检索结果-内蒙古大学图书馆

arXiv 2023年

作者： Park, Jangho Kwon, Gihyun Ye, Jong Chul Kim Jaechul Graduate School of AI Korea Republic of Robotics Program Department of Bio and Brain Engineering KAIST Korea Republic of

Recently, there has been a significant advancement in text-to-image diffusion models, leading to groundbreaking performance in 2D image generation. These advancements have been extended to 3D models, enabling the generation of novel 3D objects from textual descriptions. This has evolved into NeRF editing methods, which allow the manipulation of existing 3D objects through textual conditioning. However, existing NeRF editing techniques have faced limitations in their performance due to slow training speeds and the use of loss functions that do not adequately consider editing. To address this, here we present a novel 3D NeRF editing approach dubbed ED-NeRF by successfully embedding real-world scenes into the latent space of the latent diffusion model (LDM) through a unique refinement layer. This approach enables us to obtain a NeRF backbone that is not only faster but also more amenable to editing compared to traditional image space NeRF editing. Furthermore, we propose an improved loss function tailored for editing by migrating the delta denoising score (DDS) distillation loss, originally used in 2D image editing to the three-dimensional domain. This novel loss function surpasses the well-known score distillation sampling (SDS) loss in terms of suitability for editing purposes. Our experimental results demonstrate that ED-NeRF achieves faster editing speed while producing improved output quality compared to state-of-the-art 3D editing models. Code and rendering results are available at our project page1 © 2023, CC BY.

关键词： Distillation

来源：评论

学校读者我要写书评

暂无评论

International collaboration towards innovation management: a network perspective and the Global Innovation Index

引用

Journal of Innovation and Entrepreneurship 2024年第1期13卷 32页

作者： Pepe, Clarisse G. E. Fonseca, Marcus V. A. Silva Marques, Christiane F. Production Engineering Program Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering Federal University of Rio de Janeiro Cidade Universitária Centro de Tecnologia Bloco F-Sala 103 RJ Rio de Janeiro 21941-598 Brazil Institute of Technology in Immunobiologicals (Bio-Manguinhos) Oswaldo Cruz Foundation (Fiocruz) Av. Brasil 4365 CA Vinícius da Fonseca RJ Rio de Janeiro 21040-900 Brazil

This article aims to fill an existing knowledge gap within the literature: the characteristics of networks of publication on innovation management research and its relationship with country’s innovativeness. The study is grounded in the theory that the creation of knowledge and collaboration within networks play a pivotal role in improving a nation’s innovation capacity. It presents and describes the characteristics of co-authorship networks of scientific publications among authors from different countries. The published articles were extracted from the Scopus and Web of Science databases, considering a period of 12 years. Following the identification of pivotal countries, the research proceeded to investigate whether their positioning within the network has an impact on their innovation capabilities. To underpin this analysis, data from the Global Innovation Index ranking were employed. Among the six countries demonstrating noteworthy centrality metrics throughout the entire period, Germany, the United States, and the United Kingdom are also categorized as innovators according to the Global Innovation Index. The overlap observed suggests a relationship between countries maintaining consolidated and resilient innovation networks and positive performance in terms of innovation. However, it should be noted that innovation is influenced by a range of factors, including strategies and policies on international collaboration. © The Author(s) 2024.

关键词： Co-authorship networks Global Innovation Index Innovation management Scientific collaboration

来源：评论

学校读者我要写书评

暂无评论

Dead Reckoning of a Mobile Robot in 2-Dimensional Special Euclidean Group

Dead Reckoning of a Mobile Robot in 2-Dimensional Special Eu...

引用

International Conference on Control, Automation and Systems ( ICCAS)

作者： Da Bin Jeong Nak Yong Ko Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence System Graduate School Chosun University Gwangju Korea Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence System Chosun University Gwangju Korea

This paper describes a Lie group approach to dead reckoning of a mobile robot. Navigation algorithms do not use dead reckoning alone for estimation of location and attitude of a mobile robot. Dead reckoning is used for prediction or rough guess of robot location for a short time. It is combined with other information to find the best possible estimation of the robot location and attitude. More precise dead reckoning improves the localization performance. Moreover, proper formulation of dead reckoning makes the location estimation problem more consistent and robust. This paper formulates dead reckoning of a mobile robot in Lie group. For dead reckoning in 2-dimensional space, 2-dimensional special Euclidean group is used. Simulation results show that the proposed method provides exact prediction of robot location and attitude regardless of the sampling period.

