Modal Analysis is the process of characterizing the dynamic properties of an elastic structure by identifying its modes of vibration. A mode of vibration is a global property of an elastic structure. That is, a mode has a specific natural frequency and damping factor which can be identified from response data at practically any point on a structure, and it has a characteristic mode shape which identifies the mode spatially over the entire structure. Modal testing is able to be performed on structural and mechanical structure in an effort to learn more about their elastic behavior. Once the dynamic properties of a structure are known its behavior can be predicted and therefore controlled or corrected. Resonant frequencies, damping factors and mode shape data can be used directly by a mechanical designer to pin point weak spots in a structure design, or this data can also be used to confirm or synthesize equations of motion for the elastic structure. These differential equations can be used to simulate structural response to know input forces and to examine the effects of pertubations in the distributed mass, stiffness and damping properties of the structure in more detail. In this paper the measurement of transfer functions in digital form, and the application of digital parameter identification techniques to identify modal parameters from the measured transfer function data are discussed. It is first shown that the transfer matrix, which is a complete dynamic model of an elastic plate structure can be written in terms of the structural modes of vibration. This special mathematical form allows one to identify the complete dynamics of the structure from a much reduced set of test data, and is the essence of the modal approach to identifying the dynamics of a structure. Finally, the application of transfer function models and identification techniques for obtaining modal parameters from the transfer function data are discussed. Characteristics on vibration response of elastic plate structure obtained from the dynamic analysis by Finite Element Method are compared with results of modal analysis.

The paper presents a digital speed control approach of induction motor systems by using a digital redesign method and adopting a well known 2nd order model as the system model equation. The basic concept using the modeling equation is induced from the control theory stand point such that we can describe usually the motor system connected by inverter, generator and load etc. just as a mechanical system to be controlled. The concept does not demand us the complicated vector-based modeling equation adopted in the traditional methods for the speed control of induction motor. The effectiveness of the servo control system composed by the above mentioned design concept is illustrated by the experimental results in the presence of step reference change and generator load variation. It is observed from the experimental results that the steady state error of the experimental set up becomes zero after some regulation time and the induction motor system is robust in spite of reference signal change and load variation of generator.

이상과 같이 엑튜에이터의 동특성 해석을 행하고 PID 제어기 및 최적 제어기를 설계하여 응답시뮬레이션을 한 결과 다음과 같은 결론을 얻었다. 1) 엑튜에이터 부의 시정수는 엔진 부의 시정수에 비해 아주 작아 생략하여 제어계를 구성할 수 있다. 2) 한계 감도법에 의해 PID 제어기를 시뮬레이션 한 결과 PID 제어 가버너는 전반적으로 오버슈트가 크고 중속 및 고속 상태에서는 정정시간이 비교적 짧지만 저속에서는 정상 상태에 도달하는데 상당한 시간이 걸린다. 3) 중량 matrix를 적당히 선택하여 최적 피이드 백 게인을 구한 후 마이크로 프로세서에 저장하여 제어기를 구성하면 PID 제어기 보다 양호한 응답 특성을 갖는 제어기를 설계 할 수 있다.

A scheme for installing the digital printing devices as an additional output system of photoelectric photometry is discussed. The digital printing devices consist of counter/integrator and printer interfaces for the digital printer HP 5055A. The integration gate time could be adjusted from 1 second to 99 seconds.

With the wave of digital economy sweeping the world, artificial intelligence, blockchain, cloud computing, 5G, ChatGPT and other information technologies are developing rapidly. All walks of life are undergoing changes, and people’s thinking, cognition, life, study, and work are changing accordingly. Both developed and developing countries are also facing new situations and challenges in politics, economy, science and technology, culture, and education. It can be said that digitalization itself and its impacts are related to the development of the future world and affect every citizen of the earth. Digital literacy and skills derived from digitalization have gradually become the focus of attention from all walks of life. In terms of college students’ digital literacy and digital literacy skills, it mainly refers to the digital ability that college students should have and use in study, employment, and future work under the background of informatization and digitalization. Although digital literacy and digital literacy skills have been paid more and more attention by the international community and schools, there is no unified definition of digital literacy and digital literacy skills by various countries and international organizations, and there are some differences in the use of this concept by countries and regions. From the perspective of enterprises’ demand for digital talents, this paper puts forward some suggestions on the training and improvement of college students’ digital literacy skills.

