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2. Digital Twin Driven Bionic Shape Design Path Construction Research

Author

Meng, Defang, Zhang, Jixiao, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Chen, Youbin, editor, Shen, Chaoqun, editor, and Rak, Joanna, editor

Published
2024
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4. The Development and Research of Wearable Water Life-Saving Products

Author

Bai, Yang, Zhang, Jixiao, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, M. Dom, Mohd Fauzi bin Sedon, editor, Zabielskis, Peter Thomas, editor, Liu, Xudong, editor, and Liu, Xiao, editor

Published
2023
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5. From Reality to Being Future: Sustainable Design and Rethinking

Author

Su, Bingqing, Zhang, Jixiao, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Majoul, Bootheina, editor, Pandya, Digvijay, editor, and Wang, Lin, editor

Published
2023
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6. Implications of Cizhou Kiln for Product Design

Author

Wang, Peng, Zhang, Jixiao, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Zhan, Zehui, editor, Chew, Fong Peng, editor, and Anthony, Marcus T., editor

Published
2023
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8. Planned prosthesis size in modified 3D printed patient-specific instrumentation-assisted total knee arthroplasty: analysis of consistency with intraoperative size

Author

SUN Bin, ZHANG Jixiao, YUAN Liang, WANG Xiaohua, and ZHANG Ke

Subjects
3d printing, patient-specific instrumentation, total knee arthroplasty, Medicine (General), R5-920
Abstract

Objective To explore the prediction accuracy of prosthesis size of the modified 3D printed patient-specific instrumentation (PSI)-assisted total knee arthroplasty (TKA) by comparing the difference between intraoperative prosthesis size and preoperative planned prosthesis size. Methods We optimized and improved the workflow, design scheme, shape of guide, operation technology and verification method of the traditional PSI-assisted TKA. A total of 126 patients (137 knees) who received 3D printed PSI-assisted TKA based on preoperative CT images in our center were recruited in this study. The differences between the actual prosthesis size and the preoperative planned size were compared and analyzed. Results All patients completed the surgery successfully, and no serious complications occurred. For the femoral side, the difference between the actual used size and the doctor's planned size was observed in 7 cases, and the difference between the actual used size and the engineer's planned size was in 25 cases (P < 0.01), and the engineer's planned size adjusted by doctors was 19 cases (P < 0.01). For the tibial side, the actual used size and the doctor's planned size was 39 cases, the difference between the actual used size and the engineer's planned size was 44 cases, and the engineer's planned size adjusted by doctors was 5 cases. Conclusion The planned prosthesis size in Our modified 3D printed PSI-assisted TKA is consistent with the intraoperative prosthesis size, and the plan will be more consistent after adjustment by the doctors. [Key words]Objective To explore the prediction accuracy of prosthesis size of the modified 3D printed patient-specific instrumentation (PSI)-assisted total knee arthroplasty (TKA) by comparing the difference between intraoperative prosthesis size and preoperative planned prosthesis size. Methods We optimized and improved the workflow, design scheme, shape of guide, operation technology and verification method of the traditional PSI-assisted TKA. A total of 126 patients (137 knees) who received 3D printed PSI-assisted TKA based on preoperative CT images in our center were recruited in this study. The differences between the actual prosthesis size and the preoperative planned size were compared and analyzed. Results All patients completed the surgery successfully, and no serious complications occurred. For the femoral side, the difference between the actual used size and the doctor's planned size was observed in 7 cases, and the difference between the actual used size and the engineer's planned size was in 25 cases (P < 0.01), and the engineer's planned size adjusted by doctors was 19 cases (P < 0.01). For the tibial side, the actual used size and the doctor's planned size was 39 cases, the difference between the actual used size and the engineer's planned size was 44 cases, and the engineer's planned size adjusted by doctors was 5 cases. Conclusion The planned prosthesis size in Our modified 3D printed PSI-assisted TKA is consistent with the intraoperative prosthesis size, and the plan will be more consistent after adjustment by the doctors.

