• 인터넷정보학회논문지
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• 제20권1호
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• pp.17-24
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• 2019

2016년 세계경제포럼(WEF)에서 4차산업혁명이 소개된 이래 사물인터넷, 인공지능, 빅데이터, 5G, 클라우드 컴퓨팅, 3D/4D 프린팅, 로보틱스, 나노기술, 바이오 공학 등 다양한 분야에서 이런 기술을 활용한 제품과 비즈니스가 빠르게 확대되어 왔다. 사물인터넷 중에서는 웨어러블 디바이스가 최종고객을 대상으로 활용되는 선도적 적용분야로 인식되고 있다. 본 연구의주요 목적은 활동량 측정기에 대해서 고객의 욕구를 파악하고, 이를 마케팅 믹스와 연계시킨 제1차 연구에 기반하여 제2차 연구를 수행하고 이 결과를 제1차 연구결과와 비교하는 종단연구이다. 더불어서 미래 활동령 측정기 개발을 위한 잠재욕구를 파악하는 것이다. 이를 위해서 2018년 5월 대학생들을 대상으로 서베이가 수행되었으며 이용특성에 관한 주요변수에 대해서 ANOVA 등 실증연구가 이루어졌다. 또한 제1차 연구와는 달리 잠재욕구에 대한 분석결과를 단어구름기법을 사용하여 시각화하였다. 제품 가격 유통 촉진 등의 마케팅 믹스에 기반을 둔 종단연구결과에 따르면 현재 활동량 측정기는 도입기에서 성장기로 이전하고 있으며, 마케팅 믹스 각각에 대한 변화를 발견할 수 있었다. 연구결과는 학계뿐 아니라 사물인터넷 기반의 디바이스를 개발하려는 개발자에게 고객의 욕구에 기반 개발과 관련하여 시사점을 제공한다.

• 상하수도학회지
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• 제14권4호
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• pp.343-349
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• 2000

Techniques such as dissolved air flotation and electroflotation, which utilize micro bubbles, are increasingly used for water and wastewater treatment. Most studies have concentrated on particle characteristics. Pretreatments that manipulate particle size and zeta potential were considered important. A recent study, which modeled the collision mechanism between micro bubbles and particles in dissolved air flotation, suggested bubble characteristics should also be important. Hydrogen micro bubbles were generated electrolytically and their zeta potentials measured under various conditions using a novel electrophoresis method. Effects of several parameters were investigated. Bubble zeta potentials were found to be pH dependent, and to have a negative value around neutral pH, becoming zero or positive at lower pH. The pH at zero zeta potential was 5.0 under study conditions. Using artificial solution and tap water, at fixed pH, bubble zeta potentials varied with solution composition. Zeta potentia]s of bubbles were affected by the types of cations and anions in solution but not by the voltage applied. These findings will help improve efficiencies of particle removal processes that utilize micro bubbles. As bubble zeta potential varies with solution composition, it needs to be measured for each composition to understand those effects, which increase removal efficiency.

• 사회복지연구
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• 제49권1호
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• pp.133-161
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• 2018

여성결혼이민자와 그 가족을 위해 많은 예산과 자원이 사용되었음에도 불구하고, 서비스가 실제 도움을 필요로 하는 개인에게 전달되어지는지에 대한 보다 기초적 확인은 이루어지지 않았다. 본 연구는 한국어교육 및 한국생활지원에 대한 욕구를 지닌 여성결혼이민자가 다문화가족지원센터를 이용하는데 있어서 영향을 미치는 조절 요인을 규명하고, 향후 다문화 가족지원센터의 정체성과 역할에 대한 실천적 정책적 함의를 제시하는데 의의가 있다. 이를 위해 2015년에 실시한 전국 다문화가족실태조사 자료를 분석하였고, 그 결과는 다음과 같다. 한국어 구사능력이 좋은 사람은 한국생활에 어려움이 있을 경우 다문화가족지원센터를 이용할 가능성이 높으며, 한국어 구사능력이 상대적으로 떨어지는 이민자는 욕구의 유무와 관계없이 센터를 이용할 가능성이 높았다. 둘째, 배우자와의 관계에 만족할수록 센터이용 가능성이 높은 것으로 나타났으나 조절효과는 검증되지 않았고, 반면 한국인 배우자의 가부장적 태도의 조절효과는 유의미하게 나타났다. 이러한 결과에 따라 여성결혼이민자의 사회서비스 이용을 촉진하기 위한 구체적이고 실질적인 제언을 제시하였다.

• 가정과삶의질연구
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• 제23권3호
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• pp.217-230
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• 2005

The purpose of this study was to examine factors related to the purchase of cash-value life insurance of households. Based on human capital and bequest motive theories of the demand for life insurance, this study developed a conceptual model of the demand for life insurance of households. In addition, in order to capture the beneficiaries' preference and expected lifetime utility, expected future financial needs were included in the conceptual model. Using Heckit analysis, the model was estimated by two stages. The results supported that human capital, bequest motives and expected future financial needs were significant factors on both decision to have insurance and the mont of insurance. Specifically, if the household's head expected to have a higher potential in the future, the household was more likely to have insurance. If a household had dependents, the household was more likely to have insurance. As income or monthly expenditure increased, the probability of haying insurance and the amount of the insurance increased However, savings or social insurance were positively related to the purchase of insurance.

