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Articles 1 - 30 of 39
Full-Text Articles in Social and Behavioral Sciences
A 3d Printed Modular Soft Gripper For Conformal Grasping, Charbel Tawk, Rahim Mutlu, Gursel Alici
A 3d Printed Modular Soft Gripper For Conformal Grasping, Charbel Tawk, Rahim Mutlu, Gursel Alici
Faculty of Engineering and Information Sciences - Papers: Part A
© 2020 IEEE. In this work, a 3D printed modular soft gripper with highly conformal soft fingers was developed. A soft auxetic structure with compliant ribs is 3D printed simultaneously with each soft pneumatic finger for conformal grasping. The fingers of the soft gripper were printed monolithically, without requiring support material and postprocessing, using a low-cost and open-source fused deposition modeling (FDM) 3D printer that employs a commercially available thermoplastic polyurethane (TPU). The soft fingers of the gripper were optimized using finite element modeling (FEM). The FE simulations accurately predicted the performance of the fingers in terms of deformation and …
Barriers: An Exploration Of Architectural Structures As An Indication Of Wealth And Socioeconomic Status, Lisa Demoranville
Barriers: An Exploration Of Architectural Structures As An Indication Of Wealth And Socioeconomic Status, Lisa Demoranville
Honors Theses
I decided to explore the barriers and limitations of wealth through an investigation of architectural structures, focusing on popular industries and institutions on which our society commonly depends. I have noticed that places such as hospitals, schools, grocery stores, and restaurants differ dramatically depending on the neighborhoods in which they were located. This topic sparked my interest after living in Lima, Peru for a month, as I was able to observe the developing economy and dramatic division of wealth among the population. Certain questions about the divides and differences within a society and its culture started crossing my mind; not …
Bytecode Unification Of Geospatial Computable Models, Jan Kolar
Bytecode Unification Of Geospatial Computable Models, Jan Kolar
Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings
Geospatial modelling revolves around the structures of data and the semantics of these structures. This is enough in simple cases, but becomes insufficient when the best structure and semantics is hard to find or the solution is too heterogeneous to fix and reuse. Field-based and objects-based geospatial models often share common GIS data structures interchangeably, but their all possible meanings are too many to define in an immutable manner. Less studied approach to geospatial modelling is using mutable structural properties and their semantic interpretation. This work shows that the functional aspect of geospatial models is just as important as the …
3d Printing And Intellectual Property Futures, Thomas Birtchnell, Angela Daly, Thierry Rayna, Ludmila Striukova
3d Printing And Intellectual Property Futures, Thomas Birtchnell, Angela Daly, Thierry Rayna, Ludmila Striukova
Faculty of Social Sciences - Papers (Archive)
This report contains socio-legal research conducted on the relationship between 3D printing and intellectual property (IP) at the current point in time and in potential future scenarios, through the use of horizon-scanning methods in six countries—China, France, India, Russia, Singapore and the UK - to build a rich picture of this issue, comprising both developed and emerging economies.
A 3d Lateral Electrode Structure For Diamond Based Microdosimetry, Jeremy A. Davis, Kumaravelu Ganesan, Dale A. Prokopovich, Marco Petasecca, Michael L. F Lerch, David Jamieson, Anatoly B. Rosenfeld
A 3d Lateral Electrode Structure For Diamond Based Microdosimetry, Jeremy A. Davis, Kumaravelu Ganesan, Dale A. Prokopovich, Marco Petasecca, Michael L. F Lerch, David Jamieson, Anatoly B. Rosenfeld
Faculty of Engineering and Information Sciences - Papers: Part A
A diamond based microdosimeter prototype featuring a 3D lateral electrode structure was created using laser ablation and active brazing alloys and characterised by means of ion beam induced charge collection measurements and finite element analysis, using Synopsys TCAD simulation package.
3d Printing Of Transparent And Conductive Heterogeneous Hydrogel-Elastomer Systems, Kevin Tian, Jinhye Bae, Shannon Bakarich, C H. Yang, Reece Gately, Geoffrey M. Spinks, Marc In Het Panhuis, Zhigang Suo, Joost Vlassak
3d Printing Of Transparent And Conductive Heterogeneous Hydrogel-Elastomer Systems, Kevin Tian, Jinhye Bae, Shannon Bakarich, C H. Yang, Reece Gately, Geoffrey M. Spinks, Marc In Het Panhuis, Zhigang Suo, Joost Vlassak
Faculty of Science, Medicine and Health - Papers: part A
A hydrogel-dielectric elastomer system, polyacrylamide and poly(dimethylsiloxane) (PDMS), is adapted for extrusion printing for integrated device fabrication. A lithium-chloride-containing hydrogel printing ink is developed and printed onto treated PDMS with no visible signs of delamination and geometrically scaling resistance under moderate uniaxial tension and fatigue. A variety of designs are demonstrated, including a resistive strain gauge and an ionic cable.