Published
2022
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9. Anterior femoral notching in total knee arthroplasty assisted with 3D printed patient-specific instrumentation: a cause analysis

Author

WANG Xiaohua, JI Xiaope, ZHANG Jixiao, YUAN Liang, and SUN Bin

Subjects
3d printing technology, patient-specific instrumentation knee replacement, anterior femoral notching, imaging, three-dimension, Medicine (General), R5-920
Abstract

Objective To find out the causes of anterior femoral notching in 3D printed patient-specific patient-specific instrumentation (PSI) assisted total knee arthroplasty (TKA). Methods A retrospective analysis was carried out on the consecutive cases undergoing PSI assisted TKA in the Peking University International Hospital from January 2019 to September 2021. The clinical data of those having anterior femoral notching were collected. 3D CT scanning was performed on the knee joint after intraoperative osteotomy and the intraoperative bone fragments. Rapidform software (Version 2006) was used to reconstruct 3D images and to perform image registration and comparison analysis with the preoperatively planned 3D models. The anterior femoral notching depth was measured, and the differences in the thickness of bone fragments between preoperatively planned and intraoperative bone cutting in order to analyze the causes of the anterior femoral notching. Results A total of 86 consecutive cases (94 knees) were included and 17 cases (18/94, 19.1%) of them had anterior femoral notching. The causes of anterior femoral notching were summarized into 3 categories: abnormal position of the PSI (10 cases, 83.3%), intraoperative reduction of the femoral prosthesis size (2 cases, 16.7%), and overextension of the femoral prosthesis (1 case, 8.3%). Conclusion Abnormal femoral PSI position, intraoperative reduction of femoral prosthesis size, and preoperative femoral prosthesis overextension design are the main causes of anterior femoral notching after PSI assisted knee arthroplasty.

Published
2022
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10. Effect of 3D printed patient-specific cutting guide on patellar height and joint line position in total knee arthroplasty

Author

WANG Junfeng, ZHANG Jixiao, and WANG Xiaohua

Subjects
total knee arthroplasty, patient-specific instrumentation, patellar height, joint line position, Medicine (General), R5-920
Abstract

Objective To compare the effect of 3D printed patient-specific instrumentation (PSI) and conventional instrumentation (CI) on the patellar height and joint line position in total knee arthroplasty (TKA). Methods A retrospective case-control study was carried out on 58 patients, who underwent primary TKA in our hospital from January 2021 to October 2021. According to the osteotomy tools selected in TKA, the patients were divided into CI-TKA group and PSI-TKA group. The Insall-Salvati index, modified Caton-Deschamps (mCD) index and relative height of joint line before and after TKA were recorded and compared between the 2 groups. Results In terms of the Insall-Salvati index, the absolute difference between preoperative and postoperative score was 0.11 (0.07, 0.15) in the CI-TKA group, and 0.06 (0.03, 0.12) in the PSI-TKA group, and statistical difference was seen in the postoperative index between the 2 groups (P < 0.05). Similarly, the absolute difference between preoperative and postoperative mCD index was 0.16±0.09 in the CI-TKA group and 0.08±0.05 in the PSI-TKA group, and obvious difference was also seen in the postoperative difference between them (P < 0.01). However, the absolute difference between preoperative and postoperative joint line height was 2.53 (1.64, 4.40) mm in the CI-TKA group and 2.27 (1.53, 5.32) mm in the PSI-TKA group. There was no notable difference in postoperative joint line position between the 2 groups, but the position after TKA were significantly higher in both groups than that before TKA (P < 0.05). Conclusion The use of 3D printed PSI can help reduce the impact of TKA on the patella height, but there is no obvious advantage in maintaining the joint line position compared with conventional instrumentation.

Published
2022
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16. Hyper-Relational Knowledge Graph Neural Network for Next POI

Author

Zhang, Jixiao, Li, Yongkang, Zou, Ruotong, Zhang, Jingyuan, Fan, Zipei, Song, Xuan, Zhang, Jixiao, Li, Yongkang, Zou, Ruotong, Zhang, Jingyuan, Fan, Zipei, and Song, Xuan

