CAD Applications Research Articles

Application of CAD and Big Data Technology in Fabric Matching and Selection

Application of CAD and Big Data Technology in Fabric Matching and Selection

AI-Powered CAD Application on Emotional Interaction and Value Analysis of Cluster Enterprises With Human Resource Behavior

AI-Powered CAD Application on Emotional Interaction and Value Analysis of Cluster Enterprises With Human Resource Behavior

Revolutionizing Biomass Processing: The Design and Functionality of an Innovative Extruder for Sugarcane Bagasse Milling Pretreatment

Milling pretreatment is a crucial step in the bioconversion of lignocellulosic biomass such sugarcane bagasse because it facilitates access to cellulose for subsequent chemical treatments. However, most experiments have been conducted at the laboratory scale, where it has been identified that high energy is required for the processing of biomass. For this reason, it is proposed to implement the screw extruder technique for the processing of cellulose. This article focuses on the characteristics, types, and applications of milling pretreatment for sugarcane bagasse, with a particular emphasis on its role in lignin removal and the milling design. Milling pretreatment reduces the particle size of lignocellulose biomass through compression shear and tearing mechanisms, which enhances the accessibility of cellulose and hemicellulose to enzymes and chemicals, thereby improving the efficiency of bioconversion processes. Innovative mathematical modeling, a mechanical design in a CAD application, and an FEA analysis of the milling pretreatment equipment are presented, providing insights into the design and optimization of milling pretreatment processes. This article presents an innovative potential system for milling pretreatment in sugarcane bagasse for the production of bioethanol, heat and power, and other value-added products, contributing to a more sustainable and circular economy.

Innovative Application and Effect Evaluation of CAD and Deep Learning in Brand Packaging Design

Innovative Application and Effect Evaluation of CAD and Deep Learning in Brand Packaging Design

Optimization of CAD Application in Tourism Landscape Planning with Deep Learning

Optimization of CAD Application in Tourism Landscape Planning with Deep Learning

Integration and Application of CAD and Reinforcement Learning in Advertising Art Design

Integration and Application of CAD and Reinforcement Learning in Advertising Art Design

Intelligent Collaborative Application of Fuzzy Neural Network and CAD in Green Architectural Design

Intelligent Collaborative Application of Fuzzy Neural Network and CAD in Green Architectural Design

The Application of CAD Combined Deep Learning Algorithms in Advertising Creative Design

The Application of CAD Combined Deep Learning Algorithms in Advertising Creative Design

Application of computer-aided detection for NCCN-based follow-up recommendation in subsolid nodules: Effect on inter-observer agreement.

Computer-aided detection (CAD) of pulmonary nodules reduces the impact of observer variability, improving the reliability and reproducibility of nodule assessments in clinical practice. Therefore, this study aimed to assess the impact of CAD on inter-observer agreement in the follow-up management of subsolid nodules. A dataset comprising 60 subsolid nodule cases was constructed based on the National Cancer Center lung cancer screening data. Five observers independently assessed all low-dose computed tomography scans and assigned follow-up management strategies to each case according to the National Comprehensive Cancer Network (NCCN) guidelines, using both manual measurements and CAD assistance. The linearly weighted Cohen's kappa test was used to measure agreement between paired observers. Agreement among multiple observers was evaluated using the Fleiss kappa statistic. The agreement of the five observers for NCCN follow-up management categorization was moderate when measured manually, with a Fleiss kappa score of 0.437. Utilizing CAD led to a notable enhancement in agreement, achieving a substantial consensus with a Fleiss kappa value of 0.623. After using CAD, the proportion of major and substantial management discrepancies decreased from 27.5% to 15.8% and 4.8% to 1.5%, respectively (p < 0.01). In 23 lung cancer cases presenting as part-solid nodules, CAD significantly elevates the average sensitivity in detecting lung cancer cases presenting as part-solid nodules (overall sensitivity, 82.6% vs. 92.2%; p < 0.05). The application of CAD significantly improves inter-observer agreement in the follow-up management strategy for subsolid nodules. It also demonstrates the potential to reduce substantial management discrepancies and increase detection sensitivity in lung cancer cases presenting as part-solid nodules.

