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"title": "2022 IEEE 22nd International Conference on Bioinformatics and Bioengineering (BIBE)",
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"article": {
"id": "1J6hCI5IlWM",
"doi": "10.1109/BIBE55377.2022.00039",
"title": "3D printing of bioceramic/polycaprolactone composite scaffolds for bone tissue engineering",
"normalizedTitle": "3D printing of bioceramic/polycaprolactone composite scaffolds for bone tissue engineering",
"abstract": "Despite the emergence of three-dimensional printing techniques that has been considered useful for promoting the osteogeneicity through the precise fabrication of patient-specific bone grafts with porous structures, which could favor the ingrowth of neo-bone tissues, the lack of suitable biomaterials with appropriate printability is still an obstacle that needs to be addressed. Thermoplastic polymer incorporated with osteoconductive bioceramics was a suitable biomaterial regarding to its good printability, biocompatibility and biodegradability. Unfortunately, the hydrophobic nature of synthetic polymers failed to form stable interfacial interactions with hydrophilic bioceramics, and hence restricted its uses in the application of bone tissue engineering. Thus, the aim of this study was to assess the reinforcement effect of polydopamine on the interfacial interaction between the thermoplastic polymer/bioceramic composite. The mechanical strength, hydrophilicity, and degradability of the composite porous scaffolds fabricated by a fused deposition modeling (FDM) based 3D printer were assessed. Moreover, the proliferation and differentiation of mesenchymal stem cells cultured on the scaffolds were examined. The results revealed that the compressive modulus of the polydopamine-incorporated composite scaffolds was strengthened by 67-130% compared to the unmodified composite scaffold. Additionally, results obtained from in vitro cell culture experiments indicated that the presence of polydopamine could also favor the proliferation, alkaline phosphatase activity, and calcium deposition of mesenchymal stem cells. The proposed route could be considered as a candidate strategy for developing three-dimensional printable composite materials for applications of bone regeneration.",
"abstracts": [
{
"abstractType": "Regular",
"content": "Despite the emergence of three-dimensional printing techniques that has been considered useful for promoting the osteogeneicity through the precise fabrication of patient-specific bone grafts with porous structures, which could favor the ingrowth of neo-bone tissues, the lack of suitable biomaterials with appropriate printability is still an obstacle that needs to be addressed. Thermoplastic polymer incorporated with osteoconductive bioceramics was a suitable biomaterial regarding to its good printability, biocompatibility and biodegradability. Unfortunately, the hydrophobic nature of synthetic polymers failed to form stable interfacial interactions with hydrophilic bioceramics, and hence restricted its uses in the application of bone tissue engineering. Thus, the aim of this study was to assess the reinforcement effect of polydopamine on the interfacial interaction between the thermoplastic polymer/bioceramic composite. The mechanical strength, hydrophilicity, and degradability of the composite porous scaffolds fabricated by a fused deposition modeling (FDM) based 3D printer were assessed. Moreover, the proliferation and differentiation of mesenchymal stem cells cultured on the scaffolds were examined. The results revealed that the compressive modulus of the polydopamine-incorporated composite scaffolds was strengthened by 67-130% compared to the unmodified composite scaffold. Additionally, results obtained from in vitro cell culture experiments indicated that the presence of polydopamine could also favor the proliferation, alkaline phosphatase activity, and calcium deposition of mesenchymal stem cells. The proposed route could be considered as a candidate strategy for developing three-dimensional printable composite materials for applications of bone regeneration.",
"__typename": "ArticleAbstractType"
}
],
"normalizedAbstract": "Despite the emergence of three-dimensional printing techniques that has been considered useful for promoting the osteogeneicity through the precise fabrication of patient-specific bone grafts with porous structures, which could favor the ingrowth of neo-bone tissues, the lack of suitable biomaterials with appropriate printability is still an obstacle that needs to be addressed. Thermoplastic polymer incorporated with osteoconductive bioceramics was a suitable biomaterial regarding to its good printability, biocompatibility and biodegradability. Unfortunately, the hydrophobic nature of synthetic polymers failed to form stable interfacial interactions with hydrophilic bioceramics, and hence restricted its uses in the application of bone tissue engineering. Thus, the aim of this study was to assess the reinforcement effect of polydopamine on the interfacial interaction between the thermoplastic polymer/bioceramic composite. The mechanical strength, hydrophilicity, and degradability of the composite porous scaffolds fabricated by a fused deposition modeling (FDM) based 3D printer were assessed. Moreover, the proliferation and differentiation of mesenchymal stem cells cultured on the scaffolds were examined. The results revealed that the compressive modulus of the polydopamine-incorporated composite scaffolds was strengthened by 67-130% compared to the unmodified composite scaffold. Additionally, results obtained from in vitro cell culture experiments indicated that the presence of polydopamine could also favor the proliferation, alkaline phosphatase activity, and calcium deposition of mesenchymal stem cells. The proposed route could be considered as a candidate strategy for developing three-dimensional printable composite materials for applications of bone regeneration.",
"fno": "848700a142",
"keywords": [
"Bioceramics",
"Biodegradable Materials",
"Biomechanics",
"Bone",
"Calcium Compounds",
"Cellular Biophysics",
"Composite Materials",
"Filled Polymers",
"Hydrophilicity",
"Mechanical Strength",
"Polymers",
"Porous Materials",
"Three Dimensional Printing",
"Tissue Engineering",
"Bone Regeneration",
"Bone Tissue Engineering",
"Composite Porous Scaffolds",
"Good Printability",
"Hydrophilic Bioceramics",
"In Vitro Cell Culture Experiments",
"Interfacial Interaction",
"Mesenchymal Stem Cells",
"Neo Bone Tissues",
"Osteoconductive Bioceramics",
"Patient Specific Bone Grafts",
"Polydopamine Incorporated Composite Scaffolds",
"Porous Structures",
"Stable Interfacial Interactions",
"Suitable Biomaterial",
"Synthetic Polymers",
"Thermoplastic Polymer",
"Three Dimensional Printable Composite Materials",
"Three Dimensional Printing Techniques",
"Unmodified Composite Scaffold",
"Solid Modeling",
"Bone Tissue",
"Three Dimensional Displays",
"Stem Cells",
"Bioceramics",
"Three Dimensional Printing",
"Bones",
"Bone Tissue Engineering",
"Bioceramics",
"Polydopamine",
"3 D Printing",
"Scaffolds"
],
"authors": [
{
"affiliation": "School of Dentistry, China Medical University,Taichung,Taiwan",
"fullName": "Ming-You Shie",
"givenName": "Ming-You",
"surname": "Shie",
"__typename": "ArticleAuthorType"
},
{
"affiliation": "Graduated Institute of Dental and Oral Health Industry, China Medical University,Taichung,Taiwan",
"fullName": "Chun-Che Lai",
"givenName": "Chun-Che",
"surname": "Lai",
"__typename": "ArticleAuthorType"
},
{
"affiliation": "Asia University,Department of Bioinformatics and Medical Engineering,Taichung,Taiwan",
"fullName": "Po-Han Chiang",
"givenName": "Po-Han",
"surname": "Chiang",
"__typename": "ArticleAuthorType"
},
{
"affiliation": "Asia University,Department of Bioinformatics and Medical Engineering,Taichung,Taiwan",
"fullName": "Han-Chi Chung",
