• 한국사회정책
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• v.25 no.2
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• pp.281-304
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• 2018

This paper aims at analysing what impacts the experience of self-employed business have had on the income mobility. Since 2000s, the flexibilization of labor market and the population aging led to the increase of the number of self-employed job as many retirees at the age of early 50s has set up the self-employed business as a bridge job. However, previous researches just have emphasized on the impoverishment of the self-employed, but not focused on what different effects the experience of self-employed had on the income class mobility by age group. This paper compares the difference in the income class mobility by age group and employment status, and analyses its longitudinal trends. According to the result, as a whole the experience of self-employed has positive effect on the upper mobility of income class, but it become disadvantageous for the upper mobility as the age goes up. When belonging to the age group over 60s, the experience of self-employed rather increases the risk of lowering income class. Just as the experience of self-employed has different effects on income class mobility by age group, so the differentiated measures for age groups are demanded.

• Korean Journal of Social Welfare
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• v.68 no.2
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• pp.213-232
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• 2016

The purpose of this study is to explore the stress profile that adolescent perceives by using Latent Profile Analysis (LPA), and to examine the effect of characteristics variable per groups that appeared in profile. By using the cross-section data of 'A survey on the human right of Korean children and adolescent in 2013' issued by National Youth Policy Institute, the LPA concerning the stress type was conducted and surveyed 9,521 adolescents from fourth grade in elementary school to seniors in high school nationwide. The result of this study shows that two class types were selected according to the goodness-of-fit index and latent class classification rate. Type 1 is named low-risk group as they show low level, whereas type 2 is named relative risk group as they show high level. In order to predict the characteristics of adolescent stress, the study conducted Binary Logistic Regression analysis on the basis of low-risk group. There is higher probability to belong to relative risk group, the more they are female students than male students, the less their subjective health condition and happiness, the more runaway experience, the less school grades and the less economic affluence in their household. The implication of this research, its limitation and direction of follow-up research were suggested.

• Journal of the Korean Regional Science Association
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• v.37 no.4
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• pp.33-47
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• 2021

In urban declining areas, the population is decreasing, and drying environments such as buildings and facilities are aging. Therefore, it is vulnerable in the event of disaster, and recovery takes a lot of time and money. The purpose of this study is to develop an evaluation technique for comprehensively diagnosing disasters in declining areas and to present implications through case analysis. Evaluation indicators were selected to calculate the comprehensive diagnosis index of disasters, and weights were calculated for each class, including disaster types, components, and evaluation indicators, through Analytic Hierarchy Process analysis. The comprehensive diagnoses index for each type of disaster was calculated with the calculated weight, and the risk according to the level of urban decline was analyzed. As a result of analyzing Seoul as a case area, it was analyzed that the overall risk of disasters was high in southern regions such as Seocho-gu, Dongjak-gu, Geumcheon-gu, and Gangseo-gu, and relatively low in downtown and northern Seoul, parks and green areas. The results of this study are of academic significance in that they presented a comprehensive diagnostic index evaluation system and technique for each type of disaster, including natural and social disasters.

• Journal of the Korean Society of Clothing and Textiles
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• v.25 no.9
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• pp.1621-1632
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• 2001

