• Title/Summary/Keyword: IT Infrastructure Level

Search Result 745, Processing Time 0.023 seconds

Analysis on the Residential Satisfaction of Individual, Household and Area-Level Characteristics using Multi-Level Models - Focusing on Public Housing in Seoul - (다층모형을 활용한 개인, 가구, 지역차원에서의 주거만족도에 관한 연구 - 서울시 공공임대주택 사례를 중심으로 -)

  • Sung, Jin-Uk;Nam, Jin
    • Journal of Korea Planning Association
    • /
    • v.54 no.4
    • /
    • pp.26-37
    • /
    • 2019
  • It is necessary to implement a wide range of housing welfare policies that citizens can experience in order to improve residents' the quality of life, as it emphasizes the balance of supply and management of public housing. The purpose of this study is to analyze the factors affecting residential satisfaction considering the three hierarchical levels of individual, household, and area. In the background of the study, the individuals' quality-of-life satisfaction determined not only by the individual but also by the various influencing environmental factors. This study targets 1,736 households, 3,239 persons in 464 areas in Seoul. The main research results are as follows. At the level one, there were influencing factors such as age(-), education level and income, and housing area per person, recipient of basic living(-), period(-) and RIR (at the level two). At the level three, west-south region(-) and social mix affect the complex of public housing. In consideration of living infrastructure, the closer to public transportation, public facilities, and medical facilities, the higher the satisfaction of public housing. The results of this analysis suggest that public support needs to focus on individual household members, but there is a need for ways to link it with the complex and the region.

Derivation of Rural Service and Infrastructure Factor Considering Urban-to-rural Migration - Focus on Welfare and Culture - (도시민 유입을 고려한 농촌 서비스 및 인프라 개선 주요 항목 도출 - 복지문화 요인을 중심으로 -)

  • Bae, Seung-Jong;Kim, Soo-Jin;Kim, Dae-Sik
    • Journal of Korean Society of Rural Planning
    • /
    • v.26 no.2
    • /
    • pp.39-49
    • /
    • 2020
  • This study was attempted to grasp the push-pull factors of urban to rural migrants in relation to services and infrastructure of rural welfare and culture. Online and offline survey were conducted for urban residents who were willing to return to the rural area and those who were already returning to the rural area. In the fields of health care, social welfare, and education, it was found that the satisfaction level of urban-to-rural migrants was relatively higher than those of latent urban-to-rural migrants. In the field of culture, leisure and sports, the level of satisfaction and concern were similar, so it was found that the expectations for the field were relatively high before returning rural area. As for the agreement degree to expand support, the demand for emergency medical facilities and dementia care program was the highest, and the demand for health care was found to be relatively high. The results of the survey on the top priority items indicate that latent urban-to-rural migrants require support of facility and space item and expansion of program item, and urban-to-rural migrants have high demand for expansion of program item in all field except healthcare field. The results of this study are expected to provide useful information for establishing the direction of the rural area development project in connection with the revitalization of policy of people return to rural area.

Assessment of the Particulate Matter Reduction Potential of Climbing Plants on Green Walls for Air Quality Management

  • Jeong, Na Ra;Kim, Jeong-Hee;Han, Seung Won;Kim, Jong-Cheol;Kim, Woo Young
    • Journal of People, Plants, and Environment
    • /
    • v.24 no.4
    • /
    • pp.377-387
    • /
    • 2021
  • Background and objective: To improve air quality, particulate matter (PM) can be reduced using green infrastructure. Therefore, in this study, we aimed to determine the particulate matter reduction potential of climbing plants used for green walls, an element of vertical green infrastructure. Methods: A sealed chamber with controlled environmental variables was used to assess the PM reduction level caused by climbing plants. PM concentration in the plant chamber was measured after two and four hours of PM exposure, and the reduction potential was assessed based on the leaf area. Results: Compared to the empty chamber (Control), the PM reduction speed per hour was higher in the plant chamber, which confirmed that climbing plants contribute to the reduction of PM in the air. The PM reduction speed immediately after exposure in the plant chamber was high, but this slowed over time. Additionally, PM has been continuously reduced in plants with large leaves. As a result of calculating the particulate matter reduction level based on leaf area, it was found that there was a difference by particle size. Actinidia arguta, Parthenocissus tricuspidata, Trachelospermum asiaticum, and Euonymus fortunei var. radicans showed a high reduction effect. The trichomes on the leaf surface of Trachelospermum asiaticum were found to affect PM reduction. Conclusion: PM adsorption on the leaf surface is an important factor in reducing its concentration. It was possible to compare different plants by quantifying the amount of PM reduction during a fixed time period. These results can be used as the basic data to select the plant species suitable for urban green walls in terms of PM reduction.

