• Journal of the Korean Institute of Rural Architecture
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• v.13 no.3
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• pp.21-28
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• 2011

This paper was able to indicate to the results the following thing that attempted a required potential development demand, through the contents and cost analysis in Rural Community Development Project. Nowadays, Rural Areas comparatively have a lot of development demands related to improvements environmental of residence life and construction of Urban-Rural Exchange Facility, on the other and, there is comparatively a few facilities demands regarding agriculture production. Demand is cold storage facilities and agricultural products direct sale facilities expansion to be able to raise value added of agricultural products as facilities related comparatively a little agriculture production, and an improvement of residence life comparatively has a lot of repair environmental uninhabited house repair, river-front and the roadside, rest shelter creation demands. However, that should be forecasted so that aging of rural, population decrease and development demand is caused by a lot of issues such as maintenances operation of many Urban-Rural Exchange Facilities and a similar program and content has a lot of them in bilateral adjacent zones. Therefore, in the future plan shall attempt efficiency operating facilities and a program through characterization and network of zone so that facilities and program can have complementary relation in the adjacent zones. And item development and an investor are necessary regarding new labor force supply for continuous value maintenance of space and returning to the farm that there were the reverse agriculture production and Amenity which are an rural village. Furthermore, developmental plan of rural village is necessary through the demand analyses that a citizen wishing for things.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.10a
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• pp.450-453
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• 2001

It is requested interoperability and inter-connection among technologies due to inertia and network externalities in the telecommunications industry. for that reason, firms in the telecommunications industry compete intensively against preempting their markets. Consumers' utilties can be increased, but searching or transaction cost of consumers may be decreased by standardization which is the core issue in the telecommunications. Also, standardization may prevent firms in that industry from overplus investment. However standardization may decrease the diversity of goods and technologies, so it can be the constraint factor in the consumption. In this paper, we'll examin the economic effects of standardization in the telecommunication industry and the effects to the industrial structure of standardization. After that, we'll suggest national policies in relation to standardization.

• Geophysics and Geophysical Exploration
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• v.18 no.1
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• pp.21-30
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• 2015

Induced seismicity has been observed in the relation with lots of anthropogenic influence and at variety of geological conditions over the last several decades. This paper reviews those induced earthquakes and compares with each other as well as with natural tectonic earthquakes. Hydraulic fracturing is commonly used to enhance the permeability through new cracks in the rock formation. The process triggers the induced seismicity, which can give crucial information on the fracture network and oil/gas migration. In the similar way, unintentionally induced events during the production procedure of the field, dam reservoir, minig activity, or wastewater injection can be used to give insight into various hydrodynamic processes and changes of reservoir properties at a various scales. The general conclusion summarizes the uncertainty or limitations of knowledge up to date and presents some issues to be dealt with in the future research.

• Journal of Digital Convergence
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• v.11 no.10
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• pp.341-350
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• 2013

Recently, in order to promote their marketing promotion, the entrepeneurs attach importance to many SNS(Social Network Service)and execute it. The representative elements of the SNS service are interactivity, information offering. This study analyzes empirical effects on the SNS Marketing Features in Domesic Enterprise The conclusion of this study shows that the Interactivity has a higher positive effects on Affective Commitment than those on information offering and Information offering has stronger positive effects on calculative commitment than interactivity. Also, these effects enlarge the high use frequency more than the low use frequency. This study also shows that the information offering affect the On-line Word-of-Mouth more positively than the Interactivity. And this study shows that SNS affects the positive effects on the relationship commitment rather than the On-line Word-of-Mouth. Based on the results, the practical implications are offered.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.16 no.6
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• pp.29-41
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• 2017

In this study, we used individual trip data to estimate a macroscopic fundamental diagram (MFD) that relates flow (or production) to density (or state) in Daegu metropolitan city. The individual trip data were generated by processing data that were collected from DSRC-based (dedicated short range communication) traffic data collection system. Using the processed individual trip data, we first examined whether the assumptions for MFD are valid, and then the relation between outflow and accumulation was estimated in our study site. As a result, we found that i) the assumptions are valid to construct MFD; and ii) the reproducible and well-defined MFDs exist in the network level.

