• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.81-86
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• 2022

Digital technologies in the regional sector of public administration are the basis for its reform and a potential example for the whole country on how to use the benefits of the "digital" world. The synergistic potential of social, mobile, "cloud" technologies, as well as data analysis technologies and the "Internet of Things" can collectively lead to transformational changes in public administration and in general, that is, make the use of digital technologies for the economic development of the region in the system of digitalization of public administration effective, reactive and valuable. Thus, the purpose of the study is to identify modern prospects and realities of the development of digital technologies for the economic development of the region in the system of digitalization of public administration. As a result of the study, the main mechanisms and systems of digital technologies for the economic development of the region in the system of digitalization of public administration were analyzed.

• 교육녹색환경연구
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• 제9권3호
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• pp.1-11
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• 2010

In the construction industry, IT based information system has been diversely applied to increase productivity. Although IT device such as PDA, RFID, Barcode, wireless network and web camera has been introduced to gather information in construction site, the effect of the IT device is limited, because of bringing about additional works of engineer. In this paper, we proposed a defect management system which is based on handwritten document digitalization framework for introducing applicability of new IT device, digital pen. By the proposed system, we can effectively gather and input defect information to defect management system by using digital pen and paper like conventional way. Applying the data gathering device, digital pen to defect management, it is able to increase productivity by improving work process, building up and utilizing defect information database of good quality.

• Journal of Contemporary Eastern Asia
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• 제21권2호
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• pp.47-68
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• 2022

Micro, Small, and Medium Enterprises (East Java, Indonesia) are one of the businesses that drive developing nations' economies with various challenges, particularly in finance and digitalization. The impact of financial literacy and the use of digitalization can affect the recording and reporting of company performance. This is quantitative research, and the population in this research is SMEs in East Java, with 401 SMEs from various businesses for the sample used. This research uses the primary data method of SMEs in East Java with the Structural Equation Model as a data analysis tool. The results showed a significant relationship between financial literacy and financial performance, and digital literacy was based on financial performance. However, digital literacy could not moderate financial literacy with the financial performance of East Java SMEs. Much of the untapped potential in this study was adopted from financial governance and digitalization. It is hoped that the subsequent study will examine other phenomena on the variables used in the post-pandemic.

• Journal of the Korean Data and Information Science Society
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• 제16권2호
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• pp.313-325
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• 2005

In Korea, there exists a large corpus of handwritten historical documents that serve as a valuable resource. Most of them are hand-written by the King's chroniclers and secretaries. Recently, the historical archives of Lee dynasty have been digitalized. Since it is extremely difficult to utilize conventional OCR system, most of the processes have been performed manually. In this paper, we propose OCR-based digitalization system using Mahalanobis distance-based rejection and interface for eye inspection about historical Hanja documents. Compared with our previous work, experimental results show that the proposed system can help enhancing the overall efficiency of the process.

• 한국전기전자재료학회논문지
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• 제35권5호
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• pp.471-479
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• 2022

Recently, piezoelectric devices, such as ultrasonic surgery, ultrasonic atomizer, and ultrasonic speaker, are analyzed and designed by finite element simulation methods. However, the discrepancy between the design and the experiment results of the device typically occurs due to the inaccuracy of the piezoelectric material properties. To improve the simulation accuracy, the material properties of the PZT ceramics were better refined using parameter estimation method. The material parameters are elastic stiffness c^E_ij and piezoelectric constant e_ij of PZT ceramics. The impedance curve characteristics for the LTE mode of PZT ceramics were calculated. The mismatch between the simulation and the experimental data were compared and minimized by a least square method. Finally, the simulated impedance data were compared with the experimental data for the various vibration modes of PZT ceramics and the optimized material properties of PZT ceramics were verified. To further verify the accuracy, this method was also applied to piezoelectric PMN-PT single crystals.

• 한국건설관리학회논문집
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• 제6권4호
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• pp.190-198
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• 2005

본 연구의 목적은 건설프로젝트에 관련된 기술문서(technical document)를 효율적으로 저장하고 웹(web)을 통하여 신속하고 정확하게 교환할 수 있도록 전자화(digitalization)하는 방안을 제시하는 것이다. 이를 위해 본 연구에서는 먼저 전자화 측면을 고려하여 기술문서의 여러 특성을 분석하였고 이를 바탕으로 저장에는 데이터베이스(database)를, 웹을 통한 교환에는 XML을 적용하여 기술문서를 전자화할 수 있는 방안을 도출하였다. 여기에는 기술문서의 저장과 검색, 부분적인 XML문서의 작성, 기술문서에 적합한 구성항목과 구성체계 설정, 웹에서의 수식과 그래픽 처리 방안이 포함된다. 마지막에는 전형적인 기술문서 중의 하나인 구조계산서(structural design sheets)를 대상으로 하여 데이터베이스에 저장하기 위한 자료구조(data structure) 정의, 실제 XML문서의 작성 및 웹을 통한 교환 등을 부분적으로 구현하여 본 연구에서 제안한 데이터베이스와XML에 기반한 기술문서 전자화 방안의 적정성을 검토하였다.