Big data, artificial intelligence and other cutting-edge technologies are gradually integrated with the real economy, promoting modern society to the development stage of digital economy, and the emergence and development of new industrial trends will inevitably suffer from realistic challenges, at this time, it is necessary to respond to the challenges in a targeted manner.Based on this, this paper analyzes the realistic challenges of the digital transformation of the sports industry, and on the basis of clarifying the existing challenges and difficulties, puts forward the promotion strategy of the digital transformation of the sports industry from multiple perspectives for reference.

The current domestic gaming market is flourishing, with a multitude of games centered around or incorporating elements of traditional culture. Notably, exceptional cases such as “Black Myth: Wukong” have even succeeded in exporting culture overseas. However, beneath this prosperity lie certain challenges. Most games that revolve around traditional culture suffer from certain gaps and lack subsequent work. Only a few manage to evolve into series. This paper primarily explores the feasibility and advantages of the IP economic model in propagating traditional culture through digital games, aiming to uncover novel strategies for disseminating traditional culture in the digital gaming realm.

The development of the Internet and digital technology has given rise to a new form of cultural industry - digital literacy, and the trend of all-media convergence has also promoted the production and marketing of IP, and the space for the development of digital literacy under the IP strategy and the market demand are constantly expanding. Due to the problems of insufficient exploitation and utilisation, low technology level, content homogenisation and serious piracy of China's IPs, the feasible paths of building a digital cultural and creative industry chain, all-media marketing, establishing a digital copyright protection system, guiding the orderly competition of IPs, and carrying out international cooperation have been put forward with the combination of theories and practices, to improve the efficiency of IP production, content quality and digitalisation, stimulate the innovation of content and science and technology, protect digital copyrights, and provide a better service for China's high-quality digital copyright production and marketing. Protection of digital copyright, and provide a reference for the creation of high-quality digital cultural and creative IP in China.

국제무역에서 디지털화는 새로운 시장과 고객에 대한 접근을 촉진하고 국경 간 거래를 활발하게 하며, 거래 참여 비용을 절감하는 등 다양한 이점을 가진다는 점에 의의가 있다. 디지털 무역의 시대가 오면 서 과거의 전통적인 금융 리스크와는 다른 양상을 보이기 시작했다. 중국에서는 비부금(備付金) 리스 크, 자금 남용 리스크, 자본 유동성 리스크가 나타나고 있으며, 이에 대한 관리 방법으로 비부금(備付 金)을 중앙에서 관리하고, 은행 감독 수준을 제고하며, 정부 신용제도 개선을 고안했다. 한국에서는 디 지털 권리침해 리스크, 상품의 하자, 배송지연 및 미배송, 판매자의 계약 위반에 대한 구제거부 등 구매 자의 리스크와 제품의 불량 혹은 파손, 오배송 및 배송지연 등에 따른 구매자의 환불 및 교환 요구, 블 랙컨슈머 등 판매자의 리스크가 존재한다. 이를 해결하기 위한 방법으로는 협력체계 구축, 오픈마켓의 분쟁 해결 서비스, 신용카드 차지백 서비스 활용, 판매자 약관의 확인, 거래 프로세스의 개선, 거래 관 련 증빙 확보, 블랙컨슈머 리스트 공유를 제시했다. 급변하는 국제무역 체계를 따라잡기 위해서는 정부 의 노력이 있어야만 한다. 디지털 무역에 대한 모니터링을 지속하고, 변화에 맞춰 즉각 대응할 수 있도 록 체계적인 시스템 구축이 필요할 것으로 보인다. 디지털 무역의 성장이 급속하게 일어난 만큼 아직 디 지털 무역의 리스크 및 리스크 관리에 대해서 규범과 체계가 상대적으로 미비한 실정이다. 디지털 경제 강국이 되기 위해서는 글로벌 쟁점에 관심을 가지고 국가 간의 협력이 활발하게 이루어져야 한다고 본 다.