CircuitNet: An Open-Source Dataset for Machine Learning in VLSI CAD Applications With Improved Domain-Specific Evaluation Metric and Learning Strategies

The design automation community has been actively exploring machine learning for VLSI CAD. Many studies have explored learning-based techniques for cross-stage prediction tasks in the design flow. Although building machine learning models usually requires a large amount of data, most studies can only generate small internal datasets for validation due to the lack of large public datasets. Such a situation challenges the research in this field and raises potential issues like difficulty in benchmarking and reproducing results, limited research scope on small internal datasets, and high bar for new researchers. Therefore, in this paper, we present an open-source dataset called “CircuitNet” for machine learning tasks in VLSI CAD. The dataset consists of more than 10K samples extracted from versatile runs of commercial design tools based on 6 open-source RISC-V designs which support typical cross-stage prediction tasks, such as routability and IR drop prediction, with extensive benchmarking on recent models. With the dataset prepared, we identify two practical challenges, data imbalance and model transferability, for machine learning application in CAD. To overcome data imbalance, we propose a loss function, biased loss, to give more weight to the minority, leading to 2% congestion reduction in routability driven placement. We test the model transferability from RISC-V designs to ISPD 2015 contest designs in congestion prediction with several transfer learning methods, and further proposed a knowledge distillation based transfer learning framework with up to 20% accuracy improvement. We believe this dataset can open up new opportunities for machine learning in CAD research and beyond.

Alleviation role of exogenous cadaverine on cell cycle, endogenous polyamines amounts and biochemical enzyme changes in barley seedlings under drought stress

Cadaverine (Cad), which has an independent synthesis pathway compared to other polyamine (PA) types, contributes to the health of plants by regulating plant growth and development, abiotic stress tolerance and antioxidant defense mechanisms. In this work, experiments were carried out to understand the effects of exogenous Cad (10 µM) application under drought stress (%22 PEG 6000) and without stress on cell cycle, total protein content, endogenous PA levels, and biochemical enzyme activities in barley (Hordeum vulgare cv. Burakbey) considering the potential of Cad to stimulate the drought-related tolerance system. Cad application in a stress-free environment showed an effect almost like low-impact drought stress, causing changes in all parameters examined compared to samples grown in distilled water environment (Control). The results clearly show that Cad applied against the negative effects of drought stress on all parameters creates a drought resistance mechanism of the plant. Accordingly, Cad applied together with drought stress increased the density of cells in the cell cycle (G1–S and S–G2 phases) and the amount of endogenous (spermidine 10% and spermine 40%) PAs. In addition, while superoxide dismutase (SOD) (5%), (CAT) (55%) and ascorbate peroxidase (APX) (18%) enzyme levels increased, a stress response mechanism occurred due to the decrease in total protein content (20%) and malondialdehyde (MDA) (80%). As a result, exogenous application of 10 µM Cad showed that it reduced the negative effects of drought stress on endogenous PA amounts, cell division and biochemical activities in barley.

A morphological study of fivefold Islamic geometric patterns using formal grammar for computer-aided design applications

This paper presents a morphological study of Islamic geometric patterns (IGP) and their role in application of formal grammar in computational modeling of IGPs. Through a comprehensive literature review and data collection, we analyze the morphological properties of these patterns using techniques such as geometric transformations, pattern classification, and symmetry analysis. Based on our findings, we explore how these properties can be used in constructing a formal grammar through string rewriting system for a CAD application. Building on a study on the potential of a string rewriting system for modeling IGPs, the current research suggests an update to the previous system and introduces a new morphological structure for IGPs. The new method has an expanded sample set and is tested on a class of 5-fold star patterns with 12 members and demonstrates successful development. The results are implemented in a Grasshopper add-on, providing a flexible platform to generate the patterns through strings and to control their parameters. This tool opens up new possibilities to bridge traditional patterns with contemporary technologies and make them more accessible. Furthermore, it contributes to the preservation of IGPs as a significant cultural and architectural heritage, while also advancing the evolution of these patterns to a new and contemporary generation.

Methodology Proposal and 3D Model Creation of a Car Steering Wheel

Currently, the largest milestone to successfully bring products to market is to shorten the production time interval, so the production of any product should be very fast. Customers are far more demanding and recently prefer the option to customize products. A key element in the development of prototypes and the overall shortening of the production process is rapid prototyping, an integral part of which is virtual modeling. Modeling is completed through explicit or parametric 3D CAD software. This article proposes a methodology for creating a 3D virtual model of a car steering wheel and then creates an assembled spatial model in real size. Attention is focused on the theoretical knowledge of the problem, the specification of dimensions, the number of assembly members and the selection of a suiTable 3D CAD application in which the steering wheel is modeled. Many specific software features are also described that are not standardly used and make a significant contribution to a more design-attractive output.