A 3d Printed Monolithic Soft Gripper With Adjustable Stiffness, Rahim Mutlu, Charbel Tawk, Gursel Alici, Emre Sariyildiz
A 3d Printed Monolithic Soft Gripper With Adjustable Stiffness, Rahim Mutlu, Charbel Tawk, Gursel Alici, Emre Sariyildiz
Faculty of Engineering and Information Sciences - Papers: Part B
Soft robotics has recently gained a significant momentum as a newly emerging field in robotics that focuses on biomimicry, compliancy and conformability with safety in near-human environments. Beside conventional fabrication methods, additive manufacturing is a primary technique to employ to fabricate soft robotic devices. We developed a monolithic soft gripper, with variable stiffness fingers, that was fabricated as a one-piece device. Negative pressure was used for the actuation of the gripper while positive pressure was used to vary the stiffness of the fingers of the gripper. Finger bending and gripping capabilities of the monolithic soft gripper were experimentally tested. Finite …
A 3d Modeling Perspective: The Juxtaposition Between Nature And Technology, Caroline Grace Brustowicz
A 3d Modeling Perspective: The Juxtaposition Between Nature And Technology, Caroline Grace Brustowicz
Honors Theses
For my senior thesis I explore the juxtaposition between nature and technology. There is beauty in the ubiquitous contrast and coexistence between these two entities, which we encounter on a daily basis. My work has been inspired by Ernst Haeckel, a German biologist, naturalist, and artist from the early 1900’s. His artwork includes over 100 detailed drawings, prints, and multi-colored illustrations of animals and sea creatures with a focus on representing the intricate details found in nature. I’ve emulated this attention to detail within nature by modeling (using Cinema 4D software and 3D printing with a MakerBot printer) sculptures that …
3d Immersive Collection And Teaching Environments: The Yellow House Project At Uow, Michael K. Organ, Christopher L. Moore, Rebecca Daly, Neil R. Cairns
3d Immersive Collection And Teaching Environments: The Yellow House Project At Uow, Michael K. Organ, Christopher L. Moore, Rebecca Daly, Neil R. Cairns
Michael Organ
This paper discusses the Yellow House VR project at the University of Wollongong. Innovative virtual reality technologies such as Oculus Rift are being utilised to recreate the 1970s Sydney artist community space known as the Yellow House, as both an historic replication and openly accessible, immersive teaching and learning environment for use and adaptation by teachers, students, researchers and the general community. The paper considers the role of the library in the enhanced presentation of digitised collections through new and evolving technologies that provide opportunities for knowledge enhancement and support the development of student e-portfolios.
3d Immersive Collection And Teaching Environments: The Yellow House Project At Uow, Michael K. Organ, Christopher L. Moore, Rebecca Daly, Neil R. Cairns
3d Immersive Collection And Teaching Environments: The Yellow House Project At Uow, Michael K. Organ, Christopher L. Moore, Rebecca Daly, Neil R. Cairns
Senior Deputy Vice-Chancellor and Deputy Vice-Chancellor (Education) - Papers
This paper discusses the Yellow House VR project at the University of Wollongong. Innovative virtual reality technologies such as Oculus Rift are being utilised to recreate the 1970s Sydney artist community space known as the Yellow House, as both an historic replication and openly accessible, immersive teaching and learning environment for use and adaptation by teachers, students, researchers and the general community. The paper considers the role of the library in the enhanced presentation of digitised collections through new and evolving technologies that provide opportunities for knowledge enhancement and support the development of student e-portfolios.
