• Journal of The Korean Society of Agricultural Engineers
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• v.54 no.2
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• pp.15-26
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• 2012

For stable and sustainable crop production, understanding the effects of climate changes on agricultural water resources is necessary to minimize the negative effects which might occur due to shifting weather conditions. Although various studies have been carried out in Korea concerning changes in evapotranspiration and irrigation water requirement, the findings are still difficult to utilize fordesigning the demand and unit duty of water, which are the design criteria of irrigation systems. In this study, the impact analysis of climate changes on the paddy water demand and unit duty of water was analyzed based on the high resolution climate change scenarios (specifically under the A1B scenario) provided by the Korea Meteorological Administration. The result of the study indicated that average changes in the paddy water demand in eight irrigation districts were estimated as -2.4 % (2025s), -0.2 % (2055s), and 3.2 % (2085s). The unit duty of water was estimated to increase on an average within 2 % during paddy transplanting season and within 5 % during growing season after transplanting. This result could be utilized for irrigation system design, agricultural water resource development, and rice paddy cultivation policy-making in South Korea.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2010.05a
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• pp.153-157
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• 2010

As the recent economic downturn continues to undermine the profits of construction industry in Korea, it has become ever more pressing to improve productivity of the industry. Since construction site management manpower staffing plan has close bearing on the productivity of construction projects, it is essential to estimate and mobilize adequate number of resources as per conditions and characteristics of each construction site. However, there are no reference approaches in practice to provide baseline for site management manpower staffing plan or estimation of manpower requirement. Therefore, this study aims to examine factors affecting productivity that warrants first and foremost consideration in development of site management manpower staffing plan during the initial phase of building construction project by conducting survey on industry stakehoders with hands-on responsibilities in construction sites and analyzing their responses. Conclusions herein will provide basic inputs for subsequent studies on development of site management manpower staffing plan as per project characteristics.

• Journal of Korean Academy of Nursing Administration
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• v.23 no.1
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• pp.76-89
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• 2017

Purpose: This study was conducted to examine the experience of nurse in comprehensive nursing care. Methods: Experiential data collected from 9 nurses through in-depth interviews. Participants were selected from nurses working in the comprehensive nursing care unit at general hospital. The main question was "Can you describe your experience in the comprehensive nursing care unit?" All interviews were recorded and transcribed, then analyzed using Colaizzi's method. Results: Nine themes were derived from the analysis: 'Practice nursing care', 'Feel thankful of the client', 'Difficulty in nursing due to absence of patients' guardian', 'Tired of over-demanding patient and distrust of guardian', 'Confusion regarding one's identity as a nurse', 'Not enough to support system', 'Insufficient pre-training for nurse and client', 'Requirement of work establishment for nurse and nurse aid', 'Concerns about low rewards and high safety accidents'. Conclusion: As a comprehensive nursing service, the nurses provided total patient care, and patient satisfaction and expression of appreciation increased. However, disadvantages were identified, such as patients' excessive needs, communication difficulties, lack of support systems, low compensation, and a high number of safety accidents. Therefore, systematic comprehensive nursing will be achieved if these shortcomings are addressed.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.7
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• pp.3393-3412
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• 2017

As a main challenge in network virtualization, virtual network embedding problem is increasingly important and heuristic algorithms are of great interest. Aiming at the problems of poor correlation in node embedding and link embedding, long distance between adjacent virtual nodes and imbalance resource consumption of network components during embedding, we herein propose a two-stage virtual network embedding algorithm NA-PVNM. In node embedding stage, resource requirement and breadth first search algorithm are introduced to sort virtual nodes, and a node fitness function is developed to find the best substrate node. In link embedding stage, a path fitness function is developed to find the best path in which available bandwidth, CPU and path length are considered. Simulation results showed that the proposed algorithm could shorten link embedding distance, increase the acceptance ratio and revenue to cost ratio compared to previously reported algorithms. We also analyzed the impact of position constraint and substrate network attribute on algorithm performance, as well as the utilization of the substrate network resources during embedding via simulation. The results showed that, under the constraint of substrate resource distribution and virtual network requests, the critical factor of improving success ratio is to reduce resource consumption during embedding.

• Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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• 2006.11a
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• pp.351-354
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• 2006

In underwater environment, the control of AUV is difficult, because of the existence of parameter uncertainties and disturbances as well as highly nonlinear and coupled system dynamics. The requirement for the simple and robust controller which works satisfactorily in those dynamical uncertainties, call for a design using the PD or sliding mode controller. The PD controller is very popular controller in the industrial field and the sliding mode controller has been used successfully for the AUV controller design. In this paper, the two controllers arc designed for ISiMI(Integrated Submergible Intelligent Mission Implementation) AUV and the performances are compared by numerical simulation under the modeling uncertainty and disturbances. The design process of PD and sliding mode controller for ISiMI AUV and simulation results are included to compare the performances of the two controllers.