Retracted: Application of CAD in Semifinished Product Packaging Art Design

Retracted: Application of CAD in Semifinished Product Packaging Art Design

A new technique to transfer the upper maxillary arch position using a facebow, a transfer table, and a reference block with a CAD application.

This paper presents a method for the digital transfer of the upper maxillary arch position using a facebow, a transfer table, and a reference block with a CAD application without requiring physical casts mounted with articulating gypsum. This technique facilitates the prosthetic digital workflow when the impression is made via intraoral scanning, to obtain the placement of the maxillary arch in the anatomical reference planes and in relation to the axes of rotation of the mandibular movements.

Application of computer-aided CAD in urban planning heritage protection

Computer-aided CAD system plays an important role in urban planning and heritage conservation. When developing new products, the computer-aided system can effectively identify the existing CAD model and facilitate the reuse for design, thus shortening the development cycle, reducing the development cost, and improving the development efficiency. Therefore, this paper proposes a concept of computer learning algorithm and a model of naive Bayesian algorithm, that is, urban cultural heritage is an important carrier of human history and culture. After long-term development and accumulation, the current form and spiritual significance have evolved. Since the reform and opening up, China's urban heritage protection has also achieved fruitful results and valuable experience, thus forming a three-level protection system of famous cities, famous streets and cultural protection buildings. With the continuous maturity of computer-aided CAD system theory in the field of urban heritage, CAD system has deepened the understanding of "culture" in heritage, and the practice of heritage protection has gradually shifted from traditional urban architecture protection to anthropology, cultural geography and other humanities and social sciences. At this stage, computer-aided CAD urban planning introduced the integrity-, diversity- and development-oriented sustainable development of heritage protection, and paid unprecedented attention to the local nature of heritage or the special background of heritage generation. The focus on urban heritage protection has shifted from simply proposing protection practices to the power and interest mechanism behind heritage protection. Only in this way can heritage management truly maintain sustainable development.

Quantification of Groundwater Hazards Related to Fluvial Floods via Groundwater Flow Modelling: A Review

Flood-related issues include the impact of groundwater on flood protection measures and other subsurface structures in a protected area. At the same time, subsurface elements of flood protection structures may significantly influence the natural groundwater regime and affect existing structures during non-flood periods. The paper provides an overview of hazardous factors linked to groundwater and specifies variables for the quantification of related hazards. Appropriate hydraulic groundwater flow models are presented and discussed, and their suitability for the modelling of individual typical problems and for hazard quantification is specified. The use of models and the application of CAD and GIS tools for data pre- and post-processing is mentioned in brief and demonstrated on examples of typical practical situations.

Design of 5G+VR Environment Simulation Tourism System Based on CAD Technology

Computer-Aided Design and Applications is an international journal on the applications of CAD and CAM. It publishes papers in the general domain of CAD plus in emerging fields like bio-CAD, nano-CAD, soft-CAD, garment-CAD, PLM, PDM, CAD data mining, CAD and the internet, CAD education, genetic algorithms and CAD engines. The journal is aimed at all developers and users of CAD technology to ptovide CAD solutions for various stages of design and manufacturing. The journal publishes all about Computer-Aided Design and Computer-Aided technologies.

The Application and Development of Traditional Residential Building Symbols in Modern Environmental Design

Computer-Aided Design and Applications is an international journal on the applications of CAD and CAM. It publishes papers in the general domain of CAD plus in emerging fields like bio-CAD, nano-CAD, soft-CAD, garment-CAD, PLM, PDM, CAD data mining, CAD and the internet, CAD education, genetic algorithms and CAD engines. The journal is aimed at all developers and users of CAD technology to ptovide CAD solutions for various stages of design and manufacturing. The journal publishes all about Computer-Aided Design and Computer-Aided technologies.

Application of 3D Image Generation Algorithm for Museum Space Design

Computer-Aided Design and Applications is an international journal on the applications of CAD and CAM. It publishes papers in the general domain of CAD plus in emerging fields like bio-CAD, nano-CAD, soft-CAD, garment-CAD, PLM, PDM, CAD data mining, CAD and the internet, CAD education, genetic algorithms and CAD engines. The journal is aimed at all developers and users of CAD technology to ptovide CAD solutions for various stages of design and manufacturing. The journal publishes all about Computer-Aided Design and Computer-Aided technologies.