"givenName": "Han-Chi",
"surname": "Chung",
"__typename": "ArticleAuthorType"
},
{
"affiliation": "High Performance Materials Institute for xD Printing, Asia University,Department of Bioinformatics and Medical Engineering,Taichung,Taiwan",
"fullName": "Chia-Che Ho",
"givenName": "Chia-Che",
"surname": "Ho",
"__typename": "ArticleAuthorType"
}
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"pubDate": "2022-11-01T00:00:00",
"pubType": "proceedings",
"pages": "142-145",
"year": "2022",
"issn": null,
"isbn": "978-1-6654-8487-9",
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"proceeding": {
"id": "1kRSycg2688",
"title": "2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME)",
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"article": {
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"doi": "10.1109/ICEDME50972.2020.00077",
"title": "Effect of internal and external porous structure design on stress distribution of implant bridge: A Finite element analysis",
"normalizedTitle": "Effect of internal and external porous structure design on stress distribution of implant bridge: A Finite element analysis",
"abstract": "In this paper, three different types of solid implant bridge (SIB), internal porous implant bridge (IPIB) and external porous implant bridge (EPIB) were modeled to investigate its static mechanical performance. FEA was used to calculate the stress distribution in implant bridges. The 200 N loading was applied to simulate occlusal function. The stress distribution occurred at the gingival surface above the interface in all the groups. The peak stress of IPIB was lower than SIB and EPIB. Further, two porous cylinders with external and internal pore structure were precisely fabricated to better understand its structural responses, stress distribution patterns and micromotions. Results showed that the peak stress and total deformation of internal porous cylinder was much lower than external porous cylinder. This study indicated that IPIB design maintained the better geometric characteristics and exhibited better stress distribution than EPIB design.",
"abstracts": [
{
"abstractType": "Regular",
"content": "In this paper, three different types of solid implant bridge (SIB), internal porous implant bridge (IPIB) and external porous implant bridge (EPIB) were modeled to investigate its static mechanical performance. FEA was used to calculate the stress distribution in implant bridges. The 200 N loading was applied to simulate occlusal function. The stress distribution occurred at the gingival surface above the interface in all the groups. The peak stress of IPIB was lower than SIB and EPIB. Further, two porous cylinders with external and internal pore structure were precisely fabricated to better understand its structural responses, stress distribution patterns and micromotions. Results showed that the peak stress and total deformation of internal porous cylinder was much lower than external porous cylinder. This study indicated that IPIB design maintained the better geometric characteristics and exhibited better stress distribution than EPIB design.",
"__typename": "ArticleAbstractType"
}
],
"normalizedAbstract": "In this paper, three different types of solid implant bridge (SIB), internal porous implant bridge (IPIB) and external porous implant bridge (EPIB) were modeled to investigate its static mechanical performance. FEA was used to calculate the stress distribution in implant bridges. The 200 N loading was applied to simulate occlusal function. The stress distribution occurred at the gingival surface above the interface in all the groups. The peak stress of IPIB was lower than SIB and EPIB. Further, two porous cylinders with external and internal pore structure were precisely fabricated to better understand its structural responses, stress distribution patterns and micromotions. Results showed that the peak stress and total deformation of internal porous cylinder was much lower than external porous cylinder. This study indicated that IPIB design maintained the better geometric characteristics and exhibited better stress distribution than EPIB design.",
"fno": "09122190",
"keywords": [
"Biomedical Materials",
"Deformation",
"Dentistry",
"Finite Element Analysis",
"Porous Materials",
"Prosthetics",
"Internal Porous Implant Bridge",
"External Porous Implant Bridge",
"Peak Stress",
"External Pore Structure",
"Internal Pore Structure",
"Stress Distribution Patterns",
"Micromotions",
"Internal Porous Cylinder",
"External Porous Cylinder",
"IPIB Design",
"Finite Element Analysis",
"Solid Implant Bridge",
"Deformation",
"Gingival Surface",
"Bridges",
"Performance Evaluation",
"Solid Modeling",
"Loading",
"Implants",
"Solids",
"Mechanical Engineering",
"Internal And External Porous Implant Bridge",
"Static Mechanical Performance",
"FEA",
"Stress Distribution Patterns"
],
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{
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"fullName": "Jinyang Zhang",
"givenName": "Jinyang",
"surname": "Zhang",
"__typename": "ArticleAuthorType"
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{
"affiliation": "Foshan Angels Biotechnology Co., Ltd.,China,528200",
"fullName": "Xiao Zhang",
"givenName": "Xiao",
"surname": "Zhang",
"__typename": "ArticleAuthorType"
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{
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"givenName": "Xue",
"surname": "Peng",
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{
"affiliation": "Foshan Aten Dental Clinic,China,528200",
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"surname": "Zhang",
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"givenName": "Xianshuai",
"surname": "Chen",
"__typename": "ArticleAuthorType"
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"pubDate": "2020-05-01T00:00:00",
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"pages": "305-309",
"year": "2020",
"issn": null,
"isbn": "978-1-7281-8145-5",
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{
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"acronym": "mlise",
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"normalizedTitle": "Application of Minimal Curved Surface in the Design and Preparation of Bone Scaffold",
"abstract": "A bionic scaffold with a honeycomb structure is beneficial to the proliferation and differentiation of bone cells, and can increase the probability of successful transplantation. The mechanical strength of the bones of various body parts is also very different, so the standards for the mechanical properties of the bone scaffolds are different, and it is necessary to further analyze the difference in the mechanical strength of each hole-shaped bone scaffold to provide a theoretical basis for the study of the bionic bone scaffold. This paper compares the mechanical strength of three TPMS unit models. The stress distribution at the upper edge and intersection of the D unit model is concentrated. The I-WP unit cell model has local stress concentration and poor deformability. The stress distribution of the P element is relatively uniform, the energy absorption capacity is good, the deformability is good, the elasticity is good, and the model surface is smooth without crossing boundaries. The impact of the two construction methods on the mechanical properties is compared. The PLA solid P structure has a low stress value and the overall distribution is more uniform, which causes weaker interference to the cells implanted in the stent. The double P structure has stronger concentrated stress in the unit. Especially the stress value at the corners increased significantly. The double P structure of PLA material produces a large amount of deformation and is prone to large extrusion. However, the deformation of the solid P structure of PLA material is weakened, the total displacement of each node changes more uniformly and the displacement is low, and the elastic performance is good. The P-hole stent has excellent performance under compression, tensile, and shear forces, and can withstand large axial forces. The shape of the curved surface and the mechanical strength of the bracket can be changed by adjusting the structural parameters. The porous stent is coated with a film to obtain a PLA porous stent that has been surface-modified by hydroxyapatite. The mechanical strength of the HAP-PLA stent is relatively high, so the HAP coating can reinforce the stent.",