Analyzing and comparing the digital trade rules of free trade zones such as the European Union (EU) and North America is significant for the localization of China’s digital trade rule system. In this paper, the significance of digital trade rules is demonstrated by analyzing and comparing the characteristics of digital trade rules in each regional agreement. Through analysis of the digital trade rules of each region, it is proposed that the construction of digital trade rules in China needs to be based on promoting the development of digital economy, strengthening the protection of digital security and improving data crossborder circulation rules.

The art field of contemporary society is developing rapidly, and digital media is developing at a high speed. The installation art, which is rooted in contemporary art, has gradually become an important art form of new media art with its unique conceptual, experimental, on-site and interactive nature. In the late 20th century, the media scene has become more diversified with the development of science and technology, and the creation form and content of installation art have been more fully developed, and once became the patent of avant-garde fashion designers. On this basis, with the help of outdoor art behavior, the article makes an in-depth exploration and research on the integration and development of digital media technology and installation art.

The recent introduction of numerous outstanding tabletop games from Europe and America, coupled with the thriving domestic tabletop game crowdfunding platforms, highlights the huge potential of the board game market in China. Additionally, studies have demonstrated that board games not only provide leisure and entertainment, but also have a positive impact on children’s education, corporate management, and the medical field. However, the Chinese board game industry is facing certain challenges in the digital age. The lack of excellent domestic board game works, designers, and brands are hindering its development. This paper examines the Chinese tabletop game brands from a digital perspective and offers suggestions for the building of strong Chinese board game brands.

Under the current wave of digital marketing, profound changes are taking place in the e-commerce marketing model in various industries. The basis of rural revitalization is the development of rural industries. Aiming at the advantages of quick and convenient, networking, low cost and no time and space limitation of electric business, which can effectively carry out the integration of online and offline resources, in the context of rural revitalization, with the help of rural electric business as an important means, through online sales channels, revitalize the circulation of agricultural products and improve the enthusiasm of farmers’ participation, so as to realize the construction of a new rural good life. Therefore, rural e-commerce as a new opportunity for rural industrial development has injected new vitality and provided endogenous power for rural revitalization. There are also many problems that require in-depth analysis and research.

In recent years, with the development of economic globalization and the promotion of modern media technology, cultural enterprises such as publishing, entertainment and new media have sprung up like mushrooms after a rain and made significant contributions to economic growth, which not only increased China's financial revenue, but also promoted product export and improved its international image. Although the digital cultural trade of Chinese enterprises started relatively late, it has already formed a certain scale and has a good development prospect in the international development and cooperative operation. Since the signing of the cooperation agreement between China and South Korea in June 2015, it has largely promoted the development of enterprises’ digital cultural trade. By comparing the digital development of cultural trade between Chinese and Korean enterprises, this paper points out the current problems faced by Chinese enterprises in the internationalization development, and gives practical suggestions.

With the rapid development of the digital economy in countries around the world, international trade has entered a new period of development. In order to effectively improve the governance capabilities of the digital economy and better adapt to the development trend of the global digital economy, countries have put their participation in various international economic and trade agreements on the important agenda. As friendly neighbors, China and South Korea have a long history of trade. In the context of the in-depth advancement of digital trade development by countries around the world, aligning with high-standard international economic and trade rules has become the focus of the development of digital trade between China and South Korea. This research starts with the aspects of business and trade facilitation, data flow and personal information protection, emerging trends and technologies, and expounds the content of DEPA, the first international digital trade agreement, and shows that joining DEPA will affect China and South Korea. The main impact of digital trade is specifically reflected in the choice of flexible digital trade participation models, the implementation of efficient and feasible digital trade system specifications, the breaking of traditional digital trade monopolies in major countries, and the provision of important opportunities for global digital trade layout. Finally, the prospects of China and South Korea after joining DEPA are prospected, pointing out continuous efforts to achieve the docking of technology and international standards, establish a more complete system-level guarantee, and strengthen industry selfdiscipline and cooperation among private entities. The above discussion aims to take the entry of DEPA as an entry point and provide a useful reference and reference for the healthy development of digital trade between China and South Korea in the future.

