In recent years, product shapes have become complicated, and a cutting simulator that can confirm the shape before actual machining is strongly required. In most cases, simulators are developed using a concept called ...
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ISBN:
(纸本)9781728139982
In recent years, product shapes have become complicated, and a cutting simulator that can confirm the shape before actual machining is strongly required. In most cases, simulators are developed using a concept called a "voxel." Voxel representation shapes 3d models, including tools and workpieces, with a set of minute cubes. However, voxel representation has a disadvantage in that it is difficult to accelerate the simulation. Therefore, this study used polygon representation instead of voxel representation. A cutting simulator was developed using the Vatti clipping algorithm from the computer graphics field.
This work presents a model for the development of a socket mechanism for transtibial prosthesis. A survey was carried out with Brazilian amputee users, based on interviews to understand the context of use and to be ab...
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ISBN:
(纸本)9783030778163;9783030778170
This work presents a model for the development of a socket mechanism for transtibial prosthesis. A survey was carried out with Brazilian amputee users, based on interviews to understand the context of use and to be able to identify problems of balance, ergonomic and friction problems in the prostheses' socket. With this, a list of requirements was defined, and a semantic map was created, which guided the development of a 3d model of a prosthetic socket, aiming to minimize the mechanical friction, allowing the regulation of the pressure exerted on the stump and the adjustment of fit according to the need of user.
Our proposed research project is to enable 3ddistributed visualization and manipulation involving collaborative effort through the use of web-based technologies. Our project resulted from a wide collaborative applica...
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ISBN:
(纸本)9788086943657
Our proposed research project is to enable 3ddistributed visualization and manipulation involving collaborative effort through the use of web-based technologies. Our project resulted from a wide collaborative application research fields: Computer Aideddesign (CAd), Building Information Modeling (BIM) or Product Life Cycle Management (PLM) where design tasks are often performed in teams and need a fluent communication system. The system allows distributed remote assembling in 3d scenes with real-time updates for the users. This paper covers this feature using hybrid networking solution: a client-server architecture (REST) for 3d rendering (webGL) anddata persistence (NoSQL) associated to an automatically built peer-to-peer (P2P) mesh for real-time communication between the clients (webRTC). The approach is demonstrated through the development of a web-platform prototype focusing on the easy manipulation, fine rendering and light update messages for all participating users. We provide an architecture and a prototype to enable users to design in 3d together in real time with the benefits of web based online collaboration.
Through silicon via (TSV) and stacked bonding are the core technologies to perform vertical interconnect for 3d integration. For wafer-level multilayer stacking process, thermal stress is generated and accumulateddue...
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ISBN:
(数字)9781665499057
ISBN:
(纸本)9781665499057
Through silicon via (TSV) and stacked bonding are the core technologies to perform vertical interconnect for 3d integration. For wafer-level multilayer stacking process, thermal stress is generated and accumulateddue to the difference in thermal expansion coefficients of materials in each layer of the structure. due to the large thermal stress, the issue of failures in the stacking process are caused by solder joints almost. Hence, thermal stress analyses for multilayer stacking process are in urgent need. In this paper, a finite element model (FEM) is established to investigate the reliabilities for six layered TSV wafer bonded. Selected the General Plane deformation (GPd) FEM model as the simulation model for conserving computer resources and time because of the large number of TSVs. Birth anddeath element technology is applied, anddescripted the procedure during the six layered wafer staking process. Considered three kinds of solder joint materials for SAC305, Sn63Pb37 and Sn10Pb90, and analyzed the von Mises stress and equivalent plastic strain.
It is crucial to enable regular users to explore rdF-compliant data bases in an effective way, regardless their knowledge about the SPARQL or the underlying ontology. Natural language querying have been proposed to ad...
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ISBN:
(纸本)9781450327459
It is crucial to enable regular users to explore rdF-compliant data bases in an effective way, regardless their knowledge about the SPARQL or the underlying ontology. Natural language querying have been proposed to address this issue. However it has unavoidably lower accuracy, as compared to systems with graph-based querying interfaces, which, in turn, are usually still too difficult for regular users. This paper presents a search system of user interface that is more user-friendly than widely known graph-based solutions.
