• Journal of the HCI Society of Korea
• /
• v.12 no.4
• /
• pp.65-73
• /
• 2017

While electricity demand is generally increasing, stably controlling supply is becoming a serious challenge because renewable energies are becoming popular and often their productions are dependent on the weather. The 'demand response' programs can be used to complement the problems of renewable energies, and therefore their role is becoming increasingly important. This study provides an analysis of a demand response pilot that was conducted in Korea. The study first focused on questionnaire surveys and in-depth interviews, and the data was used to perform a Technology Acceptance Model (TAM) analysis. The goal of the pilot was to have the residential users reduce their power consumptions when an energy reduction mission is issued during peak load hours. The experimental subjects consisted of two groups with different characteristics. Subjects in group A obtained smart meters as an optional function of IoT platform service provided by a mobile service company, and received a charge deduction as their compensation. Subjects in group B either voluntarily purchased smart meters as individuals or received them by participating in an energy self-sufficient village program that was run by a local government, and were entitled to a donation as their compensation. With the analysis, group A was found to fit the extended technology acceptance model that includes perceived playfulness in addition to perceived ease of use and perceived usefulness. On the contrary, group B failed to fit the model well, but perceived usefulness was found to be relatively more important compared to group A. The results indicate that the residential energy groups' behavior changes are dependent on each group's characteristics, and group-specific DR design should be considered to improve the effectiveness of DR.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.35 no.4
• /
• pp.941-951
• /
• 2015

In the recent years, Korean construction companies have been awarded 680 billion USD in the oversea projects which lead to a successful quantitative growth. However, due to the lack of capability in the core technology and project management compared to the leading companies, in addition to low-price bidding, massive deficit projects have caused problems to the companies. In order to overcome the limitations of the lack of capabilities, the term constructability has been researched recently by developed countries to apply in the practical use. The concept of constructability must be applied for Korean companies to compete in the EPC construction projects. The term constructability is defined as the factor that affect the overall construction process of a project which is defined by the ease of construction and to secure the project quality. Therefore, this study aims to develop a constructability assessment model using the structural equation to assess the factors that affect the constructability in the design and construction stage. The purpose of using the structural equation is to analyze the direct and indirect correlation between each factor that affects the international construction projects. Total of 8 latent variables and 34 measured variables are derived through literature review, corporate reports, experts' interview and surveys. The result of the model suggests the constructability factors that are to be managed the most efficiently to reduce cost, time and improve the quality as well as a countermeasure strategy to successfully execute the target international construction projects.

• Proceedings of the Korea Society for Industrial Systems Conference
• /
• 1999.12a
• /
• pp.209-218
• /
• 1999