본 연구는 소비자의 실제적인 의복 소비 행동을 설명할수 있는 가치 개념을 제시하기 위하여 의복 소비가치의 구체적 유형을 밝히고, 적합하고 신뢰성 있는 의복 소비가치 척도를 구성 할 수 있는 기초자료를 제시 하고자 하였다. 본 연구에서는 Sheth(1991)의 소비 가치 이론과 의류학 및 소비자 행동분야의 다양한 이론을 토대로 초점집단면접(Focus Group Interview)을 통하여 소비가치에 대한 탐색적 접근을 시도한 결과를 논의하였다. 의복의 구매와 착용의 선택상황에 영향을 미치는 소비가치는 Sheth(1991)의 5가지 소비가치 유형인 기능적 가치, 사회적 가치, 감정적 가치, 진귀적 가치, 상황적 가치 및 의복제품의 특성에 따른 자기표현적 가치로 분류되었다. 기능적 가치는 물리적 속성, 물리적 기능, 도구적 성과와 관련되었으며, 사회적 가치는 사회계층, 준거집단, 인구통계 적 특성 집단, 문화-민족적 집단과의 관련성 에 대 한 가치로 구성되었다. 감정적 가치는 긍정적, 부정적 감정 및 심미성 요인으로 구성되었으며, 진취적 가치는 다양성추구행동 요인 및 유행성의. 새로움 추구 요인과 관련되었다 또한 상황적 가치는 의복착용상황, 구매상황, 커뮤니케이션 상황으로 구성되었으며, 자기표현적 가치는 성격, 이미지 표현, 개성추구, 유행추구 등의 요인으로 구성되었다. 본 연구의 이러한 결과를 바탕으로 소비가치에 대한 양적 연구를 실시한다면, 보다 객관적인 구조를 파악하고 신뢰성 있는 측정 문항을 개발할 수 있을 것이다.

• The Magazine of the IEIE
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• v.30 no.2
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• pp.50-50
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• 2003

광교환 및 광라우팅 기술은 광인터넷에 접속되는 이용자가 원하는 인터넷 서비스를 실시간으로 제공받을 수 있도록 대상 목적지를 찾아 최단 시간내에 접속시켜 주기 위해 광인터넷 제어평면을 이용한다 GMPLS기반 광인터넷 제어평면은 노드간 신호 유형 및 신호속도, 그리고 전송 프레임 구조 등과 무관한 호/연결 접속 능력을 제공하기 위해 기존의 계층 2.5 스위칭 구조인 MPLS개념에 계층 1스위칭 구조로까지 확장된 개념이다. 이 확장된 개념을 기능 구조화하고 시스템화하기 위해서는 표준화 상황 및 기술개발 동향을 분석하고, 노드간 상호연동성을 보장할 수 있는 현실적인 시나리오와 기능 구조를 우선 결정해야한다. 본 논문에서는 시스템 엔지니어링 관점에서 광인터넷 제어평면의 개념 단계에서부터 시스템 단계에 이르기까지 표준화 상황, 제어평면 기능, 그리고 시스템 적용 등을 단계적으로 기술함으로서, 제어평면 관련 광인터넷 시스템에 좀더 가까이 다가서고자 한다.

• The Magazine of the IEIE
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• v.30 no.2
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• pp.160-168
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• 2003

광교환 및 광라우팅 기술은 광인터넷에 접속되는 이용자가 원하는 인터넷 서비스를 실시간으로 제공받을 수 있도록 대상 목적지를 찾아 최단 시간내에 접속시켜 주기 위해 광인터넷 제어평면을 이용한다 GMPLS기반 광인터넷 제어평면은 노드간 신호 유형 및 신호속도, 그리고 전송 프레임 구조 등과 무관한 호/연결 접속 능력을 제공하기 위해 기존의 계층 2.5 스위칭 구조인 MPLS개념에 계층 1스위칭 구조로까지 확장된 개념이다. 이 확장된 개념을 기능 구조화하고 시스템화하기 위해서는 표준화 상황 및 기술개발 동향을 분석하고, 노드간 상호연동성을 보장할 수 있는 현실적인 시나리오와 기능 구조를 우선 결정해야한다. 본 논문에서는 시스템 엔지니어링 관점에서 광인터넷 제어평면의 개념 단계에서부터 시스템 단계에 이르기까지 표준화 상황, 제어평면 기능, 그리고 시스템 적용 등을 단계적으로 기술함으로서, 제어평면 관련 광인터넷 시스템에 좀더 가까이 다가서고자 한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.103-104
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• 2015