3d Face Recognition Using Anthropometric And Curvelet Features Fusion, Dan Song, Jing Luo, Chunyuan Zi, Huixin Tian
3d Face Recognition Using Anthropometric And Curvelet Features Fusion, Dan Song, Jing Luo, Chunyuan Zi, Huixin Tian
Faculty of Engineering and Information Sciences - Papers: Part A
Curvelet transform can describe the signal by multiple scales, and multiple directions. In order to improve the performance of 3D face recognition algorithm, we proposed an Anthropometric and Curvelet features fusion-based algorithm for 3D face recognition (Anthropometric Curvelet Fusion Face Recognition, ACFFR). First, the eyes, nose, and mouth feature regions are extracted by the Anthropometric characteristics and curvature features of the human face. Second, Curvelet energy features of the facial feature regions at different scales and different directions are extracted by Curvelet transform. At last, Euclidean distance is used as the similarity between template and objectives. To verify the performance, …
Addressing Misconceptions About Engineering Through Student-Industry Interaction In A Video-Augmented 3d Immersive Virtual World, Sasha Nikolic, Thomas Goldfinch, Mark Jian Wei Lee, Christian H. Ritz
Addressing Misconceptions About Engineering Through Student-Industry Interaction In A Video-Augmented 3d Immersive Virtual World, Sasha Nikolic, Thomas Goldfinch, Mark Jian Wei Lee, Christian H. Ritz
Faculty of Engineering and Information Sciences - Papers: Part A
A key goal of engineering education is to ensure students are adequately prepared to enter professional practice. Unfortunately, students have been found to bring to university significant misconceptions about the types of work engineers perform, which can have an adverse impact on their readiness to fully appreciate and benefit from course activities. This paper presents a case study of how iSee, a collaborative online platform that allows for video conferencing within a three-dimensional immersive virtual world, was used to host a careers fair event in which students learned about the engineering profession and about the various engineering majors available to …
A Licence To Print: How Real Is The Risk Posed By 3d Printed Guns?, Thomas Birtchnell
A Licence To Print: How Real Is The Risk Posed By 3d Printed Guns?, Thomas Birtchnell
Faculty of Social Sciences - Papers (Archive)
3D printed guns are back in the news after Queensland Police reported last week that they had discovered a 3D printer in a raid on what appeared to be a "large-scale" weapons production facility as a part of Operation Oscar Quantum. According to police, the raid uncovered homemade weapons and ammunition in a workshop manufacturing facility "containing equipment used in the production of fully automatic machine guns, including a 3D printer, lathes, drill presses and other tools". The Gold Coast Bulletin reported that Detective Superintendent Jon Wacker, of the Drug and Serious Crime Group, said the "Uzi"-style guns, thought to …
Social Practices Of 3d Printing: Decentralising Control And Reconfiguring Regulation, Luke Heemsbergen, Robbie Fordyce, Bjorn Nansen, Thomas Apperley, Michael Arnold, Thomas Birtchnell
Social Practices Of 3d Printing: Decentralising Control And Reconfiguring Regulation, Luke Heemsbergen, Robbie Fordyce, Bjorn Nansen, Thomas Apperley, Michael Arnold, Thomas Birtchnell
Faculty of Social Sciences - Papers (Archive)
This paper considers the social practices of 3D printing by comparing consumer perspectives and practices with legal scholarship on intellectual property regimes. The paper draws on data gained through a mixed-methods approach involving participant observation, focus groups, and social network analysis of 3D printing file-sharing practices. It finds that while consumers display a level of naivety about their 3D printing rights and responsibilities, they possess a latent understanding about broader digital economies that guide their practices. We suggest that the social practices associated with 3D printing function through communication networks to decentralise manufacture and reconfigure legal capacities for regulation. The …
A Violent Debate: Could Guns Be Made At Home By 3d Printers?, Thomas Birtchnell, Robert Gorkin Iii
A Violent Debate: Could Guns Be Made At Home By 3d Printers?, Thomas Birtchnell, Robert Gorkin Iii
Robert Gorkin III
Gun laws have been back in the media recently due, largely, to the horrific events at Sandy Hook Elementary School on December 14, 2012 which claimed the lives of 20 children and six adults. In response President Obama has just unveiled gun control proposals.