"abstracts": [
{
"abstractType": "Regular",
"content": "A bionic scaffold with a honeycomb structure is beneficial to the proliferation and differentiation of bone cells, and can increase the probability of successful transplantation. The mechanical strength of the bones of various body parts is also very different, so the standards for the mechanical properties of the bone scaffolds are different, and it is necessary to further analyze the difference in the mechanical strength of each hole-shaped bone scaffold to provide a theoretical basis for the study of the bionic bone scaffold. This paper compares the mechanical strength of three TPMS unit models. The stress distribution at the upper edge and intersection of the D unit model is concentrated. The I-WP unit cell model has local stress concentration and poor deformability. The stress distribution of the P element is relatively uniform, the energy absorption capacity is good, the deformability is good, the elasticity is good, and the model surface is smooth without crossing boundaries. The impact of the two construction methods on the mechanical properties is compared. The PLA solid P structure has a low stress value and the overall distribution is more uniform, which causes weaker interference to the cells implanted in the stent. The double P structure has stronger concentrated stress in the unit. Especially the stress value at the corners increased significantly. The double P structure of PLA material produces a large amount of deformation and is prone to large extrusion. However, the deformation of the solid P structure of PLA material is weakened, the total displacement of each node changes more uniformly and the displacement is low, and the elastic performance is good. The P-hole stent has excellent performance under compression, tensile, and shear forces, and can withstand large axial forces. The shape of the curved surface and the mechanical strength of the bracket can be changed by adjusting the structural parameters. The porous stent is coated with a film to obtain a PLA porous stent that has been surface-modified by hydroxyapatite. The mechanical strength of the HAP-PLA stent is relatively high, so the HAP coating can reinforce the stent.",
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"normalizedAbstract": "A bionic scaffold with a honeycomb structure is beneficial to the proliferation and differentiation of bone cells, and can increase the probability of successful transplantation. The mechanical strength of the bones of various body parts is also very different, so the standards for the mechanical properties of the bone scaffolds are different, and it is necessary to further analyze the difference in the mechanical strength of each hole-shaped bone scaffold to provide a theoretical basis for the study of the bionic bone scaffold. This paper compares the mechanical strength of three TPMS unit models. The stress distribution at the upper edge and intersection of the D unit model is concentrated. The I-WP unit cell model has local stress concentration and poor deformability. The stress distribution of the P element is relatively uniform, the energy absorption capacity is good, the deformability is good, the elasticity is good, and the model surface is smooth without crossing boundaries. The impact of the two construction methods on the mechanical properties is compared. The PLA solid P structure has a low stress value and the overall distribution is more uniform, which causes weaker interference to the cells implanted in the stent. The double P structure has stronger concentrated stress in the unit. Especially the stress value at the corners increased significantly. The double P structure of PLA material produces a large amount of deformation and is prone to large extrusion. However, the deformation of the solid P structure of PLA material is weakened, the total displacement of each node changes more uniformly and the displacement is low, and the elastic performance is good. The P-hole stent has excellent performance under compression, tensile, and shear forces, and can withstand large axial forces. The shape of the curved surface and the mechanical strength of the bracket can be changed by adjusting the structural parameters. The porous stent is coated with a film to obtain a PLA porous stent that has been surface-modified by hydroxyapatite. The mechanical strength of the HAP-PLA stent is relatively high, so the HAP coating can reinforce the stent.",
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"keywords": [
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"Bone",
"Cellular Biophysics",
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"Elasticity",
"Extrusion",
"Honeycomb Structures",
"Mechanical Strength",
"Porous Materials",
"Stents",
"Tensile Strength",
"Bionic Scaffold",
"Honeycomb Structure",
"Bone Cells",
"Mechanical Strength",
"Mechanical Properties",
"Hole Shaped Bone Scaffold",
"Bionic Bone Scaffold",
"TPMS Unit Models",
"Stress Distribution",
"D Unit Model",
"I WP Unit Cell Model",
"Local Stress Concentration",
"PLA Solid P Structure",
"Concentrated Stress",
"PLA Material",
"Deformable Models",
"Shape",
"Biological System Modeling",
"Programmable Logic Arrays",
"Bones",
"Structural Engineering",
"Coatings",
"TPMS",
"Bionic Bone Stents",
"CAE Analysis"
],
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{
"affiliation": "Beijing University of Chemical Technology, BUCT,Beijing,China",
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"affiliation": "Xidian University,Xian,China",
"fullName": "Yuheng Wang",
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"abstract": "Microarrays are a relatively new, high-throughput data acquisition technology for investigating biological phenomena at the micro-level. One of the more common procedures for microarray experimentation is that of the microarray time-course experiment. The product of microarray time-course experiments is time-series data, which subject to proper analysis has the potential to have significant impact on the diagnosis, treatment, and prevention of diseases. While existing information visualization techniques go some way to making microarray time-series data more manageable, requirements analysis has revealed significant limitations. The main finding was that users were unable to uncover and quantify common changes in value over a specified time-period. This paper describes a novel technique that provides this functionality by allowing the user to visually formulate and modify measurable queries with separate time-period and condition components. These visual queries are supported by the combination of a traditional value against time graph representation of the data with a complementary scatter-plot representation of a specified time-period. The multiple views of the visualization are coordinated so that the user can formulate and modify queries with rapid reversible display of query results in the traditional value against time graph format.",