IoT의 주요 구성요소는 기존의 데스크 탑 외에 디바이스 즉, 단말 기기들이 주류를 이룬다. 이러한 IoT 디바이스들은 데이터의 유형이나 접근 방법이 다양하고, 실시간적 데이터 생산과 제어를 위한 양방향 데이터 접근 지원을 필요로 한다. 이러한 IoT 디바이스를 연결하여 클라우드 형 서비스로 개발하기 위해서는 디바이스 속성 관리가 용이한 도메인 관리 방법과 디바이스에 대한 일관된 접근 인터페이스를 제공하는 플랫폼이 필요하다. 이 논문에서는 리눅스 파일시스템 후면 즉, 사용자 영역에 리눅스 파일 시스템 스타일의 DB 기반 가상 파일시스템을 구축하여 IoT 디바이스를 연결하고 관리하는 프레임워크를 제시한다. 구현 가상 파일시스템은 계층적 디렉터리 체계를 DB에 유지하면서 단말 노드에는 지리적으로 산재한 IoT 디바이스들에 대한 속성 정보를 관리한다. 디렉터리 및 IoT 디바이스의 추가 삭제 검색 등 도메인 관리는 mkdir. mknod, ls, find 등 리눅스 고유 명령어로 이루어지고, 모든 IoT 디바이스에 대한 접근은 open(), read(), write(), close() 등 POSIX 인터페이스를 통해 가능하다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.11
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• pp.5534-5541
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• 2012

This paper classifies cities in the metropolitan area based on natural hazard vulnerability. The procedure of our empirical analysis is divided into three parts as follows: First, it summarizes variables related to natural hazard vulnerability to significant factors, carrying out principal component analysis. Second, it classifies cities in the metropolitan area, conducting cluster analysis using factor scores. Lastly, it proposes differential measures for natural hazard mitigation for classified cities in the metropolitan area, based on natural hazard vulnerability.

• Korean Journal of Social Welfare
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• v.63 no.4
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• pp.277-299
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• 2011

The current study analyzed the tax structure in the welfare states. The appropriate tax structure of universal welfare state should be based on expanding all taxes, rather than choosing between direct and indirect, progressive and regressive, or mobile and immobile tax. The revenue for the universal welfare payment should be raised by levying tax on all people provided that the welfare payment is made available to all people. The analysis led to classification of tax structure into the high tax European model and the low tax English and East Asian model. The high tax European model was further classified into the balance tax model and the high social security model. The low tax English and East Asian model was classified into the low social security model and the high property tax model. Based on the results, the study maintained that the universal welfare states need not only to expand welfare resources but to develop tax system that corresponds to the universal welfare system.

• Journal of Wetlands Research
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• v.6 no.3
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• pp.55-70
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• 2004

The wetland ecosystem is a complex products of various erosion force, accumulation as water flows, hydrogeomorphic units, seasonal changes, the amount of rainfalls, and other essential element. There is no single, correct, ecologically sound definition for wetlands because of the diversity of wetlands and the demarcation between dry and wet environments occurs along a continuum, but wetland plays various ecosystem functions. Despite comprehensive integration through classification and impact factors there is still lacking in systematic management of wetlands. Classification system developed by the USFWS(1979) is hierarchical progresses from systems and subsystems at general levels to classes, subclasses, dominance types, and habitat modifiers. Systems and subsystems are delineated according to major physical attributes such as tidal flushing, ocean-derived salts, and the energy of flowing water or waves. Classes and subclasses describe the type of substrate and habitat or the physiognomy of the vegetation or faunal assemblage. Wetland classes are divided into physical types and biotic types. For the wise management of wetlands in Korea, this study was carried out to examine methodology of USFWS classification system and discuss its application for Korean wetland hydrogeomorphic units already known. Seven wetland types were chosen as study sites in Korea divided into some different types based on USFWS system. Three wetland types belonging to palustrine system showed no difference between Wangdungjae wetland and Mujechi wetland, but Youngnup of Mt. Daeam was different from the former two types at the level of dominant types. This fact means that setting of classification system for management of wetland is needed. Although we may never know much about the wetland resources that have been lost, there are opportunities to conserve the riches that remain. Extensive inventory of all wetland types and documentation of their ecosystem functions are vital. Unique and vulnerable examples in particular need to be identified and protected. Furthermore, a framework with which to demonstrate wetland characteristics and relationships is needed that is sufficiently detailed to achieve the identification of the integrity and salient features of an enormous range of wetland types.