作者: 倒轉(zhuǎn) 時(shí)間: 2025-3-21 23:16
t committee who in 1962 presented the “Information Al- bra”. At about the same time B?rje Langefors published his elementary message and e-file approach to specification of information systems. The next decade,978-3-642-07256-7978-3-540-39390-0作者: Allergic 時(shí)間: 2025-3-22 04:06
Novel Design Method for Manufacturing Internal Cooling Channels Additively with a Functional Supporttures. The support structures must be mechanically removed after manufacturing, which becomes complicated or sometimes impossible, particularly for internal structures..To fully exploit the design freedom, this work focuses on a novel design method to enable support-free production of complex intern作者: 美學(xué) 時(shí)間: 2025-3-22 05:35 作者: Gastric 時(shí)間: 2025-3-22 11:05
Review and Development of Design Guidelines for Additive Tooling of Injection Molds Using PolyJet MoModeling (PJM), have a great potential for use in additive tooling. Due to the poorer mechanical and thermal properties compared to conventional mold insert materials, e.g. steel or aluminum, the previously used design principles cannot be applied. Accordingly, new design guidelines are necessary, w作者: 矛盾 時(shí)間: 2025-3-22 16:39
Designing Variable Thickness Sheets for?Additive Manufacturing Using Topology Optimization with?Greyhanced manufacturability. In regions of load concentrations, where stresses vary significantly, the results show a general potential for performance improvement, when switching from conventional designs (e.g. sheet metals) to more complex designs that would require advanced manufacturing methods, su作者: 兩棲動物 時(shí)間: 2025-3-22 18:53 作者: FRAX-tool 時(shí)間: 2025-3-22 22:33
Integration of the Whole Digital Chain in a Unique File for PBF-LB/M: Practical Implementation Withibeing established. The outcome is a file in an advanced commercially available format which includes all simulations and manufacturing instructions. The information depth of this file extends to the level of the scan vectors and allows the automatic optimization and holistic documentation. In additi作者: thwart 時(shí)間: 2025-3-23 02:51 作者: 即席演說 時(shí)間: 2025-3-23 07:53 作者: Concerto 時(shí)間: 2025-3-23 10:42 作者: lesion 時(shí)間: 2025-3-23 15:55
The Influence of Nozzle Size on the Printing Process and the Mechanical Properties of FFF-Printed Pahe nozzle size affects both the printing process and the mechanical properties of the printed parts. Tensile bars have been manufactured in polylactic acid (PLA) using 7 different nozzle sizes. The samples were investigated by means of computer tomography (CT) and optical microscopy and subjected to作者: insert 時(shí)間: 2025-3-23 18:57 作者: 切碎 時(shí)間: 2025-3-23 23:41 作者: travail 時(shí)間: 2025-3-24 03:47 作者: 微不足道 時(shí)間: 2025-3-24 09:14
e original contributions of our technique are as follows: 1) it is not based on instance examples but on restrictions and correspondences, 2) we have devised an algorithm to make restrictions and correspondences explicit over a number of language-independent executable mappings, and 3) we have devis作者: Hemiplegia 時(shí)間: 2025-3-24 11:37 作者: indigenous 時(shí)間: 2025-3-24 17:29 作者: fidelity 時(shí)間: 2025-3-24 20:15
Klaus Hoschke,Konstantin Kappe,Sankalp Patil,Sebastian Kilchert,Junseok Kim,Aron Pfaffhe systems development process. In this paper some typical verification problems in workflow specifications are identified and their complexity is addressed. It will be proven that some fundamental problems are not tractable and we will show what restriction is needed to allow termination problems t作者: prostate-gland 時(shí)間: 2025-3-25 03:04
fluenced by R&D efforts at Unisys, IBM, Microsoft as well as on going work at the Object Management Group (Meta Object Facility) and earlier efforts of ECMA PCTE and ANSI X3H4 IRDS repository efforts. Representative architectures for object repositories for CORBA and COM based repositories are brief作者: 激怒某人 時(shí)間: 2025-3-25 07:06 作者: 忙碌 時(shí)間: 2025-3-25 09:34 作者: 祖?zhèn)髫?cái)產(chǎn) 時(shí)間: 2025-3-25 12:06