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"content": "Microarrays are a relatively new, high-throughput data acquisition technology for investigating biological phenomena at the micro-level. One of the more common procedures for microarray experimentation is that of the microarray time-course experiment. The product of microarray time-course experiments is time-series data, which subject to proper analysis has the potential to have significant impact on the diagnosis, treatment, and prevention of diseases. While existing information visualization techniques go some way to making microarray time-series data more manageable, requirements analysis has revealed significant limitations. The main finding was that users were unable to uncover and quantify common changes in value over a specified time-period. This paper describes a novel technique that provides this functionality by allowing the user to visually formulate and modify measurable queries with separate time-period and condition components. These visual queries are supported by the combination of a traditional value against time graph representation of the data with a complementary scatter-plot representation of a specified time-period. The multiple views of the visualization are coordinated so that the user can formulate and modify queries with rapid reversible display of query results in the traditional value against time graph format.",
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"affiliation": "Napier University",
"fullName": "Paul Craig",
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{
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"fullName": "Jessie Kennedy",
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"title": "Multi-Layer Nested Scatter Plot a Data Wrangling Method for Correlated Multi-Channel Time Series Signals",
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"abstract": "Graphical representation of correlated multi-channel time series signal is studied in this paper. With the proposed multi-layer nested scatter plot (NSP), we can compress multichannel time series signals into static sized data and can obtain advantages inherent in scatter plots.",
"abstracts": [
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"affiliation": "Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH, Smart Convergence Group, Saarbrücken, Germany",
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"affiliation": "Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH, Smart Convergence Group, Saarbrücken, Germany",
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"affiliation": "Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH, Smart Convergence Group, Saarbrücken, Germany",
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"abstract": "A technique based adaptive neuro-fuzzy inference system (ANFIS) has been applied into short-term traffic flow prediction. Considering random factors, a new forecast model is presented based on the dynamic traffic flow data. Firstly the actual observations were operated in traffic flow and vehicle speed on Yanan east road tunnel, then the correlation analyses were calculated for traffic flow and vehicle speed in different driveways. The results shown, the correlation of traffic flow and vehicle speed was unconspicuous, but the traffic flows of the same direction in different driveways were correlated significantly. Finally according to the statistic results, some suggestions were presented.",
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"content": "A technique based adaptive neuro-fuzzy inference system (ANFIS) has been applied into short-term traffic flow prediction. Considering random factors, a new forecast model is presented based on the dynamic traffic flow data. Firstly the actual observations were operated in traffic flow and vehicle speed on Yanan east road tunnel, then the correlation analyses were calculated for traffic flow and vehicle speed in different driveways. The results shown, the correlation of traffic flow and vehicle speed was unconspicuous, but the traffic flows of the same direction in different driveways were correlated significantly. Finally according to the statistic results, some suggestions were presented.",
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"abstract": "The facial texture variation is the key factor for realistic expression synthesis. It always changed with facial motion under some illumination. In this paper, we propose a realistic facial expression texture driving model based on the support vector regression and MPEG-4. It can learn and recall the regression relationship between facial animation parameters and the parameters of expression ratio image through support vector regression method. First, We can get the parameter set of expression ratio image and the eigenERI space by principle component analysis method, that generate reasonable ratio image. Then, a life-like facial animation can be synthesized quickly and effectively with the support vector regression mapping. In our experiment, it not only captures subtle changes in the variation illumination, but also can synthesis realistic facial expression in bad environment.",
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"title": "2009 11th IEEE International Symposium on Multimedia",
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"title": "A 3-D Traffic Animation System with Storm Surge Response",
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"abstract": "This paper presents a 3D traffic animation system that provides features of vehicle interaction and storm surge response to emulate realistic scenarios in a hurricane affected area. The proposed system constructs road objects based on a series of line segments. Vehicles on the roads are animated by keeping them coherent with the direction of the road segment and adjusting their speeds with respect to one another. The vehicle speed is controlled based upon a collision-circumventing policy and they automatically respond to flood water caused by a storm surge. The system can automatically plant lamp posts along the roads, which also respond to surge flooding. An implementation conducted with the 3D scenes on a couple of south Florida's surge-susceptible areas demonstrates the system's excellence in animating real traffic scenes and impacts of storm surge on coastal regions.",
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"fullName": "Kasturi Chatterjee",
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"doi": "10.1109/ICDCS.2012.31",
"title": "NEAT: Road Network Aware Trajectory Clustering",
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"abstract": "Mining trajectory data has been gaining significant interest in recent years. However, existing approaches to trajectory clustering are mainly based on density and Euclidean distance measures. We argue that when the utility of spatial clustering of mobile object trajectories is targeted at road network aware location based applications, density and Euclidean distance are no longer the effective measures. This is because traffic flows in a road network and the flow-based density characterization become important factors for finding interesting trajectory clusters of mobile objects travelling in road networks. In this paper, we propose NEAT-a road network aware approach for fast and effective clustering of spatial trajectories of mobile objects travelling in road networks. Our method takes into account the physical constraints of the road network, the network proximity and the traffic flows among consecutive road segments to organize trajectories into spatial clusters. The clusters discovered by NEAT are groups of sub-trajectories which describe both dense and highly continuous traffic flows of mobile objects. We perform extensive experiments with mobility traces generated using different scales of real road network maps. Our experimental results demonstrate that the NEAT approach is highly accurate and runs orders of magnitude faster than existing density-based trajectory clustering approaches.",
"abstracts": [
