• Journal of Korean Society of Water and Wastewater
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• v.11 no.2
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• pp.40-49
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• 1997

From water management point of view, the industrialization that we have achieved in the last decades brought out two major changes: water shortage and water quality deterioration. They are getting the big obstacles we must overcome to continuously pursue industrialization for further development in the next century. Many plans using dams and advanced treatment methods have been developed for control of quantity and quality, respectively. In this paper, an alternative is conceptually reviewed which is much different from the plans in regard that the alternative looks at system itself. It is based on an interceptor system coupling with a concept of zero-discharge. This system allows no discharge of wastewaters from point-sources to waterbodies which are very sensitive in terms of water quality. In addition reuse of treated effluents is emphasized to a maximum extent. The application of the system to the Nak-Dong river basin indicated that an interceptor system will need from the middle reaches of the basin where industrialization gets heavier. Since wastewaters are not directly discharged to the river, water quality of the down stream will improve. Treated effluents will be able to be reused at a number of industrial complex which currently get water from the Nak-Dong river. This reuse will help alleviate water shortage. The biggest problem anticipated is cost for building and operating such system. A cost-sharing plan among the beneficiaries is considered. Further research is suggested focusing on detailed engineering and technical matters for potential implementation.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.11 no.4
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• pp.1972-1986
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• 2017

With the advent of the knowledge economy, science and technology resources have played an important role in economic competition, and their optimal allocation has been regarded as very important across the world. Thus, allocation optimization research for regional science and technology resources is significant for accelerating the reform of regional science and technology systems. Regional science and technology resource allocation optimization is modeled as a double-layer optimization model: the entire system is characterized by top-layer optimization, whereas the subsystems are characterized by bottom-layer optimization. To efficaciously solve this optimization problem, we propose a mixed search method based on the orthogonal genetic algorithm and sensitivity analysis. This novel method adopts the integrated modeling concept with a combination of the knowledge model and heuristic search model, on the basis of the heuristic search model, and simultaneously highlights the effect of the knowledge model. To compare the performance of different methods, five methods and two channels were used to address an application example. Both the optimized results and simulation time of the proposed method outperformed those of the other methods. The application of the proposed method to solve the problem of entire system optimization is feasible, correct, and effective.

• Journal of Korean Association for Spatial Structures
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• v.16 no.1
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• pp.95-104
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• 2016

Recently, the concept of damped outrigger system has been proposed for tall buildings. But, structural characteristics and design method of this system were not sufficiently investigated to date. In this study, the dynamic response control performance of outrigger damper has been analyzed. To this end, a simplified analysis model with outrigger damper system has been developed. Use the El Centro seismic(1940, NS) analysis was performed. Analysis results, on the top floor displacement response to the earthquake response, did not have a big effect. However, acceleration response control effect was found to be excellent. The increase of outrigger damper capacity usually results in the improved control performance. However, it is necessary to select that proper stiffness and damping values of the outrigger damper system because, the outrigger damper having large capacity is result in heavy financial burden.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.16 no.2
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• pp.273-278
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• 2012

In this contribution, we design and implement an SPI hardware interface for the microprocessor to communicate with the MMC (Multi-Media Card) in an embedded system. Proposed architecture is compatible with the APB in AMBA bus architecture. Embedding OS in an embedded system means a big burden in terms of hardware and software ending up with performance decline. In this paper, we adopt the concept of SPI communication without using OS in the embedded system and implement in a form of FPGA chip. The designed SPI module was automatically synthesized, placed, and routed. Implementation was performed through the Altera FPGA and well operated at 25MHz clock frequency, which satisfied our target speed.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.42 no.2
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• pp.505-513
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• 2017

In this study, we collected 200,578,703 geo-tweets and removed the twitter bots. Using the concept of activity radius, Twitter users are classified. Users are also divided first into domestic and overseas, and again domestic ones are divided into locals and non-locals. Statistical characteristics of activity strength and active area of Twitter users are described according to activity radius and home region, and the geographical distribution is presented visually. Through a case study of Las Vegas, we have identified the difference in activity strength and active area by the user's home residence. We expect to derive theories about human mobility by analyzing various cities with the method proposed in this study.

