• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.47-48
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• 2015

As the power system develops rapidly into a smarter and more flexible state, so must the communication technologies that support it. Machine to machine (M2M) communication in Smart Grid environment has been discussed in European Telecommunications Standards Institute (ETSI). The power system is not easily replaceable, due to system replacement cost. The M2M gateway is required in other to improve interoperability in M2M environment. The Distributed Network Protocol 3.0 (DNP3.0) is the most important standard in the SCADA systems for the power. It has been used for device data collection/control in Substation Systems, Distribution Automation System. If the DNP3.0 data model is combined with a set of contemporary web protocols, it can result in a major shift. We selected Constrained Application Protocol (CoAP) based on RESTful as M2M protocol. It is a specialized web transfer protocol for use with constrained nodes and constrained networks. We have used the OPNET Modeler 17.1 in order to verity the SOAP versus CoAP. In this paper, we propose the CoAP-based M2M Gateway to Distribution Automation system using DNP3.0 in Smart Grid Environment.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.23 no.4
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• pp.109-116
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• 2015

The more advanced IT and mobile technologies get, the smarter customers become in the use of airline services. Using an airline, passengers are expecting more value than what airline're willing to provide them. Therefore this paper tries to find out the effect of airline staff's perception of airline's service management strategies to realize passengers' value based on previous oversea's research results. First of all, this paper provides t-test analysis results between passengers and airline staff regarding the perception of airline's service management strategy and customer orientation. Moreover, it was analyzed how the staff's understanding of the upper management's decision on service strategies would results in meeting customer's expecting values through such mediating variables as job satisfaction and customer orientation. It was proven the perception of service management strategies by staff played a very important role to realize customer's value.

• Journal of the Korean Regional Science Association
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• v.33 no.1
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• pp.59-68
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• 2017

Recently smart City has become a world-widely hot issue. Many cities have been trying to be smarter in solving urban problems. Different Countries and cities have adopted their own approaches. Accordingly, the concept of smart city is defined in diverse ways. This research emphasizes value creation of smart cities. For that purpose, thoughtful sensitivity, accuracy, and speed are critical components in planning smart cities. Among these, thoughtful sensitivity is the most important. Based on these components, policy should be conceived to develop road maps to replicate successful cases to other cities and regions for long-term innovation of regions. Such experiences will be a firm basis for competitiveness and prosperity of our cities.

• Journal of the Korean Home Economics Association
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• v.39 no.1
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• pp.39-51
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• 2001

This study was to examine the effects of economic, social, psychological, and marital resources on the relationship between retirement related stress and life satisfaction among the retired husbands and their wives. Economic resources included actual income, the amount of reduced income after retirement, and perceived adequacy of income, while social resources consisted of the supports from children, relatives, friends and neighbors. Psychological resources constituted sense of mastery and marital resource was measured by the emotional supports from the spouse. Data from 178 couples in Seoul revealed that retirees and their spouse perceived retirement as a very stressful extent, with husbands viewing their retirement as more stressful than their wives. The retirement related stress was found to be the most significant predictor on the life satisfaction of the couples. For retired husbands, life satisfaction was closely associated to sense of mastery and supports from children and relatives. The health status, perceived adequacy of income, sense of mastery, and supports from children and relatives were related to life satisfaction for wives. Therefore, the effects of personal resources on life satisfaction were smarter than that of retirement related stress for both retired husbands and their wives. Along with discussions, implications for retirement education and suggestions for future study are provided.

• Journal of the Korean Society of Costume
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• v.60 no.10
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• pp.28-46
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• 2010

Variety and individuality are characteristic of consumer in modern society. For the necessity of new designed men's formal suit is on the rise with advance of party culture and change of wedding style. In addition to growing numbers of Korean grooms are getting more interested in make themselves well-groomed on the wedding ceremony. The purpose of this study is to develop the men's formal suit pattern for right fit and better style for Korean grooms. In order to find out how to modify their fit, comparison among the existing patterns was necessary. In this study we proposed new patterns of men's formal suit, a morning coat, a tail coat, tuxedoes, director's suit, three-peaces suit, navy blazer. Considering the results of this study, developed patterns were altered to fit better and to smarter. They were well graded in waistline position, shoulder shape, back princess line shape. Also they were best to move around sleeve and bodice. And the developed patterns were altered to make armhole narrower to make bodice length shorter, to make bodice slimmer. The researcher's pattern's were made up into garments using wool 100%, silk 100%. According to verify the improvements and grade better in both appearance and comport, it will be to take the lead men's formal dress culture and expand the base of popular consume for men's formal wear.

