Improvement of Clothing Structure Design and Wearing Comfort Based on Jacobi Matrix Optimization Algorithm

As the main driving force for the digital transformation of the construction industry, the uncertainty of digital technology in the application process has seriously hindered the high-quality development of the construction industry. In order to promote the wide application of digital technology in the construction industry and clarify the key uncertainties in its application process, this paper identifies the uncertainty index system of digital technology application based on the LDA topic model and literature analysis; the DEMATEL-ISM method is used to construct the multilevel hierarchical structure model of the uncertainty indicators in the application of digital technology to study the mutual influence among the indicators and to find the key uncertainty indicators. The research results show that the uncertainty indicators of the application of digital technology in the construction industry are divided into five levels: policy, industry, personnel, economy and law, and that the perfection of the policy guarantee system is the key uncertainty indicator for the investment return period of digital technology application. The standard contract model for digital technology is a direct uncertainty indicator for the application of digital technology in the construction industry. The results of this study help researchers and practitioners to focus on the key barriers and provide a list of key elements for construction companies to promote the application of next-generation digital technologies to improve digitalization of the construction industry. This study also provides a policy reference to further promote the digital transformation of the construction industry.

This work presents different proposals to deal with common problems in robot visual servoing based on the application of discontinuous control methods. The feasibility and effectiveness of the proposed approaches are substantiated by simulation results and real experiments using a 6R industrial manipulator. The main contributions are:\n\n- Geometric invariance using sliding mode control (Chapter 3): the defined higher-order invariance is used by the proposed approaches to tackle problems in visual servoing. Proofs of invariance condition are presented.\n\n- Fulfillment of constraints in visual servoing (Chapter 4): the proposal uses sliding mode methods to satisfy mechanical and visual constraints in visual servoing, while a secondary task is considered to properly track the target object. The main advantages of the proposed approach are: low computational cost, robustness and fully utilization of the allowed space for the constraints.\n\n- Robust auto tool change for industrial robots using visual servoing (Chapter 4): visual servoing and the proposed method for constraints fulfillment are applied to an automated solution for tool changing in industrial robots. The robustness of the proposed method is due to the control law of the visual servoing, which uses the information acquired by the vision system to close a feedback control loop. Furthermore, sliding mode control is simultaneously used in a prioritized level to satisfy the aforementioned constraints. Thus, the global control accurately places the tool in the warehouse, but satisfying the robot constraints.\n\n- Sliding mode controller for reference tracking (Chapter 5): an approach based on sliding mode control is proposed for reference tracking in robot visual servoing using industrial robot manipulators. The novelty of the proposal is the introduction of a sliding mode controller that uses a high-order discontinuous control signal, i.e., joint accelerations or joint jerks, in order to obtain a smoother behavior and ensure the robot system stability, which is demonstrated with a theoretical proof.\n\n- PWM and PFM for visual servoing in fully decoupled approaches (Chapter 6): discontinuous control based on pulse width and pulse frequency modulation is proposed for fully decoupled position based visual servoing approaches, in order to get the same convergence time for camera translation and rotation.\n\nMoreover, other results obtained in visual servoing applications are also described.

In the digital age, China’s economic development is transitioning from high speed to high quality. Through the application of digital technology, China’s manufacturing industry is moving toward more environmentally friendly and sustainable innovation, which makes it of great significance to study the effect of green investment and big data on innovation. Grounded in strategic management theory, this paper examines the interplay between CEO big data orientation, environmental investment, and their joint impact on technological innovation in manufacturing enterprises. Data are extracted from annual reports of listed Chinese manufacturing companies using computer-assisted text analysis methods and evaluated with negative binomial regression. The results indicate an inverted U-shaped relationship between CEO big data orientation and technological innovation. The results further explain that as CEO big data orientation increases, enterprises with higher levels of green investment will reach the peak of technological innovation performance earlier. According to China’s intelligent manufacturing in 2035, we have proposed some methods and suggestions for green investment and big data applications.

This paper presents a review of characteristics of the two main visual servoing methods: image-based visual servoing and position-based visual servoing. First, a generic structure is defined with an emphasis on the same system inputs and outputs for the two methods. The stability, robustness, sensitivity, and other general characteristics of the methods are presented. To overcome the dependency of both methods on a known target model, a midpoint triangulation method is proposed to estimate the unknown target model for robot visual servoing.

Visual servoing provides the flexibility of robot control in dynamic environments, but three-dimensional (3-D) robot visual servoing is challenging due to the 2-D nature of the image space. Adaptive homography-based visual servoing (HBVS) is effective for 3-D robot pose control under various parametric uncertainties, but the robot dynamics is seldom considered under uncalibrated camera parameters. This paper proposes a dynamics-based adaptive HBVS method for 3-D pose tracking of robot manipulators using an eye-to-hand monocular camera with unknown extrinsic parameters, where a composite learning law is designed to achieve parameter convergence without the stringent persistent excitation condition. Compared with existing adaptive HBVS methods, the proposed method accounts for robot dynamics in the control design to enhance control performance, calibrates extrinsic parameters online under a weak condition of interval excitation, and does not require measuring the rotation of a reference plane or finding valid vanishing points. Experiments on an articulated robot with 7 degrees of freedom, named Franka Emika Panda, have verified that the proposed method performs well for both camera extrinsic online calibration and robot 3-D pose tracking.