关键词： Location awareness Dead reckoning Simulation Estimation programmable logic arrays Prediction algorithms Robustness

来源：评论

学校读者我要写书评

暂无评论

Application of Visual Inertial Odometry for Pose Estimation of a Mobile Robot

Application of Visual Inertial Odometry for Pose Estimation ...

引用

International Conference on Control, Automation and Systems ( ICCAS)

作者： Boeun Lee Nak Yong Ko Hong Gi Yeom Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence SystemGraduate School Chosun University Gwangju Korea Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence System Chosun University Gwangju Korea

In this paper, an application of visual inertial odometry is described. Details of the implementation including the calibration are also described. The method uses visual data from two cameras and the measurements from inertial measurement unit. Previous researches usually used only front view image, whereas this study uses three different visual data from different view angles: front view, floor view, and ceiling view. The results are compared and the effect according to different view angles is analyzed. The comparison shows that the number of detectable features affects the performance of the visual odometry.

关键词： Visualization Estimation error Measurement units Robot vision systems Pose estimation Feature extraction Cameras

来源：评论

学校读者我要写书评

暂无评论

Navigation of Underwater Robots Compensating Attitude Error between Sensor Coordinate Systems

引用

Journal of Institute of Control, Robotics and Systems 2022年第6期28卷 566-574页

作者： Jeong, Da Bin Ko, Nak Yong Chung, Jun Hyuk Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence System Graduate School Chosun University Korea Republic of Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence System Chosun University Korea Republic of ROBORO Co. LTD. Korea Republic of

This paper presents a navigation method for underwater robots that compensates for misalignment between sensors. Because precise coordinate systems of sensors for navigation cannot be given, errors in the transformation of sensor measurements are inevitable. To decrease navigation error due to the misalignment, the proposed method estimates the misalignment and compensates for navigation error considering the misalignment. The proposed method is implemented by the extended Kalman filter and verified through simulation and experiments. The experiment demonstrates that the method improves navigation accuracy and the error covariance of the misalignment converges. © ICROS 2022.

关键词： Extended Kalman filters

来源：评论

学校读者我要写书评

暂无评论

Underwater Robot Navigation Through Compensation of Sensor Misalignment in Non-linear Space

Underwater Robot Navigation Through Compensation of Sensor M...

引用

International Conference on Control, Automation and Systems ( ICCAS)

作者： Da Bin Jeong Woong Choi Nak Yong Ko Department of Electronic Engineering Interdisciplinary Program in IT- Bio Convergence System Graduate School Chosun University Gwangju Republic of Korea College of ICT Construction Welfare Convergence Kangnam University Gyeonggi-do Republic of Korea Department of Electronic Engineering Interdisciplinary Program in IT-Bio Convergence System Chosun University Gwangju Republic of Korea

This paper presents a novel approach to estimate and compensate for the misalignment between the Inertial Measurement Unit (IMU) and Doppler Velocity Log (DVL) sensors. Estimating the location and attitude of an ROV usually combines the attitude by IMU and the velocity by the DVL provided in the sensor coordinate system. The attitude is regarded as the attitude of the ROV and the velocity in the sensor coordinate frame is converted to the velocity in the inertial coordinate frame. Misalignment in the DVL and IMU causes errors in the converted velocity and results in the degradation of the navigation performance. The proposed method represents the misalignment using unit quaternion. Especially, the method utilizes the Lie theory to deal with the operations on unit quaternions which constitute a Lie group, called the 3-sphere group. Simulation and testing of the method in a marine environment validate its effectiveness and practical applicability.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Application of 3D Printing and Design in Healthcare: A Focus on Undergraduate Research to Attract Students to bioengineering and Related Disciplines

Application of 3D Printing and Design in Healthcare: A Focus...