The PLASTIC project adopts and revisits service-oriented computing for Beyond3(rd) Generation (B3G) networks, in particular aiming at assisting the development of services targeted at mobile devices. Specifically, PL...
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ISBN:
(纸本)9781424427765
The PLASTIC project adopts and revisits service-oriented computing for Beyond3(rd) Generation (B3G) networks, in particular aiming at assisting the development of services targeted at mobile devices. Specifically, PLASTIC introduces the PLASTIC platform to enable robust distributed lightweight services in B3G networking environments through: A development environment for the thorough development of SLA- and resource-aware services, which may be deployed on the various networked nodes, including handhelddevices;A service-oriented middleware leveraging multi-radio devices and multi-network environments for applications and services deployed on mobile devices, further enabling context-aware and secure discovery and access to such services;A validation framework enabling off-line and on-line validation of networked services regarding functional and non-functional properties.
A study of the 3d electron transfer from a spherical nano-particle in vacuum is presented as a continuation of a similar 1d analysis. The 3d confinement of the electronic states is analyzed and the emission current in...
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At present, the vast majority of LEd products are packaged using a mixture of silicone/epoxy resin and phosphor, and there are problems such as silicone/epoxy resin aging, brightness drop, color drift, and shortened l...
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ISBN:
(数字)9781665499057
ISBN:
(纸本)9781665499057
At present, the vast majority of LEd products are packaged using a mixture of silicone/epoxy resin and phosphor, and there are problems such as silicone/epoxy resin aging, brightness drop, color drift, and shortened life in practical applications. Fluorescent glass/ceramic has high temperature corrosion resistance, rare earth ions are evenly distributed in glass ceramics, with better color stability and color uniformity;Rare earth-doped glass block material is easy to fix, which is conducive to deviceization. In this paper, amorphous silica nanoparticles are used to reduce the interface reaction between phosphors and silicon glass, silicate glass with high silicon content is the best matrix material for its high chemical and thermal stability, and the use of amorphous silicon nanoparticles to promote the densification process and the development of luminescent light curing composite slurry to promote its densification process. The pressureless sintering method mixes phosphors and amorphous silica nanoparticles, so that the mixture containing phosphor can be directly used for 3d printing technology, and special-shaped luminescents can be obtained through three-dimensional printing technology programming and its performance is guaranteed. The fluorescent paste 3d printing technology can be manufactureddirectly with complex shapes of color converters for rapid manufacturing.
Information content provided by members of the general public (mostly online) is playing an ever-increasing role in the detection, production anddistribution of news. This paper investigates the concepts of (1) grass...
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ISBN:
(纸本)9781450327459
Information content provided by members of the general public (mostly online) is playing an ever-increasing role in the detection, production anddistribution of news. This paper investigates the concepts of (1) grassroots journalism and (2) collaborative journalism. It looks into similarities anddifferences and shows how both phenomena have been influenced by the emergence of the Internet anddigital technologies. Then, the consequences for journalism in general will be analysed. Ultimately, strategies to meet the new challenges are suggested in order to maintain the quality and reliability of news coverage in the future.
This paper introduces the Simplified Edge detector (SEd) architecture for 3d-HEVC depth maps coding. The SEd algorithm classifies the encoding block as homogeneous or edge. When SEd classifies the encoding block as ho...
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ISBN:
(纸本)9781509061136
This paper introduces the Simplified Edge detector (SEd) architecture for 3d-HEVC depth maps coding. The SEd algorithm classifies the encoding block as homogeneous or edge. When SEd classifies the encoding block as homogeneous, the encoding is simplified skipping the bipartition modes evaluation. This approach is capable of reducing 96.7% the bipartition modes evaluation with a drawback of only 0.94% in Bd-rate. The SEd hardware is capable of providing the decision for all available blocks inside a 32x32 block in only 34 cycles, with a power dissipation of only 25 mu W per frame, when synthesized for 65 nm ST standard cells technology.
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