가치기반 및 잠재프로파일을 통한 로보택시 사용자 수용성 평가

김인수(KIM, Insu),오세창(OH, Sei-Chang),김정화(KIM, Junghwa),양충헌(YANG, Choongheon) 대한교통학회 2023 대한교통학회지 Vol.41 No.6

Recently, as innovative technologies such as information and communication technology, artificial intelligence, and big data have been converged and combined in the transportation field, fierce competition is underway to preoccupy the future mobility market, including autonomous vehicles. As a derived service case in the autonomous vehicle field, there is an electric vehicle-based Robo Taxi, which has the potential to lead to the spread of autonomous vehicles and various social changes. Therefore, an important prerequisite for successful activation along with commercialization of Robo Taxi is that it should be based on user acceptability. A Technology Acceptance Model has been introduced to analyze the acceptability of people using advanced technologies such as autonomous vehicles, and recently, a Value-based Adoption Model has been applied that considers benefits and sacrifices overall. The purpose of this study was to provide theoretical and practical guidelines to help spread and spread Robo Taxi by analyzing factors that affect users intention to accept Robo Taxi through Value-based Adoption Model as well as through Latent Profile Analysis to find out what characteristics and effects each combination of factors show and affects within the Robo Taxi adoption group. First, the factors influencing user acceptance of Value-based Adoption Model considering Robo Taxi benefits and sacrifice factors were analyzed. Perceived benefits, perceived sacrifice, vehicle-sharing services, taxis, self-driving cars, and preferences for private cars were selected as independent variables to confirm the impact on perceived value and adoption intention for Gyeonggi-do residents. In addition, Latent Profile Analysis was performed on Value-based Adoption Model variables related to Robo Taxi acceptance, and individual item response patterns and similar response characteristics were grouped into the same group or group and analyzed in detail. In the context of a lack of acceptance research on autonomous driving-based Robo Taxi, this study used Value-based Adoption Model and Latent Profile Analysis to analyze factors for enhancing Robo Taxi acceptance and draw relevant implications. Therefore, it is significant as a meaningful basic study for expanding the acceptability of Robo Taxi, and based on this, it is expected to be of great help in activating Robo Taxi services.

On the Total Fertility Rate as an Indicator of Local Population Changes

( Insu Chang ) 한국보건사회연구원 2021 Research in Brief Vol.2021 No.10

경기 양평군 첫째 자녀 출산지원금 효과 분석과 정책적 함의

장인수(Insu Chang),손호성(Hosung Sohn) 경기연구원 2021 GRI 연구논총 Vol.23 No.3

Influencing factors to have an additional child by working women in Korea

Chang, Insu,Kim, Brian H.S. Elsevier 2018 The Social science journal Vol.55 No.2

<P><B>Abstract</B></P> <P>This study aims to explore the effects of individual and regional characteristics on working women’s intention of additional childbirth in Korea. Since most the individuals generally revolve within their own hierarchically structured regions, data from 2012 Population and Housing Census Statistics are utilized in the analysis. The hierarchical generalized liner model is employed to find out the effects of individual and regional factors, while comparisons of these results are made using the binary logistic model. And finally, Heckman 2-stage model is applied in order to determine if selection bias is present. The results indicate that the working women ultimately deal with economic aspects on their decision for additional childbirth. Regional characteristics variables, namely unemployment rate, city type, private education cost, workplace daycare facilities and government budget for childcare, reflect economic aspects in households. These findings address important policy implications to overcome low fertility rate in the era of increasing number of working women.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Many of the policies still lacks considerations for difficulties associated with childbirths for the working women. </LI> <LI> Explores the effects of individual and regional characteristics on working women’s intention of additional childbirth in Korea. </LI> <LI> The hierarchical generalized liner model and binary logistic model are employed for the analysis. </LI> <LI> Regional characteristics significantly influence intention of having additional children among married working women. </LI> <LI> Regional characteristics consist of unemployment rate, city type, education cost, daycare facilities and childcare budget. </LI> </UL> </P>

Nonlinear Attitude Control of a Tether-Connected Multi-Satellite in Three-Dimensional Space

Insu Chang,Sang-Young Park,Kyu-Hong Choi IEEE 2010 IEEE transactions on aerospace and electronic syst Vol.46 No.4

<P>The objective of the current research is to analyze the attitude dynamics and control of a tethered satellite formation flying where the tethered units are modeled as extended rigid bodies. The three-inline array system is used in this study, and the general formulation of the equations of motion of the system is obtained through a Lagrangian approach. In this research, attitude motions of the tethered satellite system are analyzed in a three-dimensional free-space system to complement previous works. The state-dependent Riccati equation (SDRE) controller is used to regulate the attitude errors. The stability region for the SDRE-controlled tethered satellite system is also estimated using a numerical method to show globally asymptotic stability for the control method. Centralized and decentralized approaches are applied to the dynamic system to compare the performance of controlling the attitude motion. The SDRE controller performs well in both the centralized and decentralized approaches for the attitude control of tethered satellites in formation flying.</P>

A Decentralized Coordinated Attitude Control for Satellites with Thrusters in Formation Flying via the State-Dependent Riccati Equation Technique

Insu Chang(장인수),Sang-Young Park(박상영),Kyu-Hong Choi(최규홍) 한국항공우주학회 2007 한국항공우주학회 학술발표회 논문집 Vol.- No.-

Issues and Implications of Policy Responses Taken by Metropolitan Municipalities to Low Fertility