• 수산경영론집
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• 제40권2호
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• pp.127-148
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• 2009

The objective of this paper is to evaluate of fisheries competitiveness in Korea, China and Japan. A joint research with researchers from Korea, China and Japan from 2007 to 2008 was conducted to analyze competitiveness of each respective fishery industry. An industry's competitiveness means the aggregated and potential abilities of the infrastructure, producers and other operators in the industry. The study improved the Norway-Iceland Model developed by the FCI Team(2005) and applied it to the fisheries of the 3 countries. To compare competitiveness of each fishery from the 3 countries, the study examined 87 items including 64 questions and 23 statistics items. Korea fisheries' competitive advantage over China is in marketing capability. Capabilities of fishing companies and fishing processors are also slightly over Japan's performance. However, Korea holds an absolute disadvantage over China and Japan when it comes to the macroeconomic environments and government support, industrial environments and infrastructure, and production and management. Korea's fishing companies and fishing processors especially are much weaker than those of China. In conclusion, Korea needs strategies to advance the industry's structure, China needs to expand the industry's base and Japan needs to differentiate the industry.

• KIEAE Journal
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• 제11권5호
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• pp.31-42
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• 2011

This study aimed at exploring the cultural ways to develope the under-space of overpass in the downtown area which has been considered as a dead, unhealthy place. The study process consists of 4 methodological stages. literature review, case study on environmental design of under-space of overpass, questionnaire and statistical analysis and specific study on regional context were conducted to understand the problems of the space and the needs of the community and visitors. The final suggestion based on the research are the natural rest settings including pocket parks with trees and fountain as well as cultural settings with small sized outdoor gallery and open performance stage which can be managed by the community members. The findings of this study would help the dead space in the center of the city regenerate the community in terms of physical, cultural and social environments. Also, this study will show the importance and the methodological approach of the research for the development of the hidden potential space of the city.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2016년도 춘계 학술논문 발표대회
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• pp.85-86
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• 2016

Recently, needs for the window cleaning for 2~5 stories in a building has been increased but existing window cleaning work by workers is not easy to clean the windows. Therefore a demand for development of alternative techniques have been raised. The purpose of this study is to analyze feasibility of development of the guide rail-type cleaning device for cleaning window for the lower stories. For this, we analyze the status of the job, such as risk, limitations of by workers and examine the potential producer needs through interviewing field experts of the cleaning work. Futhermore, we define the required features of the window cleaning device and proposed the validity of the relised device development of the function.

• 경영과학
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• 제34권1호
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• pp.57-70
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• 2017

The phenomenon of increasing aging population is one of the crucial social and economic issues in these day. In this paper, drawn from the industrial application cases and relevant literatures, we present the typology of ICT convergent applications targeted for silver generation, referred as silver ICT. Subsequently, the contributional value of ICT as the enabling technology is estimated. We firstly conduct keyword search to collect currently used silver ICT applications. Secondly, drawn from the social welfare literature, we organize distinctive needs of the silver generations. Then, on the basis of task technology fit framework, typology of ICT enabled silver applications is organized through the fit of ICT in the sense of fulfilling those silver needs. Finally, using the industry input-output table figures, potential ICT contributions for silver ICT are estimated. The proposed silver ICT typology and ICT contributions provides useful insights for further research in the area of ICT convergence and silver market research.

• 한국건축시공학회지
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• 제8권2호
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• pp.53-61
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• 2008

It is expected that the market of residential facility for retired seniors will be a new investment field for construction firms. This study describes the questionnaire survey analysis results of potential customers' demand for the facility. For comparison purpose, direct construction cost was estimated by estimation experts. In addition, a case analysis was conducted to compare direct cost and indirect project cost with the experts' estimation. According to the questionnaire survey analysis, it is observed that there were significant differences in demand between groups which are classified by the regions, living expenditures, the level of property ownership and the scales of residence. From an investor's perspective, investment decision on residential facility for retired seniors should be made considering bothe the level of returns which can be generated from the investment and the customers' needs.

• Journal of Construction Engineering and Project Management
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• 제7권2호
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• pp.1-10
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• 2017

The Clonal Selection Algorithm (CSA) is an algorithm inspired by the human immune system mechanism. In CSA, several parameters needs to be optimized by large amount of sensitivity analysis for the optimal results. They limit the accuracy of the results due to the uncertainty and subjectivity. Adaptive Clonal Selection (ACS), a modified version of CSA, is developed as an algorithm without controls by pre-defined parameters in terms of selection process and mutation strength. In this paper, we discuss the ACS in detail and present its implementation in construction site utilization planning (CSUP). When applied to a developed model published in research literature, it proves that the ACS are capable of searching the optimal layout of temporary facilities on construction site based on the result of objective function, especially when the parameterization process is considered. Although the ACS still needs some improvements, obtaining a promising result when working on a same case study computed by Genetic Algorithm and Electimze algorithm prove its potential in solving more complex construction optimization problems in the future.