Behavior of Fill Dam Subjected to Continuous Water Level Change and Overflow (지속적 수위변동 및 월류에 따른 저수지 제체의 거동 연구)

  • Lee, Chungwon;Maeng, Youngsu;Kim, Yongseong
    • Journal of the Korean GEO-environmental Society
    • /
    • v.15 no.6
    • /
    • pp.41-48
    • /
    • 2014
  • In this study, the behavior of fill dam with continuous water level change considering velocity changes via centrifugal model test was investigated. In addition, the collapse of fill dam due to the overflow was also experimentally simulated. The experimental results demonstrate that the pore water pressures and displacements vary in proportion to the water-level-change velocity, and the displacement increment is independent to the water-level-change velocity. Also, it is confirmed that the continuous water level change induces to the progress of fill-dam deformation due to displacement accumulation and the fill-dam stability dramatically degrades owing to the overflow. Hence, the real-time monitoring of pore water pressures and displacements of fill dam, and the control of water level in heavy rain through the countermeasure such as opening sluice gates are needed to ensure the stability of fill dam.

A Study on the Implementation Level of e-Trade of Chinese Exporters in Shandong Province, China (중국 무역업체의 전자무역 구현수준 결정요인 연구 - 중국 산동성 지역 수출기업을 중심으로 -)

  • Shim, Sang-Ryul;Shao, Dan
    • International Commerce and Information Review
    • /
    • v.12 no.4
    • /
    • pp.3-24
    • /
    • 2010
  • This study aims to identify the determinants on the implementation level of e-Trade of Chinese exporters in Shandong Province, China. From the review of previous studies, a research model and six hypotheses were set up and tested by the multiple regression analysis with total 127 effective survey data. Among the company characteristics, the company size was statistically significant to the utilization range and the utilization level. But unlike former studies in Korea, the utilization range showed the (-) mark. On the other hand, the innovative attitude of CEO didn't show statistical significance to both the utilization range and the utilization level. Among the information characteristics, the IT infrastructure was not statistically significant to both the utilization range and the utilization level. On the other hand, the education and training of technical personnel didn't have a significant effect on the utilization range, but it had a statistically significant effect on the utilization level. Among the external environment, the intensity of competition had a statistically significant effect on both the utilization range and the utilization level. In summary, the implementation level of e-Trade of Chinese exporters in Shandong Province, China is still behind that of Korea. But the fact that the small and medium-sized Chinese exporters are using Internet more actively than large companies suggests some implications for those of Korea.

  • PDF

Multi-objective Genetic Algorism Model for Determining an Optimal Capital Structure of Privately-Financed Infrastructure Projects (민간투자사업의 최적 자본구조 결정을 위한 다목적 유전자 알고리즘 모델에 관한 연구)

  • Yun, Sungmin;Han, Seung Heon;Kim, Du Yon
    • KSCE Journal of Civil and Environmental Engineering Research
    • /
    • v.28 no.1D
    • /
    • pp.107-117
    • /
    • 2008
  • Private financing is playing an increasing role in public infrastructure construction projects worldwide. However, private investors/operators are exposed to the financial risk of low profitability due to the inaccurate estimation of facility demand, operation income, maintenance costs, etc. From the operator's perspective, a sound and thorough financial feasibility study is required to establish the appropriate capital structure of a project. Operators tend to reduce the equity amount to minimize the level of risk exposure, while creditors persist to raise it, in an attempt to secure a sufficient level of financial involvement from the operators. Therefore, it is important for creditors and operators to reach an agreement for a balanced capital structure that synthetically considers both profitability and repayment capacity. This paper presents an optimal capital structure model for successful private infrastructure investment. This model finds the optimized point where the profitability is balanced with the repayment capacity, with the use of the concept of utility function and multi-objective GA (Generic Algorithm)-based optimization. A case study is presented to show the validity of the model and its verification. The research conclusions provide a proper capital structure for privately-financed infrastructure projects through a proposed multi-objective model.