2d Versus 3d Collaborative Online Spaces For Student Team Meetings: Comparing A Web Conferencing Environment And A Video-Augmented Virtual World, Sasha Nikolic, Mark Jw Lee, Peter J. Vial
2d Versus 3d Collaborative Online Spaces For Student Team Meetings: Comparing A Web Conferencing Environment And A Video-Augmented Virtual World, Sasha Nikolic, Mark Jw Lee, Peter J. Vial
Faculty of Engineering and Information Sciences - Papers: Part A
BACKGROUND OR CONTEXT Teamwork is an integral component of any engineering degree, but students often have difficulty organising team meetings outside of class times due to discrepancies in their individual study timetables as well as their family and work commitments. Rich-media synchronous online technologies such as video/web conferencing and virtual worlds can be used to help address this problem by enabling anyplace, anytime interaction, while at the same time mirroring the communication modes students will encounter in their future workplaces. However, not much is known about how these technologies compare with one another for facilitating different types of collaborative learning …
A New Approach For Classification And Characterization Of Voltage Dips And Swells Using 3d Polarization Ellipse Parameters, Mollah R. Alam, Kashem M. Muttaqi, Abdesselam Bouzerdoum
A New Approach For Classification And Characterization Of Voltage Dips And Swells Using 3d Polarization Ellipse Parameters, Mollah R. Alam, Kashem M. Muttaqi, Abdesselam Bouzerdoum
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents a new method for classification and characterization of voltage dips and swells in electricity networks. The proposed method exploits unique signatures and parameters of three phase voltage signals extracted from the polarization ellipse in three-dimensional (3D) co-ordinates. Five ellipse parameters, which include azimuthal angle, elevation, tilt, semi-minor axis and semi-major axis, are used to classify and characterize voltage dips and swells. Seven types of voltage dips, which include a total of 19 groups of dips incorporating different kinds of balanced (three-phase dips) and unbalanced (single-phase or double-phase) dips, are identified and successfully classified using the 3D polarization …
3d Bridge Microdosimeter: Charge Collection Study And Application To Rbe Studies In 12C Radiation Therapy, Linh T. Tran, Dale A. Prokopovich, Susanna Guatelli, Marco Petasecca, Michael L. F Lerch, Mark I. Reinhard, Anatoly B. Rosenfeld
3d Bridge Microdosimeter: Charge Collection Study And Application To Rbe Studies In 12C Radiation Therapy, Linh T. Tran, Dale A. Prokopovich, Susanna Guatelli, Marco Petasecca, Michael L. F Lerch, Mark I. Reinhard, Anatoly B. Rosenfeld
Faculty of Engineering and Information Sciences - Papers: Part A
Radiotherapy using heavy ion beam such as Carbon-ion has the advantage for the treatment of deep-seated tumour over conventional radiotherapy with X-rays due to an enhanced dose deposition in the Bragg peak (BP) at the end of the ion range. The highest dose can be deposited in the tumour with much lower doses to the surrounding healthy tissue. The Relative Biological Effectiveness (RBE) of a carbon-ion radiotherapy beam greatly depends on a depth of the target volume in the body and the nuclear fragmentation process that increases close to the BP or spread out BP (SOBP) as well as neutrons. …
Effect Of Mesh On Springback In 3d Finite Element Analysis Of Flexible Microrolling, Feijun Qu, Zhengyi Jiang, Haina Lu
Effect Of Mesh On Springback In 3d Finite Element Analysis Of Flexible Microrolling, Feijun Qu, Zhengyi Jiang, Haina Lu
Faculty of Engineering and Information Sciences - Papers: Part A
In flexible microrolling, springback in thickness direction is a critical indicator to determine the forming quality. Accurate prediction of springback is one of the significant aspects in the finite element analysis of flexible microrolling. Meshing is a step of great importance in finite element analysis of manufacturing process as it directly determines the accuracy of the FEA results as well as the requested computational time. This paper presents a numerical study on revealing the mesh effects on the accuracy of springback estimation utilising ABAQUS/Standard for modelling and analyses. Two types of meshes with six mesh sizes for each mesh type …
Evaluation Of 3d Gamma Index Calculation Implemented In Two Commercial Dosimetry Systems, Aitang Xing, Sankar Arumugam, Shrikant Deshpande, Armia George, Philip J. Vial, Lois C. Holloway, Gary Goozee
Evaluation Of 3d Gamma Index Calculation Implemented In Two Commercial Dosimetry Systems, Aitang Xing, Sankar Arumugam, Shrikant Deshpande, Armia George, Philip J. Vial, Lois C. Holloway, Gary Goozee
Faculty of Engineering and Information Sciences - Papers: Part A
3D Gamma index is one of the metrics which have been widely used for clinical routine patient specific quality assurance for IMRT, Tomotherapy and VMAT. The algorithms for calculating the 3D Gamma index using global and local methods implemented in two software tools: PTW-VeriSoft (R) r as a part of OCTIVIUS 4D dosimeter systems and 3DVH (TM) from Sun Nuclear were assessed. The Gamma index calculated by the two systems was compared with manual calculated for one data set. The Gamma pass rate calculated by the two systems was compared using 3%/3mm, 2%/2mm, 3%/2mm and 2%/3mm for two additional data …
Is A Quasi-3d Dosimeter Better Than A 2d Dosimeter For Tomotherapy Delivery Quality Assurance?, Aitang Xing, Shrikant Deshpande, Sankar Arumugam, Armia George, Lois C. Holloway, Philip J. Vial, Gary Goozee
