • v.4 no.3
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    • pp.65-75
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    • 2001
  • Code-division multiple access has been widely accepted as the major multiple access scheme in mobile communication systems. Wide-band CDMA and its hybrid associate time-division CDMA are key elements in the mobile communication. Since 10 years ago, there has been enormous research activity in analysis of the capacity of these CDMA-based systems. Recently, upgrading service, high quality and the different service classes in radio resource allocation has recently increased. This paper presents an overview of Radio Resource Allocation on the CDMA-based systems that are flexible, support traffic services, minimize call blocking rate and have acceptable radio resource utilization.

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Synthesis of Alinite-Calciumchloroaluminate System Cement Using Solid State Waste

  • Cho, Jin-Sang;Han, Gi-Chun;Kim, Hyung-Seok;Ahn, Ji-Whan;Kim, Hwan;Lee, Hyoung-Ho
    • Proceedings of the IEEK Conference
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    • 2001.10a
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    • pp.581-585
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    • 2001
  • Alinite-Calciumchloroaluminate system clinker was synthesized from solid state waste. The raw materials were municipal incineration ash, sewage sludge, limestone and clay. ecocement was prepared by the mixing of synthesized clinker and optimum amount of gypsum and its hydrolysis characteristic was investigated. X-ray diffraction, conduction calorimeter and reflecting microscope were used to analyze structural and physical properties. The main phase of clinker were alinite, calcium chloroaluminate. $C_2$S, $C_3$S. From the results of hardening time, hydration reactivity of synthesized all samples was faster than that of ordinary portland cement.

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Dynamic Decisions using Variable Neighborhood Search for Stochastic Resource-Constrained Project Scheduling Problem (확률적 자원제약 스케줄링 문제 해결을 위한 가변 이웃탐색 기반 동적 의사결정)

  • Yim, Dong Soon
    • Journal of Korean Institute of Industrial Engineers
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    • v.43 no.1
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    • pp.1-11
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    • 2017
  • Stochastic resource-constrained project scheduling problem is an extension of resource-constrained project scheduling problem such that activity duration has stochastic nature. In real situation where activity duration is not known until the activity is finished, open-loop based static policies such as activity-based policy and priority-based policy will not well cope with duration variability. Then, a dynamic policy based on closed-loop decision making will be regarded as an alternative toward achievement of minimal makespan. In this study, a dynamic policy designed to select activities to start at each decision time point is illustrated. The performance of static and dynamic policies based on variable neighborhood search is evaluated under the discrete-event simulation environment. Experiments with J120 sets in PSPLIB and several probability distributions of activity duration show that the dynamic policy is superior to static policies. Even when the variability is high, the dynamic policy provides stable and good solutions.

A Preliminary Study on the Benefits Sought of Preschool Child Education Commodity (취학전 자녀의 교육상품에 대한 어머니의 기대편익에 관한 탐색적 연구)

  • Kim Yoo Kyung;Lee Ki young
    • Journal of Family Resource Management and Policy Review
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    • v.8 no.3
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    • pp.95-111
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    • 2004
  • The overheated education of preschool child has been an social issue lately. The purposes of this study are to identify housewives' benefits sought of preschool child education commodity. Specific research question are as follows : (1) What are the benefits sought of preschool child education commodity? (2) What are the sub-dimensions of that? For this study, interview data were collected through F.G.I.(Focus Group Interview) of 5 housewives and in-depth interviews of 2 housewives. The interview helped to understand housewives' realities of their preschool child education. For later empirical analysis, the data for 400 full-time housewives with preschool child living in Seoul were also collected. The result of one-way ANOVA showed that the sub-dimensions of benefits sought of preschool child education commodity are composed of 'conformity', 'early stimulation', and 'preparation for school'.

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A Study on the Performance Analysis of Process Model with Resource Constraints in Concurrent Engineering Environment (동시공학 환경에서 자원제약이 있는 프로세스 모델의 성능분석에 관한 연구)

  • 강동진;이상용;유왕진;정용식
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.22 no.51
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    • pp.231-240
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    • 1999
  • A major concern in Concurrent Engineering is the control and management of workload in a period of process. As a general rule, leveling the peak of workload in certain period is difficult because concurrent processing is comprised of various processes, including overlapping, paralleling looping and so on. Therefore, the workload management with resource constraints is so beneficial that effective methods to analyze design process are momentous. This study presents the Timed Petri Nets approach of precedence logic networks, and provides an alternative for users to analyze constraint processes to resolve conflicts of resources. Another approach to Continuous Time Markov Chain using Stochastic Petri Nets is also proposed. These approaches are expected to facilitate resolving resource constrained scheduling problems more systematically in Concurrent Engineering environment.

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Resource Allocation to Support QoE of Handovers in Overlaid Macro-Femto Networks

  • Lee, Moon-Ho;Lee, Jong-Chan
    • Journal of the Korea Society of Computer and Information
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    • v.21 no.12
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    • pp.73-79
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    • 2016
  • This paper proposes a novel resource allocation scheme which enables to guarantee the quality of experience (QoE) for handovers from femtocell to macrocell and vice versa, and between femtocells in the overlaid macro-femto networks. The proposed scheme guarantees QoE to a certain extent during handover by utilizing a fixed amount of radio resource reserved in advance for the dedicated use to support QoE. We take both the type of the handover and the temporal sensitiveness characteristics of user services into consideration in order to support QoE. Performance of our scheme is analyzed by simulation with respect to the outage probability and total throughput.