• 디지털융복합연구
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• 제19권1호
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• pp.11-22
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• 2021

코로나19 확산으로 초·중·고등학교에서 비대면 원격수업이 시행되고 있으나 가정의 ICTs 환경이 어떻게 갖추어져 있는지에 대한 실증데이터를 분석한 연구는 부족한 상황이다. 가정의 ICTs 환경이 원격수업에 적합한지 알아보기 위해 한국미디어패널조사 데이터를 사용하여 2012년과 2019년 사이 스마트기기 보유량의 변화와 가구 특성에 따른 스마트기기 보유량 차이를 살펴보았다. 본 연구결과에 따르면 2012년에 비해 2019년에는 데스크톱 PC 보유량은 줄어들었으나 노트북 PC, 태블릿 PC, 스마트폰의 보유량이 증가하여 전체적으로는 대부분의 가정에서 원격수업 환경이 갖추어진 것으로 볼 수 있다. 그러나 스마트기기에서 스마트폰을 제외할 경우, 가구소득 500만원 미만 가정에서는 자녀수 별로 원격수업에 필요한 기기를 갖추지 못한 비율이 약 30%로 나타나 가구소득에 따라 원격수업 여건이 다름을 보여준다. 본 연구는 가정의 ICTs 환경을 분석하고 소득집단에 따라 보유 기기 유형의 차이가 있음을 확인함으로써 원격수업으로 인한 불평등을 방지하기 위한 개입 지점을 제시한다는 점에서 의의가 있다.

• Journal of Electrical Engineering and Technology
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• 제7권4호
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• pp.513-523
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• 2012

For precisely regulating the speed of a permanent magnet synchronous motor system with unknown load torque disturbance and disturbance inputs, an LMI-based sliding mode control scheme is proposed in this paper. After a brief review of the PMSM mathematical model, the sliding mode control law is designed in terms of linear matrix inequalities (LMIs). By adding an extended observer which estimates the unknown load torque, the proposed speed tracking controller can guarantee a good control performance. The stability of the proposed control system is proven through the reachability condition and an approximate method to implement the chattering reduction is also presented. The proposed control algorithm is implemented by using a digital signal processor (DSP) TMS320F28335. The simulation and experimental results verify that the proposed methodology achieves a more robust performance and a faster dynamic response than the conventional linear PI control method in the presence of PMSM parameter uncertainties and unknown external noises.

• The Journal of Asian Finance, Economics and Business
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• 제7권2호
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• pp.131-141
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• 2020

This study examines the poverty indicators in Northeast region of Thailand by adopting the global Multidimensional Poverty Index (MPI) methodology and the national survey of Minimum Basic Needs (MBN) of Thailand. Data are collected from three different districts in Khon Kaen province namely: Khok Po Chai, Sam Sung, and Nam Pong. The sample size is 187 households. Data analysis uses Ordinary Least Square (OLS) regression approach and includes 7 dimensions of poverty (health, environment, education, economy, Thai value, asset? empowerment, and digital literacy) with a total of 41 indicators. This study has found that poverty indicators in Khon Kaen province remains centered around the aspects of health and employment dimensions. While a change of family structure in the Thai society since 1960s reduces the family size, household saving substantially increases over the years. The effects of health dimension in poverty, on the other hand, appears on the other poverty dimension of Thai value, which include (1) a bad living habit of head of household (smoke or alcohol consumption) that links with illness and disease, (2) religious practice, and (3) chronic illness. Lastly, there are income gaps of different careers in the area, which suggests the issue of income inequality.

• Journal of Power Electronics
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• 제16권3호
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• pp.1025-1035
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• 2016

Luenberger observer (LO)-based sensorless multi-loop control of a converter requires an iterative trial-and-error design process, considering that many parameters should be determined, and loop gains are indirectly related to the closed-loop characteristics. Robust H∞ control adopts a compact sensorless controller. The algebraic Riccati equation (ARE)-based and linear matrix inequality (LMI)-based H∞ approaches need an exhaustive procedure, particularly for a low-order controller. Therefore, in this study, a novel robust H∞ synthesis approach is proposed to design a low-order sensorless controller for boost converters, which need not solve any ARE or LMI, and to parameterize the controller by an adjustable parameter behaving like a "knob" on the closed-loop characteristics. Simulation results show the straightforward closed-loop characteristics evaluation and better dynamic performance by the proposed H∞ approach, compared with the LO-based sensorless multi-loop control. Practical experiments on a digital processor confirmed the simulation results.