본 연구의 목적은 고도 디지털 기반 초연결사회를 살아가는 초‧중학생의 디지털 시민성을 측정 하기 위한 디지털 시민성 측정 도구를 개발하여 타당화하는 데 있다. 이를 위해 본 연구에서는 디지털 시민성 측정 도구 관련 선행연구를 분석하여 척도개발에 적합한 문항을 구성한 후 2회의 델파이 조사를 통해 문항 38개를 선정하였다. 그다음 서울, 경기지역 초등학교 5학년∼중학교 3학년 학생을 대상으로 예비검사를 온라인 조사로 실시해 취합된 386명의 자료를 가지고 탐색적 요인분석을 실시하였다. 분석결과 29개 문항, 6개 요인(디지털 보안, 공감, 사회적 책임, 디지털 자아정체감, 디지털 사회이해, 비판적 사고)으로 구성된 디지털 시민성 측정 도구가 도출되었다. 본 검사를 통해 취합된 417명을 대상으로 확인적 요인분석을 통해 적합도 검증을 한 결과, 모두 권장수준 이상으로 나타나 디지털 시민성을 측정하는 도구로 적합하다는 것을 확인하였다. 신뢰도를 확인한 결과 .92이며, 요인별로는 .70∼.89로 안정적인 척도임을 입증하였다. 준거 관련 타당도 분석결과, 본 척도와 청소년 디지털 시민성 도구가 유의한 상관을 보였다. 이러한 결과는 초등학교와 중학교 학생에게 활용 가능한 타당하고 신뢰성 있는 도구임을 시사해 주고 있다. 본 연구는 청소년의 디지 털 시민성 교육 및 환경조성을 위한 기초연구 자료로 활용될 수 있을 것이다.

In order to improve the social service level of museums, digital media and artificial intelligence have become common application technologies in the field of Museum exhibition. The functional orientation of museums is constantly adjusted with the changes of technological development trend, cultural trend and lifestyle in modern society. The development of mobile Internet and intelligent technology has profoundly subverted people’s way of life. Digital exhibition is rising in line with people’s living habits of obtaining information and social communication. However, from the perspective of the relationship between digital exhibition and audience, there are obvious deficiencies in the research field of digital exhibition activities in the field of functional orientation and meaning innovation. Therefore, this paper attempts to explore the function, narrative and meaning of digital exhibition from the perspective of the audience with the concept of “post Museum” and through the analysis of classic cases in the field of digital exhibition. The purpose of this study is to analyze the function and meaning of digital exhibition from the perspective of the audience, clarify the path of the future development of the museum, and explore the narrative structure of exhibition language in the digital context. The research results will provide new theoretical support and design strategies for future museum exhibition design.