처방전달시스템은 처방의 수행은 의사가, 그에 따른 의약품조제는 약사가 수행함으로써 의약품의 오․남용을 방지하기 위한 의약분업의 실시에 따른 국민불편의 최소화와 약화사고에 따른 인증문제 등을 지원하기 위한 정보시스템이다. 처방전달시스템은 환자 개인정보의 허용된 범위 내에서의 공유와 공유를 위한 각종 개인정보 보호장치, 처방의 안전한 전달을 위한 내용의 비밀보장과 위변조방지 및 송신자와 수신자의 인증을 위한 장치가 필수적으로 필요하다. 또한 자료의 생명주기 측면에서 본다면, 처방전의 생성은 병․의원에서 이루어지며 소멸은 약국 및 환자에의해 이루어진다. 자료의 유통과정에 살펴보면 처방전달시스템의 주요성공요인은 정보의 생산자인 병․의원(의사)의 적극적인 정보제공의지와 이를 지원하는 편리한 정보시스템의 구축이라고 할 수 있다. 정보의 생산자인 병․의원 정보시스템 환경은 다양하고 복잡하기 때문에 기존의 애플리케이션을 이용하면서 처방의 전송을 위해서는 기존 애플리케이션 및 플랫폼에 독립적이며 자료의 적합한 취합과 통합이 가능하도록 지원하는 시스템이 필요하다. 처방전달 메시징시스템은 이러한 복합적인 정보시스템 환경을 지원하며 동시에 처방정보의 안전한 전달을 위해 플랫폼으로 실행될 수 있는 시스템을 말한다. 또한 처방의 비교적 짧은 생명주기와 지역적 생산, 유통구조를 적합하게 지원하기 위해 지역별 독립시스템의 구축과 공통정보 활용을 위한 중앙시스템과의 역할분담 모델에 근거한 분산시스템의 구축이 요구된다. 본 연구에서의 처방전달 메시징시스템은 일반적인 메시지서비스의 특성을 기본으로 자료전달을 위해 자료 암호화와 복호화, 송신자와 수신자에 대한 인증 및 자료접근 제한기능을 제공하며 각 클라이언트와 서버간의 실시간 연결 혹은 지연연결을 지원하는 독립적인 애플리케이션이다. 이러한 처방전달 메시징시스템을 구성하는 각 요소에 대해 정의하고 개념적 모델을 설계하고자 한다.에게 청구되며, 소비자에게 전송 되는 청구서는 사용자DB를 참조하여 사용자가 미리 정의한 원하는 형태로 변환되어 전달되며, 필요시 암호화 과정을 거치는 것이 가능해야 한다. 전송된 청구서는 전자우편의 경우, 암호해독이 가능한 전용 브라우저를 통해 열람 되며, 이는 다시 전용 브라우저를 통해 지불인증이 승인되어 청구 제시서버에게 전송된다. EBPP 시스템의 제어 흐름은 크게 기업이 청구 정보를 소비자에게 제시하는 흐름과 소비자의 지불 승인으로 인해 기업이 은행에 지불을 요구하는 흐름으로 구분할 수 있다. 본 논문에서는 통합 청구서버 및 정구 제시서버의 역할 및 구성 요소들에 대해 서술하고, EBPP 시스템과 연동하여야 하는 메일 서버와의 상호 작용에 대해 서술할 것이다. 본 시스템을 아직 구현이 되지 않은 관계로 시스템의 성능 등의 수치적 결과를 제시할 수 없는 상태다., 취약계층을 위한 일차의료, 의약관리), ${\circled}2$ 보건소 조직 개편 및 민간의료기관과 협력체계 확립, ${\circled}3$ 전문인력 확보 및 인력구성 조정, 그리고 ${\circled}4$ 방문보건사업의 강화 등이다., 대사(代謝)와 관계(關係)있음을 시사(示唆)해 주고 있다.ble nutrient (TDN) was highest in booting stage (59.7%); however no significant difference was found among other stages. The concentrations of Ca and P were not different among mature stages. According to these results, the yellow ripe period is appropriate to harvest the whole crop rice for forage considering dry matter yields,

• Journal of Intelligence and Information Systems
• /
• v.7 no.1
• /
• pp.81-95
• /
• 2001

Plant construction projects usually take much higher uncertainty and risks than the projects from other domains. This implies the importance of plant construction project management should be more emphasized than the other domain. Especially, the overall successes of the projects often depend on the performance of process planning and scheduling performed at the initial stage of the project. However, most plant construction projects suffer great difficulties in establishing proper process planning and scheduling timely because of unstructureness and dynamicity of environment of the project itself In this paper, we propose a knowledge-based process planning and scheduling approach in a plant construction domain to cope this problem. First, we modulize process planning knowledge and present the knowledge representation scheme. Second, we propose an inferencing mechanism to build a process planning for plant construction based on the represented process planning knowledge. Since our approach automate the initial process planning, which was usually done by manual way, it can improve the correctness and also completeness of the process plan and schedule by reducing the time to plan and allowing simulations on the various situation. We also design and implement this our approach as a real working system, and it is successfully applied to real plant construction cases from a leading construction company in Korea. Based on this success, we expect our approach can be easily applied to the projects of other areas, while contributing to enhancement in productivity and quality of project management.

• Journal of Korea Multimedia Society
• /
• v.8 no.10
• /
• pp.1369-1382
• /
• 2005

Vehicle segmentation, which extracts vehicle areas from road scenes, is one of the fundamental opera tions in lots of application areas including Intelligent Transportation Systems, and so on. We present a vehicle segmentation approach for still images captured from outdoor CCD cameras mounted on the supporting poles. We first divided the input image into a set of two-dimensional grids and then calculate the feature values of the edges for each grid. Through analyzing the feature values statistically, we can find the optimal rectangular grid area of the vehicle. Our preprocessing process calculates the statistics values for the feature values from background images captured under various circumstances. For a car image, we compare its feature values to the statistics values of the background images to finally decide whether the grid belongs to the vehicle area or not. We use dynamic programming technique to find the optimal rectangular gird area from these candidate grids. Based on the statistics analysis and global search techniques, our method is more systematic compared to the previous methods which usually rely on a kind of heuristics. Additionally, the statistics analysis achieves high reliability against noises and errors due to brightness changes, camera tremors, etc. Our prototype implementation performs the vehicle segmentation in average 0.150 second for each of $1280\times960$ car images. It shows $97.03\%$ of strictly successful cases from 270 images with various kinds of noises.