Is A Quasi-3d Dosimeter Better Than A 2d Dosimeter For Tomotherapy Delivery Quality Assurance?, Aitang Xing, Shrikant Deshpande, Sankar Arumugam, Armia George, Lois C. Holloway, Philip J. Vial, Gary Goozee
Faculty of Engineering and Information Sciences - Papers: Part A
Delivery quality assurance (DQA) has been performed for each Tomotherapy patient either using ArcCHECK or MatriXX Evolution in our clinic since 2012. ArcCHECK is a quasi-3D dosimeter whereas MatriXX is a 2D detector. A review of DQA results was performed for all patients in the last three years, a total of 221 DQA plans. These DQA plans came from 215 patients with a variety of treatment sites including head-neck, pelvis, and chest wall. The acceptable Gamma pass rate in our clinic is over 95% using 3mm and 3% of maximum planned dose with 10% dose threshold. The mean value and …
I-125 Ropes Eye Plaque Dosimetry: Validation Of A Commercial 3d Ophthalmic Brachytherapy Treatment Planning System And Independent Dose Calculation Software With Gafchromic Ebt3 Films, Joel Poder, Stephanie Corde
I-125 Ropes Eye Plaque Dosimetry: Validation Of A Commercial 3d Ophthalmic Brachytherapy Treatment Planning System And Independent Dose Calculation Software With Gafchromic Ebt3 Films, Joel Poder, Stephanie Corde
Stéphanie Corde
Purpose: The purpose of this study was to measure the dose distributions for different Radiation Oncology Physics and Engineering Services, Australia (ROPES) type eye plaques loaded with I-125 (model 6711) seeds using GafChromic R EBT3 films, in order to verify the dose distributions in the Plaque SimulatorTM (PS) ophthalmic 3D treatment planning system. The brachytherapy module of RADCALC R was used to independently check the dose distributions calculated by PS. Correction factors were derived from the measured data to be used in PS to account for the effect of the stainless steel ROPES plaque backing on the 3D dose distribution. …
On The Security Of Text-Based 3d Captchas, Vu Duc Nguyen, Yang-Wai Chow, Willy Susilo
On The Security Of Text-Based 3d Captchas, Vu Duc Nguyen, Yang-Wai Chow, Willy Susilo
Faculty of Engineering and Information Sciences - Papers: Part A
CAPTCHAs have become a standard security mechanism that are used to deter automated abuse of online services intended for humans. However, many existing CAPTCHA schemes to date have been successfully broken. As such, a number of CAPTCHA developers have explored alternative methods of designing CAPTCHAs. 3D CAPTCHAs is a design alternative that has been proposed to overcome the limitations of traditional CAPTCHAs. These CAPTCHAs are designed to capitalize on the human visual system's natural ability to perceive 3D objects from an image. The underlying security assumption is that it is difficult for a computer program to identify the 3D content. …
Intensity Ratio Approach For 3d Profile Measurement Based On Projection Of Triangular Patterns, Zongkai Yang, Ke Wu, Jiangtao Xi, Yanguang Yu
Intensity Ratio Approach For 3d Profile Measurement Based On Projection Of Triangular Patterns, Zongkai Yang, Ke Wu, Jiangtao Xi, Yanguang Yu
Faculty of Engineering and Information Sciences - Papers: Part A
This paper presents an intensity ratio approach for 3D object profilometry measurement based on projection of triangular patterns. Compared to existing intensity ratio approaches, the proposed one is not influenced by the surface reflectivity and ambient light. Moreover, the proposed intensity ratio is point-by-point-based and thus does not suffer from the influence of surrounding points. The performance of the proposed technique has been tested and the advantages have been demonstrated by experiments. This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following …
3d Fem Analysis Of Strip Shape During Multi-Pass Rolling In A 6-High Cvc Cold Rolling Mill, Kezhi Linghu, Zhengyi Jiang, Jingwei Zhao, Fei Li, Dongbin Wei, Jianzhong Xu, Xiaoming Zhang, Xianming Zhao
3d Fem Analysis Of Strip Shape During Multi-Pass Rolling In A 6-High Cvc Cold Rolling Mill, Kezhi Linghu, Zhengyi Jiang, Jingwei Zhao, Fei Li, Dongbin Wei, Jianzhong Xu, Xiaoming Zhang, Xianming Zhao
Faculty of Engineering and Information Sciences - Papers: Part A
A 3D elastic–plastic finite element method (FEM) model of cold strip rolling for 6-high continuous variable crown (CVC) control rolling mill was developed. This model considers the boundary conditions such as accurate CVC curves, total rolling forces, total bending forces and roll shifting values. The rolling force distributions were obtained by the internal iteration processes instead of being treated as model boundary conditions. The calculated error has been significantly reduced by the developed model. Based on the rolling schedule data from a 1,850-mm CVC cold rolling mill, the absolute error between the simulated results and the actual values is obtained …
3d Printing For Development In The Global South: The 3d4d Challenge, Thomas Birtchnell, William Hoyle
3d Printing For Development In The Global South: The 3d4d Challenge, Thomas Birtchnell, William Hoyle
Faculty of Social Sciences - Papers (Archive)
Will 3D printers become as commonplace as mobile phones in the megacities or the backwaters of the Global South? Thomas Birtchnell and William Hoyle assess the development potential of this new technique for producing three-dimensional objects, which resembles the way a paper printer produces pages of text. Will 3D printing for development become a key strategy for community action against enduring material poverty? Birtchnell and Hoyle consider this question through a centrepiece case study on the UK charity techfortrade's 3D4D Challenge.