본 연구는 디지털 전환이 가속화되는 점을 가정한 상황에서 미래 학교교육의 모습을 시나리오 기법을 통하여 예측하고 있다. 본 연구에서 활용된 시나리오 기법은 확률론적 수정 경향 (probabilistic modified trends : PMT)’의 경향성 영향 분석(trend impact analysis : TIA)의 방법론의 틀을 준용하면서, 빅데이터 분석 및 전문가 검토 등을 활용하여 미래 시나리오를 도출하였다. 빅데이터 분석을 위해 미래 학교교육과 관련이 있는 1,139건의 논문과 457건의 칼럼 및 기고문 등을 수집하였고, 각 문서의 형태소를 추출하여 총 740,543개의 형태소를 통해 각 문서를 벡터 공간에 위치시켰으며 문서 간의 거리 측정을 통하여 군집분석 프로파일링 실시 후, 각 분야별 전문가를 섭외하고 협의회를 거쳐 최종 시나리오를 도출하였다. 본 연구에서 조합이 가능한 시나리오는 총 27가지였으며, 이 가운데 전문가 검토를 거쳐 최종 세 종류의 시나리오를 도출하였다. 세 종류의 시나리오를 종합한 주요 연구결과는 다음과 같다. 첫째, 디지털 전환이 가속화되는 미래 학교교육에서 교사는 ‘학습자들의 다원화된 학습경험의 촉진자’ 역할을 수행하게 될 것으로 예견된다. 둘째, 미래 학교는 오늘날의 학교와 달리 지역의 ‘학습허브센터’로서 역할을 수행하게 될 것으로 예견된다. 셋째, 미래의 학교에서 교육 운영체제는 학습자들의 ‘학습역량 이력’이 보다 중요해 질 것으로 예측되었다. 이상의 연구 결과와 함께 추후 연구에서 고려해야 할 사항도 함께 제시하였다.

디지털 경제의 급속한 발전으로 전통적인 과세제도가 새로운 경제 형태인 디지털경제에 더 이상 적용 할 수 없게 한다. 디지털 경제 발전에 걸맞은 조세제도를 적극적으로 구축하는 것은 오늘날 사회에서 직면해야 할 과제다. 본 연구는 먼저 디지털 경제의 정의와 특징 및 디지털세에 대해 기술하였다. 디지털경제가 중국의 경제·사회에 가져온 새로운 변화를 착안점으로 납세 주체의 감독, 과세 대상의 확정, 과세지의 결정 등 현행 조세제도에 대한 디지털 경제의 도전을 체계적으로 분석했다. 이와 함께 디지털 경제에 따른 과세 문제가 경제사회 발전의 효율성과 공정성에 미치는 부정적 영향도 살펴보았다. 시장 메커니즘의 왜곡, 재정수입의 손실, 조세권 배분의 불공평 및 조세부담의 불균형 등 문제를 포함한다. 그 다음 관련 국제기구 및 국가들의 디지털 경제 조세 도전에 대한 대응책을 정리했다. OECD는 국제 조세 제도의 개편을 촉진하기 위한 Two-Pillar 계획, UN이 이중과세방지 협약에 신설하는 제12B 조항, EU가 역내 조세규칙 조정을 추진하는 방안 그리고 미국이 국내 조세제도 개혁을 추진하는 방안 등이다. 마지막으로 본 연구는 디지털 경제에 따른 과세 도전에 대한 국제적 대응방안과 중국 조세정책의 문제점을 기초하여 조세제도, 세금 징수·관리 능력, 국제적 조세 협력의 세 가지 측면에서 디지털경제에 걸맞은 조세제도를 보완하는 대책을 제안했다.

The purpose of this study is to analyze the level of science and technology development and digital readiness of scientific research institutes based on the author’s assessment methodology (a set of evaluations and multifactorial indicators). Keeping with the previous literature, the research is caused by the novelty of the problem, which suggests dividing the literature review into two main research groups: theoretical background, which concentrates on the digital readiness definition, and the impact of digital readiness on science. Moreover, the scientific significance lies in the fact that proposed ideas in the research, developed theoretical and methodological provisions can significantly enrich theories related to the identification of the digital readiness of science and its consumers. Further, the research is devoted to the development of assessment methods of digital changes and analysis of the level of development of digital readiness of scientific research institutes, which is based on the author’s assessment methodology (a set of evaluations and multifactorial indicators). The methodology provides an opportunity to build ratings of the digital readiness of scientific-research institutes to the formation and development of a digital economy. Obtained results show that the priority task in the current and the future period is to increase the authority and recognition of scientific organizations, the quality of scientific research, and the formation of demand for scientific products.