• Journal of the korean academy of Pediatric Dentistry
• /
• v.35 no.3
• /
• pp.516-522
• /
• 2008

In the case of the impacted teeth, the clinician has to consider development of tooth, site of impaction, eruption path, and cooperation of patient. If there are genetic or general factors to effect the eruption of tooth, the clinician treats these first and then takes the early treatment for eruption guidance. If there are physical factors to intercept eruption, the clinician put them off first. However, if there are no factors to effect eruption of tooth and enough space for eruption, the clinician can consider extraction of deciduous teeth, forced eruption and surgical reposition. In case of surgical repositioning, proper time for root development, proper socket formation, and minimal trauma are important for success. This case presents displaced impacted maxillary central incisor with dilacerated root. The development of root is Nolla's stage 7, and the tooth was treated by surgical repositioning. We can observe no root resorption and good healing pattern.

• Journal of Digital Convergence
• /
• v.16 no.2
• /
• pp.157-167
• /
• 2018

Internet only banking has been spreading rapidly since it was first introduced in Korea since 2017, but issues regarding its limitations continuously are rising. In this research, consumers' intention to switch have been empirically demonstrated toward the internet banking by applying the PPM theory. To achieve a purpose of the research, survey targeting total 132 person who have experiences of using KaKaobank have been implemented by using Smart PLS 3.0. In conclusion, it has been verified that the push and full effect have a positive effect on the consumers' intention to switch main bank and the degree of usage of KaKaobank have significantly influences on relation between mooring factor and consumers' intention to switch main bank. Through this study, the scope of the PPM theory applied in previous researches regarding consumer's service transition shall be extended to Fintech service and practically it provides implications for establishing a strategy to enter the Internet only bank market.

• Journal of Internet Computing and Services
• /
• v.15 no.1
• /
• pp.73-88
• /
• 2014

Online communities are getting more popular with the development of information technology. It is essential that community members participate actively and share their contents or opinions continuously for the success and growth of online communities. However, it is revealed that most of members just take the role of passive observer. They are lurking community information and contents without any contribution. In this sense, this study focuses on explore lurking behavior of online community members. This study investigates the effect of the characteristics of online community, community members, and personal traits on user's lurking intention. Member familiarity and community identity have a strong positive effect on de-lurking intention, while the perception of usefulness and ease of use for communities and member expertise have a negative effect on de-lurking intention. Interestingly, users with a low level of self-esteem have higher level of motivation of participation than those with a high level of self-esteem. Finally, this study proposes several strategies to enhance information and contents sharing in online communities.

• Journal of Korea Game Society
• /
• v.4 no.1
• /
• pp.41-49
• /
• 2004

Domestic On-line game market becomes keen competition gradually. So, work which advance into the new market is very important work which it takes future of Korean on-line industry. Recently, Chinese on-line game population is soaring by development of on-line infrastructure and elevation of the Intern et speed. Also, growth of China economy improved purchasing power. So, international market is desiring China market. Because China on-line game market has High potential energy, no one is opposed to truth that China market's advance gives opportunity of great success. So, this China market's charm advanced many domestic companies to China market. Also, many domestic companies are preparing for China advance. However, we did not understand perfectly circumstance of China market, and advanced impatiently without thorough preparation. So, occasion that the latest domestic companies fail greatly is increasing. Finally, we can know that China market's advance is difficulty. Therefore, we must analyze circumstance of China game market systematically, and do thoroughpreparation and preparatory audit that is enough with wider visual field. So, we must think investment about the future more than that think in a short time profit.

• Journal of Wetlands Research
• /
• v.13 no.2
• /
• pp.355-362
• /
• 2011

Bog bean (Menyanthes trifoliata L.) is an endangered species in Korea and a perennial macrophyte with long rhizome, inhabiting in oligotrophic fen or edges of montane lakes. To decide appropriate substrate type for restoration of this plant, we investigated the effect of substrates (e.g. water, Sphagnum mat, paddy soil) on growth of bog bean. There were two water conditions on paddy soils: saturated and flooded. We planted 10cm rhizome in mesocosms and measured coverage, leaf area, leaf number and rhizome biomass. Bog bean growed until August in water and Sphagnum mat and until October in paddy soil. Rhizome biomass at the end of November were 49, 77, 239, and 312g in water, Sphagnum mat, paddy soil with water saturated, and paddy soil with water flooded conditions, respectively. The results indicate that bog bean can grow better in paddy soil which have higher nutrient than water or Sphagnum mat which represents natural habitat condition of bog bean. This reveals that actual ecological niche of bog bean is different from fundamental ecological niche in substrate. For successful restoration of bog bean in nutrient rich area, it is necessary to know the competitiveness of bog bean in various substrate conditions.