• Korean Journal of Social Welfare
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• v.59 no.1
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• pp.329-351
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• 2007

This study analyzes the changes in individual local government's social spending from 1995 to 2004 in South Korea. Using the pooled time-series and cross-sectional data of 226 basic-level local governments, the resulting analyses of an error correction model are very interesting: First, a rising local population led to an immediate increase in social spending; Secondly, local governments gradually increased social spending when the elderly ratio had been high, but the levels of social spending in the previous year and local economy related spending level had been low. Thirdly, there were no spending changes associated with local elections and partisan politics. Fourthly, both cooperative and competitive intergovernmental relations had the most significant effect on the social spending and reduced geographical disparities in the level of spending across localities. In conclusion, this study suggests that we establish a more comprehensive intergovernmental network which lead to territorial justice in social welfare.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.18 no.1 s.116
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• pp.15-23
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• 2007

A simple six-port direct conversion QPSK receiver which is made up of a six-port phase correlator, a signal power detector, and I/Q channel signal de-modulator is designed and implemented in this paper. The output phase signals of six-port phase correlator are also analysed. On the basis of $90^{\circ}C$ phase relation among the six-port phase correlator output signals, the QPSK de-modulation circuit is designed by a simple circuit. The six-port phase correlator is made up of $90^{\circ}$ hybrid branch line and power detector. The six-port phase correlator, which is designed in frequency range of 11.7 to 12.0 GHz, gets the phase error characteristics less than $5^{\circ}$. By considering matching network and amplitude balance in the designed fiequency range, the designed six-port direct conversion QPSK receiver demodulates the I and Q signals with performance less than $5^{\circ}$ phase error.

• Journal of Intelligence and Information Systems
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• v.8 no.2
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• pp.1-13
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• 2002

In this paper, we propose an object tracking system which can be convinced of moving area shaped on objects through color sequential images, decided moving directions of foot messengers or vehicles of image sequences. In static camera, we suggests a new evaluating method extracting co-occurrence matrix with feature vectors of RGB after analyzing and blocking difference images, which is accessed to field of camera view for motion. They are energy, entropy, contrast, maximum probability, inverse difference moment, and correlation of RGB color vectors. we describe how to analyze and compute corresponding relations of objects between adjacent frames. In the clustering, we apply an algorithm of FCM(fuzzy c means) to analyze matching and clustering problems of adjacent frames of the featured vectors, energy and entropy, gotten from previous phase. In the matching phase, we also propose a method to know correspondence relation that can track motion each objects by clustering with similar area, compute object centers and cluster around them in case of same objects based on membership function of motion area of adjacent frames.

• Journal of the Korean Institute of Landscape Architecture
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• v.32 no.2
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• pp.36-54
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• 2004

The disposition of public parks pursue proper distribution and hierarchy formations on the basis of the neighborhood units theory. However, problems like price of land has brought about a large gap between theories and real conditions. This paper examines the problems of the practical disposition and disposition standards of public parks to solve these contradictions with reference to examples in Japan metro-cities. Study results are as follows; 1) The existing disposition theories are based on the district-boundary of men’s acting and settling down. Therefore, the disposition standards of large-scale parks or special parks beyond the humane scale have not been explained exactly. 2) As city sizes have expanded, these large-scale parks have developed greatly, however, they are located out of urban areas on the ground of nature’s geographical features. As a result, many small parks developed in urban areas. This extreme phenomenon of location would break up proper distribution and hierarchy. 3) Large parks over 4 ha not only take an important role in forming greenbelts but their location is also mainly based on their natural geographical features so that they are absorbed into the network -structure of greenbelts. 4) It is suggested that in planning parks, location and size of large parks over 4 ha should be selected and decided in the relation not with parks but with greenbelts. Parks of 4 ha or below are properly disposed. Also, these parks take a great role in forming the district boundary for settling down. Accordingly, proper distribution and hierarchy formation needs to be based on established neighborhood as they were previously.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.05a
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• pp.408-411
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• 2009

In this paper, conventional PI, fuzzy neural network(FNN) and adaptive teaming mechanism(ALM)-FNN for rotor field oriented controlled(RFOC) induction motor are studied comparatively. The widely used control theory based design of PI family controllers fails to perform satisfactorily under parameter variation nonlinear or load disturbance. In high performance applications, it is useful to automatically extract the complex relation that represent the drive behaviour. The use of learning through example algorithms can be a powerful tool for automatic modelling variable speed drives. They can automatically extract a functional relationship representative of the drive behavior. These methods present some advantages over the classical ones since they do not rely on the precise knowledge of mathematical models and parameters. Comparative study of PI, FNN and ALM-FNN are carried out from various aspects which is dynamic performance, steady-state accuracy, parameter robustness and complementation etc. To have a clear view of the three techniques, a RFOC system based on a three level neutral point clamped inverter-fed induction motor drive is established in this paper. Each of the three control technique: PI, FNN and ALM-FNN, are used in the outer loops for rotor speed. The merit and drawbacks of each method are summarized in the conclusion part, which may a guideline for industry application.