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"content": "Mining trajectory data has been gaining significant interest in recent years. However, existing approaches to trajectory clustering are mainly based on density and Euclidean distance measures. We argue that when the utility of spatial clustering of mobile object trajectories is targeted at road network aware location based applications, density and Euclidean distance are no longer the effective measures. This is because traffic flows in a road network and the flow-based density characterization become important factors for finding interesting trajectory clusters of mobile objects travelling in road networks. In this paper, we propose NEAT-a road network aware approach for fast and effective clustering of spatial trajectories of mobile objects travelling in road networks. Our method takes into account the physical constraints of the road network, the network proximity and the traffic flows among consecutive road segments to organize trajectories into spatial clusters. The clusters discovered by NEAT are groups of sub-trajectories which describe both dense and highly continuous traffic flows of mobile objects. We perform extensive experiments with mobility traces generated using different scales of real road network maps. Our experimental results demonstrate that the NEAT approach is highly accurate and runs orders of magnitude faster than existing density-based trajectory clustering approaches.",
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"fno": "4685a142",
"keywords": [
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"fullName": "Binh Han",
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"abstract": "This study aims to explore microstructure and elementary variation of fly ash from one Shanghai municipal solid waste incineration (MSWI) plant on the one hand and analyze leaching toxicity of Zn, Pb, Cd and Cu during heating process. SEM-EDS was performed on fly ash of room temperature and those sintered at 700□, 800□, 90□0, 1,000□, and 1,100□ respectively, and leaching toxicity of four heavy metals analyzed by horizontal vibration extraction procedure (HVEP). It is found that structure of fly ash is strengthened with increase of temperature, which is conducive to stabilization of heavy metals. Crystal content increases from room temperature to 800□ and then decreases in the heating process, while content of glass phases has a reverse trend. Ca and O content variation has a similar trend, while Cl has a reverse trend with them. Their leaching toxicity in fly ash sintered at temperatures over 900□ is lower than the limit value described in “Identification Standard of Hazardous Waste—Identification of Leaching Toxicity”. Finally, 1000□ is recommended to treat MSWI fly ash.",
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{
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"content": "This study aims to explore microstructure and elementary variation of fly ash from one Shanghai municipal solid waste incineration (MSWI) plant on the one hand and analyze leaching toxicity of Zn, Pb, Cd and Cu during heating process. SEM-EDS was performed on fly ash of room temperature and those sintered at 700□, 800□, 90□0, 1,000□, and 1,100□ respectively, and leaching toxicity of four heavy metals analyzed by horizontal vibration extraction procedure (HVEP). It is found that structure of fly ash is strengthened with increase of temperature, which is conducive to stabilization of heavy metals. Crystal content increases from room temperature to 800□ and then decreases in the heating process, while content of glass phases has a reverse trend. Ca and O content variation has a similar trend, while Cl has a reverse trend with them. Their leaching toxicity in fly ash sintered at temperatures over 900□ is lower than the limit value described in “Identification Standard of Hazardous Waste—Identification of Leaching Toxicity”. Finally, 1000□ is recommended to treat MSWI fly ash.",
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"normalizedAbstract": "This study aims to explore microstructure and elementary variation of fly ash from one Shanghai municipal solid waste incineration (MSWI) plant on the one hand and analyze leaching toxicity of Zn, Pb, Cd and Cu during heating process. SEM-EDS was performed on fly ash of room temperature and those sintered at 700□, 800□, 90□0, 1,000□, and 1,100□ respectively, and leaching toxicity of four heavy metals analyzed by horizontal vibration extraction procedure (HVEP). It is found that structure of fly ash is strengthened with increase of temperature, which is conducive to stabilization of heavy metals. Crystal content increases from room temperature to 800□ and then decreases in the heating process, while content of glass phases has a reverse trend. Ca and O content variation has a similar trend, while Cl has a reverse trend with them. Their leaching toxicity in fly ash sintered at temperatures over 900□ is lower than the limit value described in “Identification Standard of Hazardous Waste—Identification of Leaching Toxicity”. Finally, 1000□ is recommended to treat MSWI fly ash.",
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"Fly Ash",
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"Incineration",
"Industrial Plants",
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"Scanning Electron Microscopy",
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"Vibrations",
"X Ray Chemical Analysis",
"SEM EDS Analysis",
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"Shanghai",
"Municipal Solid Waste Incineration Plant",
"Heating Process",
"Leaching Toxicity",
"Heavy Metals",
"Horizontal Vibration Extraction Procedure",
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"Incineration",
"Waste Heat",
"Leaching",
"Temperature",
"Microstructure",
"Zinc",
"Performance Analysis",
"Heating",
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"Leaching Toxicity",
"SEM EDS Analysis",
"Microstructure"
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{
"affiliation": "Sch. of Chem. & Environ. Eng., Shanghai Inst. of Technol., Shanghai, China",
"fullName": "Zhang Haiying",
"givenName": "Zhang",
"surname": "Haiying",
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{
"affiliation": "State Key Lab. of Pollution Control & Resource Reuse, Tongji Univ., Shanghai, China",
"fullName": "Zhao Youcai",
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"title": "2013 18th International Conference on Computer Games: AI, Animation, Mobile, Interactive Multimedia, Educational & Serious Games (CGAMES)",
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"abstract": "Objects in 3D games are typically shell models, a polygon mesh representing the shell or skin of the object. While emulation of the behaviour of shell models under combustion is sufficient for many game applications and is fairly well studied, solid objects do in fact burn rather differently than shell objects. We show how to manipulate shell models so that they appear to burn as solid models. Since our burning objects will be only a small part of a video game, computation speed is of the essence. We demonstrate that our method uses only a fraction of the computational power available by implementing the computation on a modest GPU using CUDA.",
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"normalizedAbstract": "Objects in 3D games are typically shell models, a polygon mesh representing the shell or skin of the object. While emulation of the behaviour of shell models under combustion is sufficient for many game applications and is fairly well studied, solid objects do in fact burn rather differently than shell objects. We show how to manipulate shell models so that they appear to burn as solid models. Since our burning objects will be only a small part of a video game, computation speed is of the essence. We demonstrate that our method uses only a fraction of the computational power available by implementing the computation on a modest GPU using CUDA.",