• 대한조선학회논문집
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• 제60권2호
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• pp.95-109
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• 2023

In the 4th industrial revolution, changes in the technological paradigm have had a direct impact on the maintenance system of ships. The 2-stroke low speed engine system integrates with the core equipment required for propulsive power. The Condition Based Management (CBM) is defined as a technology that predictive maintenance methods in existing calender-based or running time based maintenance systems by monitoring the condition of machinery and diagnosis/prognosis failures. In this study, we have established a framework for CBM technology development on our own, and are engaged in engineering-based failure analysis, data development and management, data feature analysis and pre-processing, and verified the reliability of failure mode DB using LSTM algorithms. We developed various simulated failure mode scenarios for 2-stroke low speed engine and researched to produce data on onshore basis test_beds. The analysis and pre-processing of normal and abnormal status data acquired through failure mode simulation experiment used various Exploratory Data Analysis (EDA) techniques to feature extract not only data on the performance and efficiency of 2-stroke low speed engine but also key feature data using multivariate statistical analysis. In addition, by developing an LSTM classification algorithm, we tried to verify the reliability of various failure mode data with time-series characteristics.

• 센서학회지
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• 제31권5호
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• pp.318-323
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• 2022

Barium titanate (BaTiO₃) is considered to be a beneficial ceramic material for multilayer ceramic capacitor (MLCC) applications because of its high dielectric constant and low dielectric loss. Numerous attempts have been made to improve the physical properties of BaTiO₃ in response to recent market trends by employing multicomponent alloying strategies. However, owing to its significant number of atomic combinations and unpredictable physical properties, finding a traditional experimental approach to develop multicomponent systems is difficult; the development of such systems is also time-consuming. In this study, 168 new structures were fabricated using special quasi-random structures (SQSs) of Ba_1-xCa_xTi_1-yZryO₃, and 1680 physical properties were extracted from first-principles calculations. In addition, we built an integrated database to manage the computational results, and will provide big data solutions by performing data analysis combined with AI modeling. We believe that our research will enable the global materials market to realize digital transformation through datalization and intelligence of the material development process.

• 해양환경안전학회지
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• 제27권3호
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• pp.429-438
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• 2021

The mandatory installation of the ECDIS (Electronic Chart Display and Information System) became an important navigational equipment for navigation officer. In addition, ECDIS is a key component of the ship's digitalization in conjunction with various navigational equipment. Meanwhile, cyber-attacks emerge as a new threat along with digitalization. Damage caused by cyber-attacks is also reported in the shipping sector, and IMO recommends that cybersecurity guidelines be developed and included in International Security Management (ISM). This study analyzed the cybersecurity hazards of ECDIS, where various navigational equipment are connected. To this end, Importance-Performance Analysis (IPA) was conducted on navigation officer using ECDIS. As a result, the development of technologies for cyber-attack detection and prevention should be priority. In addition, policies related to 'Hardware and Software upgrade', 'network access control', and 'data backup and recovery' were analyzed as contents to be maintained. This paper is significant in deriving risk factors from the perspective of ECDIS users and analyzing their priorities, and it is necessary to analyze various cyber-attacks that may occur on ships in the future.

• 한국기록관리학회지
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• 제19권3호
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• pp.123-153
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• 2019

본 연구는 무형문화유산 기록정보자원을 디지털화한 결과의 품질을 평가하기 위한 평가요소와 항목을 개발하고, 이를 실제 디지털화 사례에 적용함으로써 그 유용성을 검증하는데 목적이 있다. 이에 본 연구에서는 기록정보자원의 디지털화 관련 지침과 국가기록원 표준, 선행연구와 함께 국립무형유산원과 유네스코아태무형유산센터의 디지털화 사례를 분석하여 평가영역과 요소를 도출하였다. 이후 개발된 평가요소 및 항목의 중요도를 선정하기 위해 무형문화유산 관련 기관의 실무자와 디지털화 업무 담당자를 대상으로 설문조사를 진행하였으며, 선정된 중요도를 바탕으로 배점 체계를 설정하였다. 나아가 이를 디지털화가 완료된 무형문화유산 기록정보자원 사례에 실제 적용하여 파일럿 평가를 진행하였으며, 평가 결과를 검증하기 위해 FGI(Focus Group Interview)를 실시하였다. 본 연구에서 개발한 평가요소 및 항목을 통해 기관에서 디지털화 시 미흡했던 부분들을 객관화 수치화하여 한눈에 파악할 수 있고, 이는 추후 실무자들이 기초자료로 활용할 수 있을 것으로 기대된다.