• ETRI Journal
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• v.38 no.1
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• pp.41-51
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• 2016

Smart metering systems have become widespread around the world. RF mesh communication systems have contributed to the creation of smarter and more reliable power systems. This paper presents an algorithm for positioning GPRS concentrators to attain delay constraints for a ZigBee-based mesh network. The proposed algorithm determines the number and placement of concentrators using integer linear programming and a queueing model for the given mesh network. The solutions given by the proposed algorithm are validated by verifying the communication network performance through simulations.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.37 no.2
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• pp.97-119
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• 2011

World consumers are now focusing on their health, well-being and appearance more than ever before. This trend is creating heightened demand for products formulated as cosmeceuticals with active ingredients. A significant number of innovative formulations are now being used in cosmetics with real consumer-perceivable benefits and optimized sensory attributes, resulting in an economic uplift of cosmetic industry. To obtain skin care formulations with real consumer-perceivable benefits through dermal delivery of active ingredients, formulators are resorting to technology that until recently was used in pharmaceutical products. These various delivery systems are now being used in cosmecuetical formulations. Novel delivery systems reviewed here possess enormous potential as next-generation smarter carrier systems.

• Journal of Electrical Engineering and Technology
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• v.13 no.1
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• pp.181-191
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• 2018

Rapid development of information technology makes our environment become smarter and massive high performance computers are providing powerful computing for that. Graphics Processing Unit (GPU) as a typical high performance component is being widely used for both graphics and general-purpose applications. Although it can greatly improve computing power, it also delivers significant power consumption and need sufficient power supplies. To make high performance computing more sustainable, the important step is to measure it. Current power technologies for GPU have some drawbacks, such as they are not applicable for power estimation at the early stage. In this article, we present a novel power technology to correlate power consumption and the characteristics at the programmer perspective, and then to estimate power consumption of source program without prerunning. We conduct experiments on Nvidia's GT740 platform; the results show that our power model is more accurately than regression model and has an average error of 2.34% and the maximum error of 9.65%.

• Proceedings of the Korea Water Resources Association Conference
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• 2012.05a
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• pp.445-445
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• 2012

농업 수자원 시스템은 유역의 유출량으로부터 용수를 생산하고 농작물 재배를 위하여 용수를 공급하는 일련의 체계로서, 여름철 집중되는 강우를 저류하여 가용 용수를 확보하고 적절한 시기에 필요한 용수량의 공급을 목적으로 한다. 농업용 저수지, 용 배수로 및 평야부 수리시설물과 같은 구성 요소들은 오랜 기간에 걸쳐서 축조되어 지속 가능하고 안정적인 농업용수 공급을 수행하고 있다. 농업 수자원 시스템을 운영하는 과정에서 물 수요량에 대한 실시간 관리가 불가능하여, 수요와 공급의 불균형으로 인한 용수 공급 효율 저하 및 수리시설물의 노후화 및 누수 등으로 인한 관리 손실량 발생과 같은 문제점이 제기되었다. 스마트 물관리는 농업 수자원 환경의 급격한 변화에 대응하기 위하여 첨단 정보통신 기술을 도입하는 차세대 물관리 시스템으로 실시간 모니터링, 수자원의 분석/모의/운영 및 정보 관리 등 전 분야에서 정보화와 지능화를 구현하기 위한 기술 총화로 정의된다. 본 연구에서는 스마트 물관리를 구현하기 위한 구체적 방안으로써, 통합적인 농업용수의 실시간 운영 및 정보 관리를 위하여 첨단 정보통신기술을 이용한 모니터링 기술, 수집된 정보 분석 및 제공을 위한 웹 기반의 정보관리 기술, 정보교환을 위한 네트워크 기술 등을 통합 운영할 수 있는 체계를 구성하였다.

• Journal of the Korean Society of Industry Convergence
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• v.22 no.2
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• pp.183-189
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• 2019

Researches utilizing the fourth industrial revolution technology are being conducted as a breakthrough for improving the earthworker productivity. In order to make the earthwork site smarter, it is necessary to digitize the construction site topography at first. For this purpose, photogrammetry using drones and LiDAR on MMS have been recently used. The purpose of this study is to analyze the accuracy of LiDAR by installation angles for verifying the application of MMS in the construction site. As a result of comparing the coordinates measured by the total station and the LiDAR, a small error of about 1-2 centimeters was shown. It is confirmed that MMS could be well applied to the earthwork site. In addition, there was no significant difference in the accuracy of the acquired coordinates according to the installation angle of the LiDAR, but the shape of the point clouds was different. The larger the installation angle, the better the shape of the site terrain is measured.