引用

Frontiers in Education (FIE) Conference

作者： Cindy M. Zelada-Quiroz Brian L. Reyes-Santiago Eduardo I. Ortiz-Rivera Bio-Engineering Graduate Program University of Puerto Rico at Mayagüez Mayagüez PR Department of Computer Science and Engineering University of Puerto Rico at Mayagüez Mayagüez PR Department of Electrical and Computer Engineering University of Puerto Rico at Mayagüez Mayagüez PR

ISBN: (数字)9798350351507

ISBN: (纸本)9798350363067

This research-to-practice paper describes developing and analyzing state-of-the-art smart boots created by combining CAD technology and advanced 3D printing techniques to attract students in bio-engineering and related fields. The primary objective of this innovative immobilization boot is to expedite fracture recovery phases through an ergonomic design to ensure optimal patient comfort during its use. Technological solutions are crucial in aiding the rehabilitation process for fractures caused by falls, heavy lifting, or rotational trauma. However, cost and comfort-related issues persist, underscoring the need for alternative approaches. This research addresses these challenges and delves into the broader implications of fracture treatment, catalyzing future projects and investigations in bioengineering. Additionally, this study serves as an educational tool that sparks the interest of high school and engineering students, promoting multidisciplinary collaboration in innovation. By involving students in specialized courses covering 3D design, human bone anatomy, biology, and materials science, this initiative empowers them to deepen their knowledge and develop new technologies to address bone injury problems. Material analyses include evaluating the type of material depending on the fracture site, such as PLA for printing and cotton and silicone gel for the midsection between the splint and the body. This research aims to advance our understanding of the type of fracture, the methods associated with their treatment, and tissue repair processes during bone callus formation. To summarize, this multidisciplinary approach drives advancements in bio-engineering and related fields, aiming to enhance patient outcomes and inspire students to pursue further research in bio-engineering and related fields. As part of this endeavor, a list of university-level courses based on the experience of the University of Puerto Rico at Mayaguez (UPRM), such as biology, bio-materials, 3D

关键词： Technological innovation Materials science and technology Three-dimensional displays Tissue engineering Medical services Three-dimensional printing Bones Mechanical factors Manufacturing Sparks

来源：评论

学校读者我要写书评

暂无评论

Relationship Between Mechanical Deformation and Contact Force Applied by Catheter Tip on Cardiac Muscle: Experimentation and Computer Modeling

Relationship Between Mechanical Deformation and Contact Forc...

引用

IEEE Eurasia Conference on biomedical engineering, Healthcare and Sustainability (ECbioS)

作者： Yukako Ijima Kriengsak Masnok Juan J. Perez Ana González-Suárez Enrique Berjano Nobuo Watanabe Master's Program Global Course of Engineering and Science Graduate School of Engineering and Science Shibaura Institute of Technology Saitama Japan Biofluid Science and Engineering Laboratory Functional Control Systems Graduate School of Engineering and Science Shibaura Institute of Technology Saitama Japan Department of Electronic Engineering BioMIT Universitat Politecnica de Valencia Valencia Spain Translational Medical Device Lab School of Engineering University of Galway Galway Ireland Department of Bio-Science and Engineering Biofluid Science and Engineering Laboratory Functional Control Systems Graduate School of Engineering and Science College of Systems Engineering and Science Shibaura Institute of Technology Saitama Japan

The cardiac muscle is elastic and deformable. Pushing a catheter in contact with the cardiac muscle surface to conduct focal energy-based ablative therapies, such as RF ablation, requires an adequate electrode-tissue contact surface to transfer the energy to the target site. In this regard, the relationship between the contact force (CF) and the resulting mechanical response is still unclear, in particular, the insertion depth (ID) and the diameter of the surface deformation. The objective of this study was to quantify these relationships using an ex vivo model and a computational model. A rigid bar with a 2.3 mm diameter blunt tip (mimicking a 7Fr standard ablation catheter) was placed at a perpendicular orientation on a fragment of the porcine heart. CF values ranged from 10 to 80g. We used ANSYS to build a Mooney-Rivlig model of 3 parameters based on hyperelastic material and to simulate the same conditions as in the experiments. The experimental results showed a strong linear correlation between CF and insertion depth ID ( $\mathrm{R}^{2}=0.97, \mathrm{P} < 0.001$ ), from $0.7 \pm 0.3$ mm at 10 gto $6.9 \pm 0.1$ mm at 80 g. We also found a strong linear correlation between CF and minor and major diameters of the surface deformation assessed, from $4.0 \pm 0.4$ mm at 20 g to $10.3 \pm 0.0$ mm at 80 g ( $\mathrm{R}^{2}=0.96$ ), and from $6.4 \pm 0.7$ mm at 20 g to $16.7 \pm 0.1$ mm at 80 g ( $\mathrm{R}^{2}=0.95$ ), respectively. A descent gradient algorithm was used to minimize the mean square error (MSE) between the experimental and computational results of ID for the 10 values of CF. After trying different combinations for the3 parameters of the Mooney-Rivlig model, an optimal fit was achieved after 5 iterations, with an error of less than 0.55 mm for ID. This same mode was then used to predict the diameter of the surface deformation, obtaining an error of less than 0.65 mm. The results confirm that a Mooney-Rivlig model of three parameters based on

关键词：

来源：评论

学校读者我要写书评

暂无评论

Aloe vera and beeswax based coating to maintain shelf life of salak cv. Madu 3

Aloe vera and beeswax based coating to maintain shelf life o...