"fno": "06632621",
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"title": "2014 7th International Conference on Intelligent Computation Technology and Automation (ICICTA)",
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"article": {
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"title": "Experimental Study on Total Flooding Extinguishing Test by New Ultra-fine Water Mist Fire Extinguisher Extinguishing Combustion of Paper",
"normalizedTitle": "Experimental Study on Total Flooding Extinguishing Test by New Ultra-fine Water Mist Fire Extinguisher Extinguishing Combustion of Paper",
"abstract": "This paper introduced a new kind of ultra-fine water mist extinguisher, and study on total flooding extinguishing test of ultra-fine water mist extinguishing combustion of paper in confined space with the size of 2.4m×2.4m×3.5m. The results showed that the ultra-fine water mist extinguisher with the mist flux of 500ml/min was effectively in extinguishing combustion of paper in confined space. Therefore, the device can be used to put out fire in archives room.",
"abstracts": [
{
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"content": "This paper introduced a new kind of ultra-fine water mist extinguisher, and study on total flooding extinguishing test of ultra-fine water mist extinguishing combustion of paper in confined space with the size of 2.4m×2.4m×3.5m. The results showed that the ultra-fine water mist extinguisher with the mist flux of 500ml/min was effectively in extinguishing combustion of paper in confined space. Therefore, the device can be used to put out fire in archives room.",
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"fno": "6636a252",
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"affiliation": null,
"fullName": "De-Ming Zhu",
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"fullName": "Jian-Yong Liu",
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"affiliation": null,
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"abstract": "With the shrinking of structure size, the pressure surge, oscillation and rapid heat transfer process in the transient ignition of SRM (solid rocket motor) become more and more complex. The multi physical field coupling among combustion, flow and thermal structure in the internal multi flow area of the micro motor makes a challenge and safety to the stability of the motor. In this paper, the ignition process of a micro solid rocket motor with multiple flow areas in the combustion chamber is numerically simulated based on the N-S equation and k-e turbulence model. Motor simulation with the practical work under the condition of the initial stage of simulation curves are in good agreement with the experimental curve. The simulated ignition sequence of the inside and outside surfaces of the main charge also explains the rising-falling trend of the pressure in the combustion chamber during the balancing work of the motor. Through the numerical simulation, the quantitative and qualitative analysis of the ignition section is carried out to obtain the flow field state of the combustion chamber in three typical periods of ignition. By analyzing the gas flow of the monitoring point at all times, the working process of the ignition section is predicted with high precision. Through the analysis of the transient physical parameters, more reference and selection basis and safety guarantee are provided for the reasonable design of the motor.",
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{
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"content": "With the shrinking of structure size, the pressure surge, oscillation and rapid heat transfer process in the transient ignition of SRM (solid rocket motor) become more and more complex. The multi physical field coupling among combustion, flow and thermal structure in the internal multi flow area of the micro motor makes a challenge and safety to the stability of the motor. In this paper, the ignition process of a micro solid rocket motor with multiple flow areas in the combustion chamber is numerically simulated based on the N-S equation and k-e turbulence model. Motor simulation with the practical work under the condition of the initial stage of simulation curves are in good agreement with the experimental curve. The simulated ignition sequence of the inside and outside surfaces of the main charge also explains the rising-falling trend of the pressure in the combustion chamber during the balancing work of the motor. Through the numerical simulation, the quantitative and qualitative analysis of the ignition section is carried out to obtain the flow field state of the combustion chamber in three typical periods of ignition. By analyzing the gas flow of the monitoring point at all times, the working process of the ignition section is predicted with high precision. Through the analysis of the transient physical parameters, more reference and selection basis and safety guarantee are provided for the reasonable design of the motor.",
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"affiliation": "China Academy of Launch Vehicle Technology, China",
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"affiliation": "Northwestern Polytechnical University, China",
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{
"affiliation": "Northwestern Polytechnical University, China",
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"content": "One method was proposed for recovering structure model of the object by using monocular vision equipment. The fundamental idea can be summed up as sequential reconstruction under hierarchical method. First of all, by dividing the single observation path into multiple, more details of structure can be observed. After outliers removing, these sequences can be aligned with the referenced one which can be specified by users. Finally, after surface fitting, depth map of the object can be densely retrieved. The experiment shows that the depth map can be retrieved much densely than traditional method from the same dataset.",
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"abstract": "Online shopping systems nowadays are constructed with the capability of displaying text and 2D images to the customers. Although it is enough for the purpose of exchanging product information between sellers and buyers, the plain and dull shopping experience is not really appreciated. With the recent advancement of 3D technologies in the web environment, we can enhance such an experience with 3D visualized products. However, the creation of 3D content is a major challenge in realizing a 3D enabled shopping system. The high cost of 3D scanning devices inhibits the popularity of scanned 3D objects on the web and related applications. Therefore, one major targets of our system is to provide a low cost 3D scanning solution suitable for naïve web users. We exploit the Kinect device, which is a low-cost and fast depth sensor with color, in the development of a 3D scanning system. With an integration of a marker-based tracking system to estimate the current view angle of Kinect sensor during depth acquisition, the obtained depth data can reconstruct the 3D model by a preliminary coordinate frame alignment and a registration of all point clouds. The whole process of capturing, storing, uploading, compressing and displaying 3D models of products on web application is done with minimal user involvements. The introduction of attractive and fashionable 3D product on the web will gain significant attention from customers and evolve habits and traditions in e-commerce, especially for C2C business, in which sellers can promote their goods for sale with scanned 3D models.",