Implementation of Java/RTI Level One Test Procedures (Java/RTI를 위한 Level One Test Procedures 구현)

  • 이정욱;김용주;김영찬
    • Journal of the Korea Society for Simulation
    • /
    • v.12 no.4
    • /
    • pp.41-50
    • /
    • 2003
  • HLA (High Level Architecture) is the object, time, and interface standard that proposed for distribution simulation in the US Department of Defense. The HLA is defined by three components: Rules, the HLA Interface Specification, and the Object Model Template (OMT). The RTI (Run-Time Infrastructure) software implements the interface specification. It provides services to simulation applications. To test whether a RTI software is suitable for the standard and all service was implemented is performed through two phases of processes proposed by DMSO. In this paper, we implement Level One Test Procedures of DMSO and apply to NetCust's RTI software. The experimental results are discussed.

  • PDF

The Aggregate Production Efficiency of IT Investment: a Non-Linear Approach

  • Repkine, Alexandre
    • Proceedings of the Technology Innovation Conference
    • /
    • 2002.02a
    • /
    • pp.59-89
    • /
    • 2002
  • The rapid diffusion of information and telecommunication (IT) technologies during the recent decennia produced fundamental changes in the economic activity at a global level, resulting in what became coined as the "new economy". However, empirical evidence on the contribution of IT equipment to growth and productivity is at best mixed, with the more or less consistent results on the positive link between the two relating to the United States in the 1990-s. Although the empirical literature on the link between IT investment and economic performance employs a wide variety of methodologies, the overwhelming majority of the studies appears to be employing the assumption of linearity of the IT-performance relationship and predominantly explores the direct nature thereof. In this study we relax both these assumptions and find that the indirect, or aggregate productive efficiency, effects of IT investment are as important as are the direct ones The estimated non-linear nature of the indirect relationship between IT investment intensity and productive efficiency accommodates the concepts of critical mass and complementary (infrastructure) capital offered in the literature. Our key finding is that the world economy′s average level of IT investment intensity remained below the estimated critical mass. Since in this study we developed a methodology that allows one to explicitly measure the critical mass of IT investment intensity, its individual estimation at a country or industrialsector level may help evaluate the extent to which IT investment activity has to be encouraged or discouraged.

  • PDF

New Paradigm in Statistical Education

  • Lee, Jae-Woo;Lee, Jea-Young
    • 한국데이터정보과학회:학술대회논문집
    • /
    • 2003.05a
    • /
    • pp.49-55
    • /
    • 2003
  • Korea has the most level of Internet Infrastructure in the world. But, in the educational aspect, it does not have an enough foundation about Statistical Education. In this paper we consider the methods of activation about statistics. Also, we present what is the Enterprise Guide and what does it have characteristics as statistical analysis tool from educational point of view. And we suggest a new paradigm in statistical education.

  • PDF

Implementation of Hydrological Survey Scheduling using Real-Time Water Level Information (실시간 수위정보를 활용한 수문조사 스케줄링 구현)

  • Jae Myeong Choi
    • Journal of Platform Technology
    • /
    • v.11 no.2
    • /
    • pp.66-75
    • /
    • 2023
  • Hydrological survey measurement technology has improved due to the introduction of high-tech equipment and advances in technology, but hydrological survey still requires a lot of manpower and time, and the manpower invested is very limited compared to the size and scope of work. In addition, although automatic flow measurement facilities are in operation, it is difficult to expand them nationwide due to limited field conditions. Therefore, it is necessary to improve the operating infrastructure and environment rather than the measurement technology itself for hydrological investigation. In addition, in terms of flow investigation, it is necessary to schedule an investigation using real-time water level information in order to inventory the accuracy of the water-flow relationship equation and improve work efficiency. Therefore, in this paper, research related to domestic hydrological surveys was analyzed and a hydrological survey scheduling system using real- time water level information based on Open API was implemented to increase the economic and efficiency of hydrological surveys.

  • PDF