3d Mapping Using A Tof Camera For Self Programming An Industrial Robot, N Larkin, Zengxi Pan, S Van Duin, J Norrish
3d Mapping Using A Tof Camera For Self Programming An Industrial Robot, N Larkin, Zengxi Pan, S Van Duin, J Norrish
zengxi pan
Automated Offline Programing (AOLP) is a cost effective robot programming method. However, it relies on accurate CAD information of the work environment to perform optimally. Incorrect CAD data is a known source of error for AOLP systems. This paper introduces a new sensor based method of programming that extends the concept of AOLP. Using a ToF camera to map the environment, there is no reliance on CAD data. The problem of motion planning to efficiently map the environment is examined and changes to the motion planning algorithm are proposed and tested.
A Violent Debate: Could Guns Be Made At Home By 3d Printers?, Thomas Birtchnell, Robert Gorkin Iii
A Violent Debate: Could Guns Be Made At Home By 3d Printers?, Thomas Birtchnell, Robert Gorkin Iii
Faculty of Social Sciences - Papers (Archive)
Gun laws have been back in the media recently due, largely, to the horrific events at Sandy Hook Elementary School on December 14, 2012 which claimed the lives of 20 children and six adults. In response President Obama has just unveiled gun control proposals.
Additive-Free Synthesis Of 3d Porous V2o5 Hierarchical Microspheres With Enhanced Lithium Storage Properties, Chaofeng Zhang, Zhixin Chen, Zaiping Guo, Xiong Wen Lou
Additive-Free Synthesis Of 3d Porous V2o5 Hierarchical Microspheres With Enhanced Lithium Storage Properties, Chaofeng Zhang, Zhixin Chen, Zaiping Guo, Xiong Wen Lou
Faculty of Engineering and Information Sciences - Papers: Part A
A facile synthesis of novel 3D porous V2O5 hierarchical microspheres has been developed, based on an additive-free solvothermal method and subsequent calcination. Due to their unique structure, these V2O5 microspheres display a very stable capacity retention of 130 mA h g (1) over 100 cycles at a current rate of 0.5 C, and show excellent rate capability with a capacity of 105 mA h g (1) even at the 30 C rate. The good electrochemical performance suggests that this unique hierarchical V2O5 material could be a promising candidate as a cathode material for lithium-ion batteries.
A Composite Quality-Guided Phase Unwrapping Algorithm For Fast 3d Profile Measurement, Ke Chen, Jiangtao Xi, Yanguang Yu, Limei Song
A Composite Quality-Guided Phase Unwrapping Algorithm For Fast 3d Profile Measurement, Ke Chen, Jiangtao Xi, Yanguang Yu, Limei Song
Faculty of Engineering and Information Sciences - Papers: Part A
Fringe pattern profilometry (FPP) is one of the most promising 3D profile measurement techniques, which has been widely applied in many areas. A challenge problem associated with FPP is the unwrapping of wrapped phase maps resulted from complex object surface shapes. Although existing quality-guided phase unwrapping algorithms are able to solve such a problem, they are usually extensively computational expensive and not able to be applied to fast 3D measurement scenarios. This paper proposes a new quality-guided phase unwrapping algorithm with higher computational efficiency than the conventional ones. In the proposed method, a threshold of quality value is used to …