• International journal of advanced smart convergence
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• 제10권2호
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• pp.168-174
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• 2021

Korea is ranked as the world's No. 1 country in its aging rate. While the interest and demand for health is rapidly increasing, the health status of the elderly is in the lowest among OECD members. Increased chronic diseases, the burden of medical costs and digital/untact changes of societies after COVID-19 have caused the direction of healthcare to be changed from treatment oriented to health care and prevention oriented, along with increased income levels and a desire for a healthy life. Amid this paradigm of change, the gap in health standards and health inequality for the elderly according to local structure and social conditions affects not only socio-economic but also the quality of life for individual senior citizen. Utilizing prior data of Aging Research Panel Survey, this study aims to compare and analyze health conditions and regional gaps which are significant influences on the satisfaction of the life of the elderly, and to suggest direction of studies for health care to provide solutions for health inequalities. The findings are intended to be a basic data for researching models of the New Normal Smart Healthcare System that bridge the health gap between the elderly and enhance life satisfaction with health care models suitable for regional characteristics in aging society.

• International journal of advanced smart convergence
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• 제10권2호
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• pp.37-44
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• 2021

At the time of entering the super-aged society, the health problem of the elderly is becoming more prominent due to the rapid digital era caused by COVID-19, but the gap between welfare budgets and welfare benefits according to regional characteristics is still not narrowed and there is a significant difference in emergency medical access. In response, this study proposes an ICT-based New Normal Smart Care System (NNSCS) to bridge the gap I n health and medical problems. This is an integrated system model that links the elderly themselves to health care, self-diagnosis, disease prediction and prevention, and emergency medical services. The purpose is to apply location-based technology and motion recognition technology under smartphones and smartwatches (wearable) environments to detect health care and risks, predict and diagnose diseases using health and medical big data, and minimize treatment latency. Through the New Normal Smart Care System (NNSCS), which links health care, prevention, and rapid emergency treatment with easy and simple access to health care for the elderly, it aims to minimize health gaps and solve health problems for the elderly.

• 한국IT서비스학회지
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• 제22권4호
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• pp.53-80
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• 2023

Expectations for artificial intelligence technology are increasing, and its utility value is growing, leading to active use in the public sector. The use of artificial intelligence technology in the public sector has a positive impact on aspects such as improving public work efficiency and service quality, enhancing transparency and reliability, and contributing to the development of technology and industries. For these reasons, major countries including Korea are actively developing and using artificial intelligence in the public sector. However, artificial intelligence also presents issues such as bias, inequality, and infringement of individuals' right to self-determination, which are evident even in its utilization in the public sector. Especially the use of artificial intelligence technology in the public sector has significant societal implications, as well as direct implications on limiting and infringing upon the rights of citizens. Therefore, careful consideration is necessary in the introduction and utilization of such technology. This paper comprehensively examines the legal issues that require consideration regarding the introduction of artificial intelligence in the public sector. Methodological discussions that can minimize the risks that may arise from artificial intelligence and maximize the utility of technology were proposed in each process and step of introduction.

• International Journal of Computer Science & Network Security
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• 제21권8호
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• pp.71-78
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• 2021