Abstract

With the advancement of mobile technology, Point of Interest (POI) recommendation systems in Location-based Social Networks (LBSN) have brought numerous benefits to both users and companies. Many existing works employ Knowledge Graph (KG) to alleviate the data sparsity issue in LBSN. These approaches primarily focus on modeling the pair-wise relations in LBSN to enrich the semantics and thereby relieve the data sparsity issue. However, existing approaches seldom consider the hyper-relations in LBSN, such as the mobility relation (a 3-ary relation: user-POI-time). This makes the model hard to exploit the semantics accurately. In addition, prior works overlook the rich structural information inherent in KG, which consists of higher-order relations and can further alleviate the impact of data sparsity.To this end, we propose a Hyper-Relational Knowledge Graph Neural Network (HKGNN) model. In HKGNN, a Hyper-Relational Knowledge Graph (HKG) that models the LBSN data is constructed to maintain and exploit the rich semantics of hyper-relations. Then we proposed a Hypergraph Neural Network to utilize the structural information of HKG in a cohesive way. In addition, a self-attention network is used to leverage sequential information and make personalized recommendations. Furthermore, side information, essential in reducing data sparsity by providing background knowledge of POIs, is not fully utilized in current methods. In light of this, we extended the current dataset with available side information to further lessen the impact of data sparsity. Results of experiments on four real-world LBSN datasets demonstrate the effectiveness of our approach compared to existing state-of-the-art methods.

Published
2023

21. Emotional Drain in Digital Design for Inheritance of Intangible Cultural Heritage

Author

Bai Yang, Ding Fanzhuo, Ding Baihao, and Zhang Jixiao

Subjects
lcsh:GE1-350, Intangible cultural heritage, Process (engineering), media_common.quotation_subject, ComputingMethodologies_MISCELLANEOUS, GeneralLiterature_MISCELLANEOUS, Presentation, Aesthetics, ComputingMilieux_COMPUTERSANDSOCIETY, Sociology, Inheritance, lcsh:Environmental sciences, media_common, Connotation
Abstract

As technology advances, digitalization has become more and more widespread. This is true of the continuation and inheritance of intangible cultural heritage in which digital technology is also increasingly utilized. For one thing, the contents of intangible cultural heritage that are difficult to preserve need to be refined for technological presentation. For another, the emotional connotation of intangible cultural heritage implied in the inheriting process should be retained as far as possible. This paper discusses that how digital technology broadens the path of inheriting intangible cultural heritage, analyzes the logical connection between the protection of intangible cultural heritage and digital technology, and also explores the future of developing intangible cultural heritage with the help of digital technology.

Published
2021

25. The design and reconstruction of the geographical landscape is realized in the rural fragile space

Author

Ding Fanzhuo and Zhang Jixiao

Subjects
lcsh:GE1-350, business.industry, media_common.quotation_subject, Space (commercial competition), Landscape design, Natural (archaeology), Geography, Desertification, Urbanization, Rural area, business, Environmental planning, lcsh:Environmental sciences, media_common
Abstract

In the face of the two-way threat of the deteriorating natural environment and accelerating urbanization progress, the countryside has obvious landscape fragile characteristics, such as water and soil erosion, land desertification and industrial ruins left, some of spaces are even harder to remedy. It is of great significance and value for the planning and construction of rural areas to study the fragile space of rural landscape, identify the cause of its fragile and carry out landscape design and reconstruction.

Published
2020

26. Research on Universal Design of Water-based Strength Training Fitness Products

Author

Zhang Jixiao and Ding Baihao

Subjects
lcsh:GE1-350, Scheme (programming language), Point (typography), Computer science, Strength training, Generalization, Universal design, media_common.quotation_subject, Industrial engineering, Training (civil), Product (category theory), Function (engineering), computer, lcsh:Environmental sciences, computer.programming_language, media_common
Abstract

The existing strength training fitness products have the problems of single-use group and function. First of all, this paper takes the universal design as the research criterion, finds out the design pain point of the product to realize the strength training generalization, and proposes to use water as the medium to solve the problems of different groups when carrying out strength training because the products can not meet the different training intensity, universal safety, and training parts. Then, the products can be generalized to different groups and their diversified training needs. Finally, the design scheme is analyzed qualitatively and quantitatively, and compared with the best strength training universal products on the market, so as to verify that water as the medium is feasible for effectively realizing the product generalization in different groups and diversified training needs.

Published
2020

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