• Journal of the Korean Society of Costume
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• v.54 no.7
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• pp.121-134
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• 2004

Wiener Werkstaette(workshop) established in 1903 was an artistic handicraft working group, the central figure of which was an architecture, J. Hoffman. Especially its textile design part established in 1910 produced good results. The textile design part of Wiener Werkstaette took total artwork (Gesamtkunstwerke), which Pursued artistic work in all visual parts of life, as a central concept of their work and tried to insert the artistic creativity into the textile design. Regarding the influence relationship between Wiener Werkstaette textile design and formative art, it was influenced by the geometric tendency of C.R. Mackintosh and the style and motive of Japanese art. From 1910's, bright, vivid and cheerful designs were mass-produced by uniquely using various motives, techniques and colors. The formative significance of Wiener Werkstaette textile design are as follows. Firstly, the pattern includes both rational and sensual elements. Secondly, the aesthetic patterns of Wiener Werkstaette include formative elements anticipating the modernism. The leading artistic sense like this played role of catalyzer through which the golden age of artistic decoration, art deco, came. The significance of the textile was made aware through clothes design . The clothes design made with Wiener Werkstaette textile conveyed message as art to everyone and provided the elite of society supporting them with Proud that they are fashion leader ahead of times and have artistic sense. Wiener Werkstaette textile design like this played big role as an instrument for realizing the total artwork by attaining the new artistic formative fruits.

• Journal of the Korean Society of Costume
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• v.63 no.1
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• pp.1-15
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• 2013

This study deals with the aesthetic characteristics in Gareth Pugh's fashion film. As fashion films are becoming a newly emerging communication tool in fashion, the aim of this study will be to build a database on these films. For the specific method in this work, literature reviews were performed along with the empirical study of seven pieces of fashion film. The results of the study showed that Gareth Pugh released the fashion films from 2008 to 2012, and he collaborated with SHOW Studio member and photographer Nick Knight and Ruth Hogben. Common themes in their films were fear, fantasy, dynamics, and going off-limits, and these can be summed up in the following ways. First, a sense of fear was expressed via black colors, bizarre mechanical sounds, decalcomania shape in abstract images, and transformed physical body images. Second, an image of fantasy was presented with diverse expression techniques including colorful light presentations and abstract image setups from repeatedly changed image reproduction. Third, dynamic feature was denoted with a combination of fast development of images and quick reproduced layouts, as well as quick beat sounds, and big and powerful action movements. Fourth, characteristic of going off-limits was reflected, by showing the collections with a communication tool called fashion film instead of existing collection concept.

• Asia pacific journal of information systems
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• v.25 no.2
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• pp.265-288
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• 2015

IT convergence services, as the main stream of the digital age, are currently on their way to include the concept of Software as a Service (SaaS), where IT products and services are integrated as one. In particular, the recently introduced web-service-based SaaS is expected to be a more developed SaaS model. This new model provides greater influence on clients' job performances than its previous models, such as application service providers and the web-native phase. However, the effects of technology maturity on task performance have been overlooked in adoption and performance studies. Accordingly, this study introduces SaaS technology maturity as the exogenous technological characteristic influencing job performance. This study also examines the relationships among various SaaS-related performances according to the different levels of SaaS maturity. Results suggest that applying innovative technologies (such as SaaS), particularly when the technology reaches a certain level of maturity, is more helpful for managers in improving task-technology fit and job performance. This study makes an academic contribution by establishing and validating a performance model empirically with SaaS technology maturity perspectives.

• Journal of the Korean Society for Precision Engineering
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• v.28 no.4
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• pp.455-462
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• 2011

This paper is about the design of a new gravity compensator for the lower body exo-skeleton device. The exo-skeleton devices is for increasing the torque of the human body joint for the purpose of helping the disabled, workers in the industry, and military soldiers. So far, most of studied exo-skeleton devices are actuated by the motors, but motors are limited in energy such that a short durability is always a big problem. In this paper, a new gravity compensator is proposed to reduce the torque load applied to human body joints due to gravity. The gravity compensator is designed using a tortional bar spring, and its structure and characteristics are studied through the test and computer simulation. A design concept on the exo-skeleton device using the gravity compensator is presented. An analysis and computer simulation on the torque reduction of the proposed exo-skeleton device that applies and non-applies the gravity compensator are performed.

• Journal of Fashion Business
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• v.9 no.2
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• pp.100-112
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• 2005

Although Korean first ladies are not very big in changes in their hair style, American first ladies have greatly influenced clothing as well as hair style, exercising their influence over the apparel industry and fashion. Historically, American first ladies' fashion tastes have been on the center of attention and taken the lead in fashion. Although Korea first ladies' hair style are not very new or sensible enough to lead the fashion among the public, they have a sense of fashion and some influence on women of the upper classes. Beauty artists creating first lady hair style are representative of the times and have great value to the research. However, this study will not concentrate on their research. This study will analyze Korea first ladies' hair style, examine hair design and hair technique in fashion in those days. This study intends to provide important materials for Korean beauty history that has not been established by systematically arranging fashion style in the times analyzed through first ladies' hair style. Also, this study aims at researching in the aspect of beauty aesthetic concept through analyzing Korea first ladies' hair style.