• The Journal of the Korea Contents Association
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• v.6 no.1
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• pp.126-136
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• 2006

This paper intended to observe the present state of the U-City development in local governments and to present the basic view-point to carry out it in the context of total urban area. Also, this paper has a meaning to present a fundamental perspective for making plan to go on the U-City development. For this reason, it was investigated on the concept of 'Ubiquitous', the related technologies to realize the U-City, the related policies for 'Ubiquitous' in the central government, and the circumstances of the U-City development in the local government. Finally, on developing the U-City in local government, this paper presented its developing direction in the context of the whole urban structure and in the relation with the developed urban areas.

• Journal of Environmental Science International
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• v.30 no.11
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• pp.915-924
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• 2021

Today, as interest in the importance of urban parks increases, many citied internationally are actively creating small parks, but their maintenance systems remain ineffective. Accordingly, in this study, the limitations and problems in the operation and management of urban parks were derived by examining previous studies on overall urban park maintenance and management. Based on this, the study tried to understand the actual state of maintenance and management of small parks through data surveys and field surveys related to budget execution on case sites. Then, we sought to clarify the actual state of maintenance and management of small parks through data surveys and field surveys regarding the budget execution of case sites as a basis for research to prepare an efficient and systematic improvement plan for the maintenance management system of city parks.

• Korean Journal of Remote Sensing
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• v.30 no.3
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• pp.399-415
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• 2014

The intensity of stormwater runoff is particularly acute across cities located in arid climates. During flash floods loose sediment and pollutants are typically transported across sun-hardened surfaces contributing to widespread degradation of water quality. Rapid, dense urbanization exacerbates the problem by creating continuous areas of impervious surfaces, perforated only by a few green patches. Our work demonstrates how the latest techniques in remote sensing can be used to routinely measure urban land cover types, impervious cover, and vegetated areas. In addition, multiple regression models can then infer relationships between urban land use and land cover types with stormwater quality data, initially sampled at discrete monitoring sites, and then extrapolated annually across an arid city; in our case, the city of Phoenix in Arizona, USA. Results reveal that from 30 storm event samples, solids and heavy metal pollutants were found to be highly related with general impervious surfaces; in particular, with industrial and commercial land use types. Repercussions stemming from this work include support for public policies that advocate environmental sustainability and the more recent focus on urban livability. Also, advocacy for new urban construction and re-development that both steer away from vast unbroken impervious surfaces, in place of more fragmented landscapes that harmonize built and green spaces.

• Smart Structures and Systems
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• v.30 no.6
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• pp.583-599
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• 2022

In this paper, a multi-objective wireless sensor network configuration optimization method is proposed. The proposed method aims to determine the optimal information and lifespan wireless sensor network for structural health monitoring of large-scale infrastructures. In particular, cluster-based wireless sensor networks with multi-type of sensors are considered. To optimize the lifetime of the wireless sensor network, a cluster-based network optimization algorithm that optimizes the arrangement of cluster heads and base station is developed. On the other hand, based on the Bayesian inference, the uncertainty of the estimated parameters can be quantified. The coefficient of variance of the estimated parameters can be obtained, which is utilized as a holistic measure to evaluate the estimation accuracy of sensor configurations with multi-type of sensors. The proposed method provides the optimal wireless sensor network configuration that satisfies the required estimation accuracy with the longest lifetime. The proposed method is illustrated by designing the optimal wireless sensor network configuration of a cable-stayed bridge and a space truss.

• International Journal of Computer Science & Network Security
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• v.22 no.11
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• pp.199-203
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• 2022

The article aims at studying the institution of human rights and civil freedoms with due regard to the anthropological approach in the theory of law. To the greatest extent, the provisions of non-classical legal science are confirmed in the Anglo-Saxon legal family, which endows the judge with law-making functions. In this regard, the role of a person in the legal sphere is increasing. The main research method was deduction used to study the anthropological approach to the institution of human rights and freedoms. The article also utilizes the inductive method, the method of systematic scientific analysis, comparative legal and historical methods. To solve the task set, the authors considered the legal foundations and features of human rights and freedoms in the modern world. The article proves that the classical legal discourse, represented by various types of interpretation, reduces the rule of law to the analysis of its logical structure and does not answer the questions posed. It is concluded that the prerequisite for the anthropological approach in the theory of law is the use of human-like concepts in modern legislation (guilt, justice, peculiar ferocity, child abuse, willful evasion, conscientiousness).