引用

3rd International Conference on Agricultural engineering for Sustainable Agriculture Production, AESAP 2019

作者： Sari, P.R.P. Darmawati, E. Ahmad, U. Postharvest Technology Master Program Graduate School Ipb University Bogor16680 Indonesia Departement of Mechanical Engineering and Bio-system Faculty of Agricultural Engineering and Technology Ipb University 16680 Indonesia

The coatings on fruits after harvested was applied to maintain the appearance and quality up to the consumer's hands. This study aimed to maintain color and reduce the level of decay of salak madu during storage. Salak madu was obtained from Madding Fresh, trader and supplier salak from Sleman, Yogyakarta. The salak was coated with Aloe vera gel (20% and 50%) and beeswax (3, 6, and 10%). All samples were stored at 25-28 °C. The parameters used to measure the effect of treatment are skin color, percentage of decay, and weight loss. Observations were carried out for 12 days. The results of this study were found that dyeing on a coating made from Aloe vera 50% was able to slow down weight loss and percentage of decay until the 6 days, while Aloe vera 30% was better at maintaining color changes during storage. Beeswax 3% coating can slow down discoloration and percentage of decay until 6 days of storage. Long-term storage (12 days) with beeswax 10% was better in maintaining changes in the quality of salak madu, while for short-term storage (6 days), beeswax 3% gives better results. © Published under licence by IOP Publishing Ltd.

关键词： Coatings

来源：评论

学校读者我要写书评

暂无评论

Comparative genomics based exploration of xenobiotic degradation patterns in Glutamicibacter, Arthrobacter, and Pseudarthrobacter isolated from diverse ecological habitats

引用

Heliyon 2024年第22期10卷 e40280页

作者： Ghimire, Nisha Kim, Byeollee Han, So-Ra Oh, Tae-Jin Department of Life Science and Biochemical Engineering Graduate School SunMoon University Asan 31460 South Korea Bio Big Data-based Chungnam Smart Clean Research Leader Training Program SunMoon University Asan 31460 South Korea Genome-based BioIT Convergence Institute Asan 31460 South Korea Department of Pharmaceutical Engineering and Biotechnology SunMoon University Asan 31460 South Korea

Xenobiotics pose a substantial threat to environmental integrity by disrupting normal ecosystems. The genus Arthrobacter, known for its metabolic versatility can degrade several xenobiotic compounds. Arthrobacter strains have also undergone frequent taxonomic revisions and reclassifications to strains including Pseudarthrobacter and Glutamicibacter. Here, we present the complete genome sequence of Glutamicibacter protophormiae strain NG4, isolated from a coastal area surrounded by chemical plants. Further, through comparative genomics involving 55 strains from Glutamicibacter, Arthrobacter, and Pseudarthrobacter, we elucidated taxonomic relationships and xenobiotic degradation potential. Our genomics-based findings revealed a generally even distribution of xenobiotic-degrading genes and pathways among the studied strains. Glutamicibacter species emerged as potential candidate for steroid degradation. A significant number of host-specific and environmental isolates predominantly possessed pathways for 4-hydroxybenzoate (4-HB) degradation and only the environmental isolates possessed benzoate degradation pathway. Certain Arthrobacter and Pseudarthrobacter species isolated from the environmental settings were identified as potential degraders of toluene, xylene, and phenanthrene. Notably, most strains contained pathways for azathioprine, capecitabine, and 5-fluorouridine pharmaceutical drug metabolism. Overall, our findings shed light on microbial metabolic diversity among 55 strains isolated from diverse sources and hint the importance of strict environmental monitoring. Further, for the application of the putative xenobiotic degrading strains, experimental validation is required in the future. © 2024

关键词： Arthrobacter Glutamicibacter KEGG pathway Pseudarthrobacter Xenobiotic

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：