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"content": "Online shopping systems nowadays are constructed with the capability of displaying text and 2D images to the customers. Although it is enough for the purpose of exchanging product information between sellers and buyers, the plain and dull shopping experience is not really appreciated. With the recent advancement of 3D technologies in the web environment, we can enhance such an experience with 3D visualized products. However, the creation of 3D content is a major challenge in realizing a 3D enabled shopping system. The high cost of 3D scanning devices inhibits the popularity of scanned 3D objects on the web and related applications. Therefore, one major targets of our system is to provide a low cost 3D scanning solution suitable for naïve web users. We exploit the Kinect device, which is a low-cost and fast depth sensor with color, in the development of a 3D scanning system. With an integration of a marker-based tracking system to estimate the current view angle of Kinect sensor during depth acquisition, the obtained depth data can reconstruct the 3D model by a preliminary coordinate frame alignment and a registration of all point clouds. The whole process of capturing, storing, uploading, compressing and displaying 3D models of products on web application is done with minimal user involvements. The introduction of attractive and fashionable 3D product on the web will gain significant attention from customers and evolve habits and traditions in e-commerce, especially for C2C business, in which sellers can promote their goods for sale with scanned 3D models.",
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"normalizedAbstract": "Online shopping systems nowadays are constructed with the capability of displaying text and 2D images to the customers. Although it is enough for the purpose of exchanging product information between sellers and buyers, the plain and dull shopping experience is not really appreciated. With the recent advancement of 3D technologies in the web environment, we can enhance such an experience with 3D visualized products. However, the creation of 3D content is a major challenge in realizing a 3D enabled shopping system. The high cost of 3D scanning devices inhibits the popularity of scanned 3D objects on the web and related applications. Therefore, one major targets of our system is to provide a low cost 3D scanning solution suitable for naïve web users. We exploit the Kinect device, which is a low-cost and fast depth sensor with color, in the development of a 3D scanning system. With an integration of a marker-based tracking system to estimate the current view angle of Kinect sensor during depth acquisition, the obtained depth data can reconstruct the 3D model by a preliminary coordinate frame alignment and a registration of all point clouds. The whole process of capturing, storing, uploading, compressing and displaying 3D models of products on web application is done with minimal user involvements. The introduction of attractive and fashionable 3D product on the web will gain significant attention from customers and evolve habits and traditions in e-commerce, especially for C2C business, in which sellers can promote their goods for sale with scanned 3D models.",
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"title": "When Specular Object Meets RGB-D Camera 3D Scanning: Color Image Plus Fragmented Depth Map",
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"abstract": "3D scanning is an important technology since one can apply the scanning results of objects to numerous 3D applications (e.g. Artwork sculpture preserving, 3D animation and 3D printing). However, 3D laser scanners are too expensive to be adopted in daily usage. Therefore, building a 3D scanner by a low cost RGB-D camera (e.g. Kinect) is an emerging trend. For a 3D scanner, a specular object is one of the challenging 3D scanning targets where the specular surface will compromise the scanning (laser) lights and lead to scanning failure. In order to acquire the ground truth for 3D scanning of specular objects, we have to perform a non-specular painting process even a 3D laser scanner is used. In order to meet this challenge for an RGB-D camera based 3D scanner, we integrate the response of visual cues reflection and the depth scattering characteristics of specular surfaces to resolve the artifacts of 3D scanning results. Experimental results show our proposed system outperforms the traditional RGB-D 3D scanners in reconstruction quality while keeping the specular object intact (i.e., We need not to perform the pre-described non-specular painting process on the object before scanning).",
"abstracts": [
{
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"content": "3D scanning is an important technology since one can apply the scanning results of objects to numerous 3D applications (e.g. Artwork sculpture preserving, 3D animation and 3D printing). However, 3D laser scanners are too expensive to be adopted in daily usage. Therefore, building a 3D scanner by a low cost RGB-D camera (e.g. Kinect) is an emerging trend. For a 3D scanner, a specular object is one of the challenging 3D scanning targets where the specular surface will compromise the scanning (laser) lights and lead to scanning failure. In order to acquire the ground truth for 3D scanning of specular objects, we have to perform a non-specular painting process even a 3D laser scanner is used. In order to meet this challenge for an RGB-D camera based 3D scanner, we integrate the response of visual cues reflection and the depth scattering characteristics of specular surfaces to resolve the artifacts of 3D scanning results. Experimental results show our proposed system outperforms the traditional RGB-D 3D scanners in reconstruction quality while keeping the specular object intact (i.e., We need not to perform the pre-described non-specular painting process on the object before scanning).",
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"abstract": "Perceiving dynamic scenes of rigid bodies, through affine projections of moving 3D point clouds, boils down to clustering the rigid motion subspaces supported by the points' image trajectories. For a physically meaningful interpretation, clusters must be consistent with the geometry of the underlying subspaces. Most of the existing measures for subspace clustering are ambiguous, or geometrically inconsistent. A practical consequence is that methods based on such (dis)similarities are unstable when the number of rigid bodies increase. This paper introduces the Normalized Subspace Inclusion (NSI) criterion to resolve these issues. Relying on this similarity, we propose a robust methodology for rigid motion segmentation, and test it, extensively, on the Hopkins155 database. The geometric consistency of the NSI assures the method's accuracy when the number of rigid bodies increases, while robustness proves to be suitable for dealing with challenging imaging conditions.",
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"abstract": "Recent advances of computer hardware technologies have made it possible to render 3D CG images in real time, and 3D graphics has become in great demand for various applications. However the development of 3D graphics software is still laborious work compared to 2D software development. Hence, the research group of the authors has proposed a component-based 3D graphics software development system called IntelligentBox. However, developers have to construct 3D composite components manually when developing an application even using such a component-based tool, and this is time consuming task. Hence, this paper proposes an automatic construction method of 3D composite objects from range data of artifacts. The 3D object construction system based on this method decomposes a unified surface model obtained from range data of a certain artifact to several elements by segmenting it, automatically exchanges each element into its similar shape model, which is already prepared as a functional component of IntelligentBox, and composes them into one functional composite component which looks like the original artifact. In this way, the user obtains functional composite 3D objects from range data easily.",