• 한국공간정보시스템학회:학술대회논문집
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• 2007.06a
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• pp.29-36
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• 2007

유비쿼터스라는 새로운 패러다임의 등장과 IT 기술의 급격한 발전에 힘입어 도시에 유비쿼터스 기술을 적용하여 도시민의 삶의 질과 경쟁력을 향상시키는 도시, 즉 u-City가 다양한 차원에서 추진 중에 있다. 효율적인 u-City 구현을 위해서는 다양한 시도들이 한데 묶여 진정한 u-City로써의 시너지 효과를 내는 것이다. 이를 위해 현 시점에서의 상황을 직시하고 관련 정책 및 사업에 대한 계속적인 모니터링을 통해 국토, 도시, 교통, 환경, 행정, 문화 등 모든 것이 한데 어우러져 최고의 효과를 가져 올수 있는 진정한 u-City 개발이 필요할 것이다. 이에 본 연구에서는 여러 부처에서 진행/계획 중인 u-City 관련 연구 및 사업의 여건분석을 통해 문제점을 도출하고 효과적인 u-City 발전 방안에 대해 고찰해 보고자 한다.

• Parasites, Hosts and Diseases
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• v.53 no.4
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• pp.493-496
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• 2015

Toxoplasmosis, caused by Toxoplasma gondii, is a parasitic zoonosis with worldwide distribution. The present study investigated the prevalence of T. gondii in dogs in Zhanjiang city, southern China, using both serological and molecular detection. A total of 364 serum samples and 432 liver tissue samples were collected from the slaughter house between December 2012 and January 2013 and were examined for T. gondii IgG antibody by ELISA and T. gondii DNA by semi-nested PCR based on B1 gene, respectively. The overall seroprevalence of T. gondii IgG antibody was 51.9%, and T. gondii DNA was detected in 37 of 432 (8.6%) liver tissue samples. These positive DNA samples were analyzed by PCR-RFLP at 3'- and 5'-SAG2. Only 8 samples gave the PCR-RFLP data, and they were all classified as type I, which may suggest that the T. gondii isolates from dogs in Zhanjiang city may represent type I or type I variant. This study revealed the high prevalence of T. gondii infection in dogs in Zhanjiang city, southern China. Integrated measures should be taken to prevent and control toxoplasmosis in dogs in this area for public health concern.

• Proceedings of the KIEE Conference
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• 2003.07e
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• pp.79-82
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• 2003

The switching-mode power converter has been widely used because of its features of high efficiency and small weight and size. In the switching-mode power converter, the output voltage is generally controlled by varying the duty ratio of main switch. When a converter operates in steady state, duty ratio of the converter is kept constant. So the power of switching noise is concentrated in specific frequencies. The more white noise is injected, the more conducted EMI is reduced. But output-voltage is not sufficiently regulated. This is the reason why carrier frequency selection topology is proposed. In the case of carrier frequency selection, output-voltage of steady state and transient state is fully regulated. Spectrum analysis is performed on the Phase current and the CM noise voltage. The former is measured with Current Probe and the latter is achieved with LISN, which are connected to the spectrum analyzer respectively.

• Journal of Korean Home Economics Education Association
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• v.5 no.1
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• pp.121-132
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• 1993

The purpose of this study is to evaluate the state and problems on sex education of junior & senior high schools in Taegu city & Kyungbuk province and then to try to find the solutions. This article is consisted of four parts: the present state of sex education, how to improve sex education, the problems of teacher training and the actual condition of educational materials for that. The item of questionnaires was analyzed by SAS-PC program. the results are marked with frequency, percentage, mean and $\chi$$^2$(chi-square). For effective and better sex education in high schools, development & distribution of various audio-visual teaching material, and systematic & correlative arrangement of educational contents are to be first requisite. Concerning about the teacher training it is needed that to establish the standard o general management and equipment of instruction system.

• Journal of Korean Medicine for Obesity Research
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• v.11 no.2
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• pp.1-14
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• 2011

Objectives: Some papers have raised a lot of concerns about relation among the prevalence of metabolic syndrome, serum ferritin and metabolic syndrome. Accordingly, we researched relation between the prevalence of metabolic syndrome and iron state. Methods: A group of 1304 test subjects were gathered in university student medical examination in Sungnam metropolitan city. BIA for body position, body size and blood test were estimated. Results & conclusions: The study represents an adult population of young people in their twenties. Therefore there is so little level for prevalence of metabolic syndrome than have ever known things. And actually, metabolic syndrome was closely connected with so high iron state.