( Insu Chang ) 한국보건사회연구원 2023 Research in Brief Vol.2023 No.3

광역지방자치단체 저출산 대응 정책 모니터링과 정책적 시사점

장인수 ( Chang Insu ) 한국보건사회연구원 2023 보건복지포럼 Vol.317 No.-

이 글은 광역지방자치단체 저출산 대응 정책 추진 현황에 대한 모니터링 결과이다. 이를 바탕으로 정책 개선 대안을 제시하였다. 구체적으로 제4차 저출산고령사회기본계획 2021년도 시행계획의 전반적인 내용을 바탕으로 정책 분야별 사업 수와 예산 규모, 내용 및 구성상 한계점을 검토하였다. 검토 내용을 토대로 효과적인 정책 추진 현황 관리를 위한 시행계획 사업 분류 틀, 성과평가 체계 구축을 역설하였다. 또한 지방자치단체 저출산고령사회대응위원회와 같은 지역의 저출산 대응 정책 거버넌스 체계 개편, 시행계획 작성 관련개선의 필요성을 함께 제시하였다. 이 글의 정책 개선 대안은 광역지방자치단체가 정책 추진 주체이자 관할 구역 내 기초지방자치단체 간 조율 및 관리 주체, 중앙·기초 간 정책 소통의 매개체라는 특성에 주목한 데 기인한다. This article presents the current status of fertility policies put into effect by local governments in Korea, and suggests the future direction for policy improvement. In reviewing the 4th Basic Plan for Low Fertility and Aging Society implemented in 2021, we examined the number and budget size of projects underway in different policy areas. In addition, this article outlines the limitations these projects have and presents what should be done to make improvements on them in terms of their substance and composition. This article emphasizes the need for the establishment of a project classification framework to promote effective management of policy implementation, establishment of performance evaluation system, reorganization of fertility policy governance system, and improvements related to the preparation of action plans.

출산지원금의 효과와 정책적 함의: 충청남도 공주시 사례를 중심으로

장인수 ( Insu Chang ) 충남연구원 2021 충남연구 Vol.5 No.1

최근 지역 인구 감소에 따른 지역 위기 상황을 극복하기 위한 인구 정책이 다양하게 추진되고 있는 바, 대표적인 지역 인구 정책으로 이해되고 있는 출산지원금이 지역 인구의 자연적, 사회적 증가를 도모하는 데 효과가 있는지 살펴볼 필요가 있다. 이에 본 연구에서는 지속 인구가 감소하고 있는 충청남도공주시를 사례로 하여 출산지원금의 자연적, 사회적 증가에 어떠한 영향을 미치고 있는지 살펴보았다. 2018년부터 양적 수준이 더욱 증가한 공주시 첫째아 출산지원금 효과를 2018-2019년의 기간 동안 분석한 결과, 첫째아 출산지원금은 이 기간의 합계출산율, 조출생률, 인구 대비 첫째아 출산 비율을 유의하게 증가시키는 것으로 나타난 반면, 20-30대 유입 인구에는 유의한 영향을 미치지 못하는 것으로 나타났다. 종합적으로, 본 연구의 결과를 바탕으로 출산지원금 정책의 실효성을 제고하기 위한 정책적 함의를 제시하였다. As a variety of demographic policies are being promoted in response to the regional crisis caused by the recent decrease in the regional population, it is necessary to examine whether the childbirth subsidy, which is understood as a representative regional population policy, has been effective in promoting the natural and social growth of the local population. For an empirical analysis, we conducted a case study of Gongju City, Chungcheongnam-do, where the population is continuously declining. Based on the analysis for the period 2018-2019, we found that the first-born childbirth subsidies in Gongju, which were further raised in 2018, significantly increased the total fertility rate, the crude birth rate, and the ratio of first-born births to the population. However, it did not have a significant effect on the net-migration of people in their 20s and 30s during this period. Based on the results of this study, policy implications for improving the effectiveness of regional population policies are presented.

출산 행동의 주요 특징과 함의

장인수 ( Insu Chang ) 한국보건사회연구원 2022 보건복지포럼 Vol.308 No.-

이 글은 ‘2021년도 가족과 출산 조사’ 자료를 활용하여 출산 행동의 주요 특징을 살펴보고 이를 바탕으로 더욱 심층적인 연구 과제와 정책 방향을 제시하는 것을 목적으로 한다. 주요 결과는 다음과 같다. 임신 결과와 출생아 수는 가구소득과 교육 수준 같은 요인에 의한 집단 간 차이가 있었으며, 자녀 출산에 대한 부부의 의사 결정에서 상대방과 함께 의사 결정을 한다는 응답 비율이 높은 것으로 나타났다. 아울러 난자 또는 정자 냉동 보관 의향은 출산 의향을 나타내는 또 다른 요인이자 만혼의 특성과 무관하지 않음을 보여 주었다. 이 글의 관측 결과는 향후 저출산 대응 정책을 추진할 때 출산 행동과 이를 둘러싼 다양한 요인 간 연관성에 대한 더욱 심층적인 분석이 선결되어야 할 필요성을 시사한다. This article aimed at providing implications for further research and policy by examining the main characteristics of childbearing behavior using the data of the '2021 Family and Fertility Survey’. Our results of analysis imply that there are many questions, regarding inequality, rearing of children, and late marriage, to take into consideration in a multifaceted manner for enhancing the effectiveness of policies. That is, we need a more complex analysis of childbearing and its various factors in low-fertility policy responses.