• Journal of Electrical Engineering and Technology
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• v.12 no.4
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• pp.1348-1356
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• 2017

Integration of wind generators with the conventional power plants will raise operational challenges to the electric power utilities due to the uncertainty of wind availability. Thus, the Generation Scheduling (GS) among the online generating units has become crucial. This process can be formulated mathematically as an optimization problem. The GS problem of wind integrated power system is inherently complex because the formulation involves non-linear operational characteristics of generating units, system and operational constraints. As the robust tool is viable to address the chosen problem, the modern bio-inspired algorithm namely, Grey Wolf Optimization (GWO) algorithm is chosen as the main optimization tool. The intended algorithm is implemented on the standard test systems and the attained numerical results are compared with the earlier reports. The comparison clearly indicates the intended tool is robust and a promising alternative for solving GS problems.

• Journal of Korean Library and Information Science Society
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• v.30 no.4
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• pp.59-86
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• 1999

The purpose of this study is measure library use behaviors among faculty members and faculty awarenesses toward bibliographic education for undergraduates. Questionnaire listings offered by C university library were sent 200 faculties. 56% responded questionnaires were analyzed. The results are as follows. $\circledS1$They used library one more times per a month and during vocations & prefered to use scholarly journals. $\circledS2$They wanted 'subscription for scholarly journals,' 'inter-library loan,' but they seldom experienced in inter-library loan. $\circledS3$They gained the library skills in experiences and they had the average level of library skills. They used secondary sources and recognized traditional reference services. $\circledS5$They intended to bibliographic education for the faculty and the wanted group of 10 less and education for the new faculty members. $\circledS6$They though the students should be able to learn needed library skills. but wasn't necessary. $\circledS7$They intended to intergrate bibliographic education and cooperate with librarians. But they hadn't been familiar with librarians and encouraged students to use library.

• Earthquakes and Structures
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• v.10 no.4
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• pp.893-911
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• 2016

There are some modifications in the usage purpose of historical structures due to varying needs and changing conditions. However, those modifications can damage the structural system and the system stability. This study focuses on the investigation of the functional effects and usage modifications on the system stability. In this study, three different finite element models of the Hayati $Teknecio\breve{g}lu$ Mansion in Turkey are developed and the seismic responses of the models are investigated. Results of the analyses show that usage modifications might be considered as risky in terms of creating problems for seismic performance.

• Computers and Concrete
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• v.10 no.6
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• pp.587-607
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• 2012

The purpose of this research is to propose a design technique of concrete mix proportions satisfying service life through genetic algorithm (GA) and neural network (NN). For this, thirty mix proportions and the related diffusion coefficients in high performance concrete are analyzed and fitness function for diffusion coefficient is obtained considering mix components like w/b (water to binder ratio), cement content, mineral admixture (slag, flay ash and silica fume) content, sand and coarse aggregate content. Through averaging the results of 10 times GA simulations, relative errors to the previous data decrease lower than 5.0% and the simulated mix proportions are verified with the experimental results. Assuming the durability design parameters, intended diffusion coefficient for intended service life is derived and mix proportions satisfying the service life are obtained. Among the mix proportions, the most optimized case which satisfies required concrete strength and the lowest cost is selected through GA algorithm. The proposed technique would be improved with the enhancement of comprehensive data set including wider the range of diffusion coefficients.

• Journal of Computing Science and Engineering
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• v.9 no.2
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• pp.108-117
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• 2015

Interrupt handling is generally separated from process scheduling. This can lead to a scheduling anomaly and priority inversion. The processor can interrupt a higher priority process that is currently executing, in order to handle a network packet reception interruption on behalf of its intended lower priority receiver process. We propose a new network interrupt handling scheme that combines interrupt handling with process scheduling and the priority of the process. The proposed scheme employs techniques to identify the intended receiver process of an incoming packet at an earlier phase. We implement a prototype system of the proposed scheme on Linux 2.6, and our experiment results show that the prototype system supports the predictable real-time behavior of higher priority processes even when excessive traffic is sent to lower priority processes.

• Journal of Korean Elementary Science Education
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• v.25 no.3
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• pp.244-256
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• 2006

Elementary teachers should lower their levels of expectation and indeed perspectives to those of elementary students. Even in relation to basic symbols, such as an arrow, can be read differently by teachers or students. Semiotics deals with the creation of meaning in rotation to symbols and signs. This study introduces semiotic analysis to the study of science textbooks. Elementary science textbooks contain a great many inscriptions, such as photographs and cartoons, even more than texts, such as words and sentences. Inscriptions employ various social conventions such as arrows, auxiliary lines, etc. Some conventional signs, however, hold different or indeed multiple meanings than the textbook author intended the sign to have. The arrows used in science textbook, mainly in the inscriptions, were analyzed and classified according to their intended meaning. The results indicated that teachers should use such arrows more carefully in lessons with elementary students.

• Journal of The Korean Association For Science Education
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• v.32 no.8
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• pp.1345-1355
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• 2012

In this study, 15 evaluation questions about light were developed and presented to 30 middle school students, and then the theory of knowledge space was used to analyze the status of the middle school students' knowledge about light. Not only was the state of the students' knowledge about light intended to be measured by schematizing the knowledge hierarchy obtained; the data obtained were also intended to be used as basic materials to improve the teaching methods used. To achieve the purpose of this study, the evaluation results, the individual knowledge state, and the hierarchy of questions were analyzed. As a result, different knowledge structures were found in the individuals and groups, and it was determined that individuals and groups should be diagnosed differently. In addition, the implication that there is a connection between each question and the individual knowledge state was drawn.

• Asia pacific journal of information systems
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• v.9 no.3
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• pp.25-46
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• 1999

Today the role of information systems directly affects the goals and operations of companies and is being strategic. Most of Information System Departments (ISD), however, have been losing the credibility due to their failure to respond effectively to their counterparts in the rapidly changing environment. The purpose of this research is to propose a theoretical framework which systematically studies the innovation of ISD. It is intended to understand the critical factors which have an effect on each level of ISD innovation process. It is also intended to understand the performance of ISD innovation through the innovation process. Besides, we try to clarify the conceptual difference between IS innovation, Information Technology innovation, and ISD Innovation. As a result, we propose the structural model for ISD innovation research by analyzing the innovation theory and previous IS innovation studies.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2010.05a
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• pp.44-44
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• 2010

In this presentation, noise control materials will be discussed from several points-of-view. First, materials will be categorized in terms of their intended function: i.e., as dissipative materials, as barriers, and as media intended to modify some aspect of the sound field. Within each category, example implementations will be described as will modeling procedures. In the context of barrier materials, recent developments in the area of metamaterials will be described briefly, and problems with some recently suggested approaches will be highlighted. Acoustical cloaking will be described as a method of modifying a sound field in such a way that a sensitive area is shielded from noise exposure; the practical difficulties of this approach will also be described. Finally, within each category of material and approach, a series of suggested research challenges will be described.

• Proceedings of the Korea Contents Association Conference
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• 2005.11a
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• pp.659-663
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• 2005

It was expressed repeated information on reuse design pattern in the design information because it was impossible to build a standardized design pattern in the existing design pattern tools. Also, It must possible to extend standardized design pattern just as one intended of designer. And It is able to express objects just as one intended of designer. Therefore, the representative characteristic of this paper was able to define XMI metamodel to express design pattern, and was able to extend metamodel to express design pattern.