The relevance of research provides the necessity to identify the basic problems in the public governance sphere and information technology relations, forasmuch as understanding such interconnections can indicate the consequences of the development and spreading information technologies. The purpose of the research is to outline the issues of applying information technologies in public governance sphere. 500 civil servants took part in the survey (Ukraine). A two-stage study was conducted in order to obtain practical results of the research. The first stage involved collecting and analyzing the responses of civil servants on the Mentimeter online platform. In the second stage, the administrator used the SWOT-analysis system. The tendencies in using information technologies have been determined as follows: the institutional support development; creation of analytical portals for ensuring public control; level of accountability, transparency, activity of civil servants; implementation of e-government projects; changing the philosophy of electronic services development. Considering the threats and risks to the public governance system in the context of applying information technologies, the following aspects generated by societal requirements have been identified, namely: creation of the digital bureaucracy system; preservation of information and digital inequality; insufficient level of knowledge and skills in the field of digital technologies, reducing the publicity of the state and municipal governance system. Weaknesses of modern public governance in the context of IT implementation have been highlighted, namely: "digitization for digitalization"; lack of necessary legal regulation; inefficiency of electronic document management (issues caused by the imperfection of the interface of reporting interactive forms, frequent changes in the composition of indicators in reporting forms, the desire of higher authorities to solve the problem of their introduction); lack of data analysis infrastructure (due to imperfections in the organization of interaction between departments and poor capacity of information resources; lack of analytical databases), lack of necessary digital competencies for civil servants. Based on the results of SWOT-analysis, the strengths have been identified as follows: (possibility of continuous communication; constant self-learning); weaknesses (age restrictions for civil servants; insufficient acquisition of knowledge); threats (system errors in the provision of services through automation); opportunities for the introduction of IT in the public governance system (broad global trends; facilitation of the document management system). The practical significance of the research lies in providing recommendations for eliminating the problems of IT implementation in the public governance sphere outlined by civil servants..

• 한국비블리아학회지
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• 제29권4호
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• pp.113-137
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• 2018

본 연구에서는 문헌연구를 통해 저소득계층의 개념과 기준 및 유형에 관하여 살펴보고, 사례조사에 의해 저소득계층을 대상으로 한 국내 공공도서관 서비스의 현황을 파악하였다. 연구결과를 바탕으로 저소득계층에게 필요한 새로운 도서관서비스로 저소득계층의 디지털정보격차를 해소하기 위한 관련 프로그램의 시행과 저소득계층 성인 대상의 경제적 자립을 지원하는 취업 관련 프로그램 및 독서상담치료서비스의 도입을 제안하였다. 또한 저소득계층 대상 도서관서비스를 활성화시킬 수 있는 정책방안을 5가지로서 (1) 도서관법에서의 저소득계층의 개념과 기준 및 유형에 대한 명확한 규정, (2) 도서관발전종합계획에서의 저소득계층 대상 도서관서비스의 강화, (3) 국가차원의 저소득계층 및 도서관서비스에 대한 현황조사, (4) 저소득계층의 실제적인 특성 및 정보요구 파악, (5) 저소득계층의 다양한 유형별 맞춤형 도서관서비스 개발 및 운영을 제안하였다.

• 한국경제지리학회지
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• 제23권3호
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• pp.197-208
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• 2020

본 연구에서는 한국사회의 계층갈등의 지형을 규명하고 불평등의 전개양상에 대한 체계적인 분석을 통해 공감사회에 관한 틀을 마련함으로써 코로나 시대의 극복방안을 제시하고자 한다. 분석결과, 계층에 대한 객관적 차원뿐만 아니라 주관적 차원인 삶에 대한 만족도와 계층의식은 비례하며, 계층적 지위일치의 구성은 양극화를 보여준다. 왜곡된 분배구조와 사회가치에 의해 소득 및 자산격차가 심화되고 있으며 교육격차와 계층의 구조화로 사회이동의 가능성을 굴절시키고 있는 것이다. 이러한 문제는 기회균등이나 제도적 공정성만으로는 치유하기 어려우며, 문화적 가치체계에 대한 냉철한 진단과 과감한 개혁이 필요하다. 코로나 위기극복과정을 통해 과거로 회귀하는 것은 옳지 않으며 잘못된 의식과 관행을 바로 잡아 국가와 사회구성원의 정합성을 재정립해야 한다. 나이가 경제와 글로벌 및 디지털 차원의 혁신과정을 통해 국가발전보다 사회발전을 우선시하고 구성원의 삶 자체를 중시하는 뉴 노멀 시대의 대전환이 요구된다. 갈등해결의 지속성은 사회적 토대로서 공동체에 관한 연대의식에 달려 있으며, 사회구성원의 신뢰와 소통에 바탕을 두는 공감사회가 필요하기 때문이다.