• International Journal of Quality Innovation
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• v.6 no.2
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• pp.59-89
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• 2005

Manufacturing Resources Planning (MRPII) is one kind of manufacturing information system that can help manufacturing companies gain competitive advantages. It is estimated that more than one hundred MRPII systems are available in the market, many of them are mature enough to solve most operational issues in accordance with users' requirements. More often than not, many of these systems provide more functions than a company expects. Manufacturing companies worldwide have attempted to implement these MRPII systems, however, many companies experienced failure (Turbide, 1996) due to managerial rather than technical issues. The authors propose an approach utilising a roadmap to integrate BPR and the MRPII implementation in order to overcome this difficulty. A detail road map is developed to guide this implementation, which is designed using a hierarchical analysis technique known as Integrated DEFinition Method (IDEF). IDEF is a systematic manufacturing management and integration-modeling tool. The proposed approach is implemented and illustrated using a reference company and the results indicated that 66% reduction in errors for maintaining the bills of materials system; 99% reduction in time to carry out material requirement planning; and 70% reduction in time previously taken for non-productive discussions.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.13 no.2
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• pp.217-224
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• 2002

One of the dominant aspects governing the accuracy of the FDTD method is the size of the spatial increment used in the model. The effect of having reduced cell size is to increase the computational time and memory requirements. To overcome these problems, sub-gridding technique can be used. This implies that the application of a sub-grid cell would provide improved accuracy without increasing the run time and computer resources considerably. In this paper, we describe the three dimensional sub-gridding technique that is applied to model only the fine structure region of interest. The detailed solution procedure is described and some test geometries were solved by both uniform grid and sub-grid models to validate the suggested approach. While keeping the accuracy, the computational time becomes 6 times faster and the memory requirement is reduced by a factor of 2.5 comparing to the conventional FDTD approach.

• Journal of Family Resource Management and Policy Review
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• v.21 no.3
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• pp.161-182
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• 2017

This qualitative case study explored seven non-certified firms' family-friendly cultures and their responses to the family-friendly certification through interviews with the human resources managers. The results from the data analysis revealed within firm's differences and a gap among those firms. In addition, their responses to the family-friendly certification were classified into three categories: a positive group, indifference group, and negative group. From the results of the firms' various family-friendly cultures and the firms' various responses to the family-friendly certification, we suggested several issues on the family-friendly certification system's improvement and the government's management and supervision of the legal requirement to ensure workers' work-life balance and the firm's autonomy plan for its' own family-friendly culture.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.3
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• pp.399-409
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• 2021

This study examines whether oil and gas companies comply with the requirements of the International Financial Reporting Standards (IFRS) 6 on Exploration and Evaluation (E&E) of Mineral Resources. For this purpose, a comprehensive checklist divided into eight different parameters was prepared by including every requirement of IFRS 6. While building on the previous studies, the annual reports of the top five Indian and top five Global companies engaged in this business have been investigated in detail against the checklist using content analysis as the research method. Results show that a majority of the companies (both Indian as well as global companies) have not been complying with the requirements of IFRS 6. In five out of eight parameters the companies have not complied with even half of the requirements. The overall compliance ratio is as low as 41.54 percent and 43.68 percent for Indian and Global companies respectively. While analyzing the non-compliance, it has been observed that despite having distinct accounting standards, different kinds of companies are reporting differently. Thus, it is not in line or consistent with the goal of IFRS i.e., to establish a universal language for the companies to prepare the accounting statements. The research findings identify the exact area of non-compliance while citing the relevant paragraph number of IFRS 6.

• Journal of Science Education
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• v.41 no.2
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• pp.267-280
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• 2017

The purpose of this study is to review the foundation of the representative early scientific societies and their major activities. The documents, books, and literature related to this study were collected through internet websites (e.g., google scholar, wikipedia) and analyzed by the qualitative content analysis method. The result of this study shows that requirement for the necessary resources to acquire or to prepare the instruments for the experiment is significantly increased with the rising importance of the experiments to conduct the scientific methods. As a consequence, scientists faced urgent necessities to conduct scientific experiments with cooperation and exchange of the newest information by establishing a community beyond the independent and individual research activity. Establishment of the scientific societies is the result of these necessities. At the beginning of the scientific societies, the resources are provided by either wealthy patron or member contribution or public through foundation of government organization. This study provides the implications for future scientific societies.