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"content": "Recent advances of computer hardware technologies have made it possible to render 3D CG images in real time, and 3D graphics has become in great demand for various applications. However the development of 3D graphics software is still laborious work compared to 2D software development. Hence, the research group of the authors has proposed a component-based 3D graphics software development system called IntelligentBox. However, developers have to construct 3D composite components manually when developing an application even using such a component-based tool, and this is time consuming task. Hence, this paper proposes an automatic construction method of 3D composite objects from range data of artifacts. The 3D object construction system based on this method decomposes a unified surface model obtained from range data of a certain artifact to several elements by segmenting it, automatically exchanges each element into its similar shape model, which is already prepared as a functional component of IntelligentBox, and composes them into one functional composite component which looks like the original artifact. In this way, the user obtains functional composite 3D objects from range data easily.",
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"affiliation": "Kyushu University, Japan",
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"abstract": "This paper describes the evaluation of two multimodal interfaces designed to provide visually impaired people with access to various types of graphs. The interfaces consist of audio and haptics which is rendered on commercially available force feedback devices. Usability of force feedback devices in real applications is seldom investigated and compared. Therefore this study is aimed at comparing the usability of two force feedback devices: the SensAble PHANToM and the Logitech WingMan force feedback mouse in representing graphical data. The type of graph used in the experiment is the bar chart under two experimental conditions: single mode and multimodal. The results show that PHANToM provides better performance in the haptic only condition. However, no significant difference has been found between two devices in the multimodal condition. This has confirmed the advantages of using multimodal approach in our research and that low-cost haptic devices can be successful. This paper introduces our evaluation approach and discusses the findings of the experiment.",
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"abstract": "Palpation is an important method in the medical physical examination. Surface palpation alone, however, cannot be used in many situations due to the anatomical positions. Elastography images are therefore in many cases a complement to other imaging modalities. In this article we present a method for providing haptic feedback from elastography imaging data, allowing palpation of the hardness data. A prototype implementation was used in a demonstration session with domain experts providing feedback on the presented algorithm and also on the basic principle of palpating data from elastography imaging.",
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"abstract": "In this paper, we present a watercolor inspired method for the rendering of surfaces. Our approach mimics the watercolor process by building up an illuminated scene through the compositing of several layers of semi-transparent paint. The key steps consist of creating textures for each layer using LIC of Perlin Noise, and then calculating the layer thickness distribution using an inverted subtractive lighting model. The resulting watercolor-style images have color coherence that results from the mixing of a limited palette of paints. The new lighting model helps to better convey large shape changes, while texture orientations give hints of less dominant features. The rendered images therefore possess perceptual clues to more effectively communicate shape and texture information.",
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"abstract": "There is a natural trend in modeling a scene on a computer with minimum effort of the user. Wire-frame modeling and texturing is the main two factors that affect the quality of results in computer graphics.In this paper, instead of 3D model reconstruction, automatical texture extraction and texture registering for surfaces are discussed. Deficiency of the artificial textures to create photo-realistic results leads to using real textures for rendering. Assuming that camera parameters, lighting conditions, 3D model and its surface properties are known and the image sequences of the scene are provided by the user, textures for surfaces can be extracted from images.Naturally, textures coming from different images need to be enhanced. Some artifacts i.e., highlights, distortion from perspective projection should be removed. Unlike traditional texture mapping which generates a single texture for a surface, multiple textures are used in rendering. Selection mechanism enables us to choose the best texture from multiple textures according to the orientation of the viewpoint. The texture, which is mapped, is not unique and static. Therefore, it is called dynamic texture mapping. Experiments show that the results are promising.",
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"abstract": "Real-time rendering of massively textured 3D scenes usually involves two major problems: Large numbers of texture switches are a well-known performance bottleneck and the set of simultaneously visible textures is limited by the graphics memory. This paper presents a level-of-detail texturing technique that overcomes both problems. In a preprocessing step, the technique creates a hierarchical data structure for all textures used by scene objects, and it derives texture atlases at different resolutions. At runtime, our texturing technique requires only a small set of these texture atlases, which represent scene textures in an appropriate size depending on the current camera position and screen resolution. Independent of the number and total size of all simultaneously visible textures, the achieved frame rates are similar to that of rendering the scene without any texture switches. Since the approach includes dynamic texture loading, the total size of the textures is only limited by the hard disk capacity. The technique is applicable for any 3D scenes whose scene objects are primarily distributed in a plane, such as in the case of 3D city models or outdoor scenes in computer games. Our approach has been successfully applied to massively textured, large-scale 3D city models.",
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"abstract": "To render images from a three-dimensional array of sample values, it is necessary to interpolate between the samples. This paper is concerned with interpolation methods that are equivalent to convolving the samples with a reconstruction filter; this covers all commonly used schemes, including trilinear and cubic interpolation. We first outline the formal basis of interpolation in three-dimensional signal processing theory. We then propose numerical metrics that can be used to measure filter characteristics that are relevant to the appearance of images generated using that filter. We apply those metrics to several previously used filters and relate the results to isosurface images of the interpolations. We show that the choice of interpolation scheme can have a dramatic effect on image quality, and we discuss the cost/benefit tradeoff inherent in choosing a filter.<>",
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