• Journal of the Korean Home Economics Association
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• v.46 no.1
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• pp.25-37
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• 2008

The aim of this study was to provide basic materials that would enable students who take courses in the subjects of technology and home economics to take the knowledge and technological skills they learn in the classroom and apply them to real life situations and to nurture their thinking power and creativity. To achieve these research objectives, a survey was conducted on 217 home economics teachers at 129 schools in the metropolitan area in order to assess their classroom operations and the adequacy of the curriculum regarding "clothes-making and reuse." The results showed that most of the schools surveyed have only one classroom for home economics and that a majority of them are cooking rooms. The most preferred place to practice making clothes was found to be the classroom. In addition, the use of teaching aids pertaining to clothes-making are lacking or in poor shape. Furthermore, analysis of the curriculum regarding "clothes-making and reuse" showed that most of the students use kits that contain materials for making clothes, due to a lack of practice hours. Most teachers thought that this section was appropriate for the school curriculum. In the more detailed categories, the students' ability to use sewing machines was the lowest, while the ability to sew by hand was selected as the most useful and most appropriate for real life situations.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.3
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• pp.469-477
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• 2015

In this paper, joint spatial division and reuse (JSDR) scheme is proposed for maximizing network throughput in densely-deployed wireless local area networks equipped with massive antenna array. The proposed JSDR scheme divides the massive spatial space into two subspaces: one is for suppressing the interference from the neighboring access points and another is for sensing the carrier sensing and transmitting the information-bearing signals to intended stations. By using computer simulation, the proposed JSDR can provide 133% higher network throughput, compared to the carrier sensing technique defined in the IEEE 802.11 standard so that the proposed JSDR is suitable for the next generation WLAN systems.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.34 no.3A
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• pp.229-234
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• 2009

In this paper, we propose a decision scheme of amount of required resources in wireless multi-hop systems which can reuse radio resources adaptively among relay stations (RSs). Base stations (BSs) can allocate resources dynamically based on amount of required resources of each RS. Moreover using resource reuse with this allocation method can increase amount of available resources in multi-hop systems. Generally, BSs allocate same amount of resources for RSs which share and reuses same resources for each other. Since amount of required resources are different among these RSs, a decision scheme of a specific value which can represent various required resources of RSs is needed. We propose this scheme which can decide the representative value of required resources of RSs adaptively based on the amount of required resources and the buffer state of each RS. Our simulation results show that the proposed scheme can increase performance of a multi-hop system. System capacity with the proposed adaptive scheme is increased by twice as large as one with a fixed representation value.

• The Transactions of the Korea Information Processing Society
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• v.4 no.8
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• pp.1961-1974
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• 1997

WWW has accepted widely to the who wants the hypermedia-based internet services. And WWW introduces intranet environment which consists of the networks supporting TCP/IP and HTTP protocol for processing the task of company inside that. Intranet application should support not only acquiring the informations, but also producing, modifying and deleting the ones. But since previous hypermedia development methods lack modeling behavior of system and reuse, we need a new method for intranet application. In this thesis, we have proposed the OOIDM(Object Oriented Intranet application Development Method)supporting modeling behavior of system and reuse. And we have proposed the design patterns available for the intranet domain in order to reuse the design information. And we introduces a case study about OOIDM applying design patterns. Adaptation of design patterns to intranet domain gives us much benefits. Design patterns make it easier to reuse the successful design, architecture and reducing the design decisions.

• Membrane Journal
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• v.23 no.1
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• pp.24-44
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• 2013

The MBR technology has evolved rapidly over the past two decades with significant gains in performance and reliability, and reductions in costs. Membrane bioreactors (MBR) technology is widely recognised as offering a key option for enhanced wastewater treatment or reuse. The objective of this paper is then to critically review the remarkable achievement on the research and commercial applications of membrane bioreactor (MBR) technology and to present current and potential MBR markets on a global scope. This brief review of the technology incorporates five key aspects : 1) evolution of MBR practice, 2) the commercial technologies of MBRs, 3) the largest MBR installations globally (e.g. > $10,000m^3/day$), 4) MBR market growth, and 5) directions for future research. Finally, the development directions of economical, environmental and technical aspects in MBRs; 1) investment costs; 2) effluent water quality; 3) membrane materials and modules; 4) MBR equipment and treatment process; 5) operating costs (higher energy & chemical consumption); and 6) sustainability such as anaerobic MBRs in the coming years were addressed.