With the development and application of digital twin technology, the problem of privacy leakage is becoming increasingly prominent. Privacy leakage issues caused by data abuse and weak awareness have attracted high attention. In this regard, this paper analyzes the causes of privacy leakage in the digital twin, analyzes the difficulties of privacy protection under the background of the digital twin, and puts forward the “legal co-governance model.” Through multi-party cooperation, improving the system, and improving literacy, people can effectively protect private information, ensure the security application of technology, law, and ethics, and provide a guarantee for the sustainable development and social application of digital twin technology.

Development and application of digital twin technology for integrated regional energy systems in smart cities

In the urbanization process, attaching great importance to urban development and how to coordinate the relationship between the historical and cultural heritage protection is already new scientific ideas and urgent duties. With the development of digital technology, the degree of development of historical and cultural heritage has become an important indicator in the evaluation of a national information infrastructure. This paper discusses the application of digital surveying, digital restoration, digital recording, digital protection and other digital technology in heritage protection.

With the rapid development of digital technology, its application in dental restoration becomes wider and the standard for the dental diagnosis and treatment becomes higher. Thanks to the progress of computer-aided design and manufacturing technology, a new digital era has come, where efficient, accurate and personalized treatment experience could be achieved in every treatment step of fixed prostheses, and the traditional mode with low efficiency and poor patient experience has been replaced. This article is to discuss the application status of digital technology in detail, including its advantages, limitations and future development. Key words: Prosthodontics; Dental, digital; Computer-aided design; Computer-aided manufacturing

The majority of sectors are currently influenced by digital technology, including the education sector. Through the development of digital technology, a new learning model can be designed, namely hybrid learning. Hybrid learning can help the learning process, such as providing variations in learning, minimizing space and time limitations, and improving digital skills. Hybrid learning is a solution in higher education that has limited learning space but has facilities for implementing digital technology in hybrid learning. The research subjects were 36 students of educational informatics engineering department. The research method used was research and development, with ADDIE model (Analysis, Design, Develop, Implementation, and Evaluation). At the implementation stage, an effectiveness test was carried out to see the extent to which the application of digital technology in hybrid learning had an effect on the learning process. The research’s results were the implementation of digital hybrid learning technology which consists of combination face-to-face classes with e-learning moodle. Another result from this research was the value of effectiveness was obtained, which is 86.44% conducted from 36 subjects and was categorized as very effective for implementation in higher educational level.

The application of digital technology in the field of construction is still in its infancy, and the existing concrete framework of digital technology application in the construction industry and the study of applied ecological elements are not enough. The ecological elements of digital technology application in the construction industry are important factors that promote the healthy operation of the entire digital technology application ecosystem. Using grounded theory, we compiled the data of 33 researchers who participated in semi-structured interviews, and obtained 4 main categories and 9 sub-categories of ecological elements of digital technology application in the construction industry. Among them, the digital technology application mechanism is the core category of ecological application elements. We also used the Bass model to analyze the application trend of digital technology in the construction industry. In 2040, the number of construction companies applying digital technology will reach 98.66% of the maximum market potential.

Challenges and applications of digital technology in the mineral industry

Asset management of oil and gas pipeline system Based on Digital Twin

The current policy of the Conversion of New and Old Kinetic Energy in China. The vigorous development of the computer image recognition technology, as well as the growing diversity of the clothing demand, make the development of digital printing technology more and more urgent. Based on digital image processing, computer image recognition, fractal algorithm and ICC color management illustrates the principle of digital printing and technical advantages. The application of digital printing technology in design elements such as pattern, color, fabric and style is analyzed. And the future development trend of digital printing technology is forecasted.

Nowadays, with the advancement of technology, software designed to provide perfect security for information in every field is emerging. Blockchain has also become a crucial component in such software, safeguarding information across various sectors. Blockchain technology represents one of the rapidly evolving methods for organizing and storing data online. Data is stored in blocks, and when enough blocks are connected, they form a chain, creating a blockchain. Additionally, the use of blockchain technology enhances the security of data on the network. This technology finds applications in various sectors, including media and telecom, energy and utilities, finance, healthcare, and basic industrial sectors. Notably, the fashion industry is also among the sectors benefiting from blockchain, primarily due to its transparency, a key factor given the increasing importance of sustainability.However, transparency is just one aspect of blockchain technology. It encompasses other essential features such as enhanced security, instant monitoring, increased efficiency and speed, and automation. Today, major players in the fashion industry, including LVMH, Nike, Zara, and textile-producing countries, employ blockchain technology. Blockchain facilitates the examination and recording of many issues, including supply chain management, product preparation, and fair labor practices. Luxury fashion companies, in particular, use blockchain to record product certificates, preventing the production of counterfeit models and ensuring the authenticity of their products.In this context, this study aims to reveal the perspectives of textile and fashion companies regarding blockchain, a topic with limited academic sources. As a case study, the research focuses on investigating the application of blockchain in the Turkish textile and fashion design industries. The research involves interviews with Turkish fashion designers and managers from textile companies, aiming to understand how and why businesses might potentially integrate blockchain internally. Although most interviewees stated that their companies currently lack active blockchain applications, they expressed their intention and progress toward incorporating blockchain in the near future.While blockchain is used worldwide, it is observed that Turkish fashion designers and the textile sector employ it for specific applications, and there is limited available information about Turkey. This study aims to bridge the knowledge gap by providing insights into how and why blockchain can be utilized in the Turkish fashion and textile sector, drawing from the data gathered through extensive research and interviews.