• Journal of KIISE:Software and Applications
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• v.33 no.3
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• pp.289-300
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• 2006

Product line is nowadays well known as a representative method for reuse. In the product line, important assets are components. Although enough concerns were given of the product line, it was not accomplished to structure and specify a product-line component with variability. This paper presents an approach to specify components in the product line. The approach describes the static and dynamic structure of a product-line component and explains the behavior and concurrency of the component. The component information is separately described in the black-box and white-box using the Feature-Oriented Reuse Method(FORM). This research also formalizes the data on a component specification in the form of BNF. The specification is described through careful consideration for many different characteristics of the product-line component, so this paper helps to easily develop the components in the product line and to well comprehend how to apply a method for the product line.

• Journal of the Korea Society of Computer and Information
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• v.13 no.5
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• pp.163-170
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• 2008

As the degree of dependency and application of component increases, the need to strengthen security of component is also increased as well. The component gives an advantage to improve development productivity through its reusable software. Even with this advantage, vulnerability of component security limits its reuse. When the security level of a component is raised in order to improve this problem, the most problematic issue will be that it may extend its limitation on reusability. Therefore, a component model concerning its reusability and security at the same time should be supplied. We suggest a Separation of Concerns Security Model for Extension of Component Reuse which is integrated with a wrapper model and an aspect model and combined with a reuse model in order to extend its security and reusability by supplying information hiding and easy modification, and an appropriate application system to verify the model's compatibility is even constructed. This application model gives the extension of component function and easy modification through the separation of conceits, and it raise its security as doll as extends its reusability.

• Korean Chemical Engineering Research
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• v.57 no.3
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• pp.372-377
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• 2019

Leaching ($60^{\circ}C$, 5 min) and wet torrefaction ($200^{\circ}C$, 5 min) of empty fruit bunch (EFB) were carried out to improve the fuel properties; each liquid fraction was reused for leaching and wet torrefaction, respectively. In the leaching process, potassium was effectively removed because the leaching solution contained 707.5 ppm potassium. Inorganic compounds were accumulated in the leaching solution by increasing the reuse cycle of leaching solution. The major component of the leached biomass did not differ significantly from the raw material (p-value < 0.05). Inorganic compounds in the biomass were more effectively removed by sequential leaching and wet torrefaction (61.1%) than by only the leaching process (50.1%) at the beginning of the liquid fraction reuse. In the sequential leaching and wet torrefaction, the main hydrolysate component was xylose (2.36~4.17 g/L). This implied that hemicellulose was degraded during wet torrefaction. As in the leaching process, potassium was effectively removed and the concentration was accumulated by increasing the reuse cycle of wet torrefaction hydrolysates. There was no significant change in the chemical composition of wet torrefied biomass, which implied that fuel properties of biomass were constantly maintained by the reuse (four times) of the liquid fraction generated from leaching and wet torrefaction.

• Journal of the Korea Convergence Society
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• v.12 no.3
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• pp.205-216
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• 2021

There is a growing interest and need for adaptive reuse and remodeling as a method for sustainable urban regeneration and residential improvement. The purpose of this study was to suggest implications for the remodeling of detached house for adaptive reuse in Korea. To this end, a theoretical review and case analysis was conducted on the remodeling in 'Gupo-Saetulmaul' and 'Haeridan-gil' in Busan City. The implications through the study are as follows. (1) Programs for residents participation and sustainable management of buildings are needed. (2) Coexist between residential and commercial use is needed. (3) A guideline for planning and designing street and building remodeling is needed at the level of the entire detached housing site.

• Smart Media Journal
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• v.9 no.4
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• pp.52-59
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• 2020

This second survey, which collected 2392 disclosing grades data for 2012~ 2017, nearly twice the first survey, was conducted to supplement the result of the first survey on the reuse of 4-digit passcodes(PCs) data. In addition of second survey, we found that the more number of used PCs, the higher reuse rate, up to 4 numbers of PCs were used for reusing and there may be personal differences even on the single site. The results of this paper that were not available in the first survey were close to the those of foreign research on the reuse of passwords using a mixture of numbers, letters and special characters. This second survey provided an inference that an opportunity to indirectly approach the domestic situation of re-using password, where data collection is impossible and that domestic regulation such as periodic change of password may increase the re-using password.