Guilain Lang,Gerald Perruchoud,David Novo,Stephane Brunhat have been classified, an expert system knowledge acquisition component, and a distance measure for assessing the distance between the meanings of terms. The ontology was tested by different types of users on a variety of problems and was shown to be quite effective.作者: semiskilled 時(shí)間: 2025-3-25 19:28
Hans Aoyang Zhou,Song Zhang,Marco Kemmerling,Daniel Lütticke,Johannes Henrich Schleifenbaum,Robert Hgames, animated pictures, ringing tones, horoscopes, restaurant guides such as ZAGAT, and news including CNN, Bloomberg, and Dow Jones. Weather forecasts are also available. We also provide mobile banking by over 400 banks including CITIBANK, as well as mobile trading and on-line stock selling/buyin作者: 惡意 時(shí)間: 2025-3-25 23:00 作者: 剛開始 時(shí)間: 2025-3-26 03:07
ences (through marks). This addressing scheme can then be used for marking from additional layers of superimposed information. We consider schematics as a useful model for superimposed information and discuss how it fits into our general research on superimposed information.作者: 地牢 時(shí)間: 2025-3-26 05:58 作者: 終端 時(shí)間: 2025-3-26 11:05 作者: 先兆 時(shí)間: 2025-3-26 16:42
2730-9576 book also covers broader issues related to additive manufacturing, such as Manufacturing Readiness Levels, implementing AM machines into the existing production chain, and quality assurance and control mechanisms.?.978-3-031-42985-9978-3-031-42983-5Series ISSN 2730-9576 Series E-ISSN 2730-9584 作者: LARK 時(shí)間: 2025-3-26 20:34 作者: Debrief 時(shí)間: 2025-3-26 21:42
Joakim Larsson,Per Lindstr?m,Christer Korin,Jens Ekengren,Patrik Karlsson tion, and reasoning on information and knowledge, and their manipulation in the systems, in addition to understanding and designing the functions of the systems. The conceptualization process 978-3-540-44277-6978-3-540-45816-6Series ISSN 0302-9743 Series E-ISSN 1611-3349 作者: vibrant 時(shí)間: 2025-3-27 04:28 作者: 嚙齒動物 時(shí)間: 2025-3-27 05:25
Comparative Evaluation of Optimization Algorithms for Automatic Build Orientation for Powder Bed Fuser, supporting, etc.) are required. In the current state of the art digital process chains, these steps are done manually by an engineer, utilizing specialized AM preparation software, e.g., Autodesk Netfabb or Materialise Magics. Especially the part orientation has a significant impact on part qual作者: BIDE 時(shí)間: 2025-3-27 12:00 作者: exostosis 時(shí)間: 2025-3-27 16:00 作者: lipoatrophy 時(shí)間: 2025-3-27 19:35
Designing Variable Thickness Sheets for?Additive Manufacturing Using Topology Optimization with?Greyility, e.g. by material extrusion-based AM (MEX) or Laser-Beam Powder-Bed-Fusion of Metals (PBF-LB/M), a minimum structure thickness has often to be maintained. In this paper, a simple interpolation scheme for penalizing grey-scale densities in topology optimization is applied. It locally reduces th作者: 口訣 時(shí)間: 2025-3-27 23:39
Sustainability-Oriented Topology Optimization Towards a More Holistic Design for Additive Manufacturrint and possibly more. In balancing the latter, results of design changes are frequently counterintuitive, and this happens especially when it comes to sustainability-related qualities. The latter are commonly modeled by a Life-Cycle Assessment (LCA) of the fabrication and use-phase. However, it is作者: CUB 時(shí)間: 2025-3-28 06:06
Integration of the Whole Digital Chain in a Unique File for PBF-LB/M: Practical Implementation Withier beam of Metals (PBF-LB/M) reached a level of high performance in terms of process stability and material spectrum. However, the digital process chain, starting from CAD via CAM and plant-specific compilation of the manufacturing file exhibits media disruptions. The consequence is a loss of metada作者: coddle 時(shí)間: 2025-3-28 09:02
Approach to an Automated Method for Load-Optimized Design of Multimaterial Joints for Additive Manufso bring new challenges such as creating a sufficiently strong bond between materials and ensuring their continued recyclability. This paper presents a method for designing structures for joining different materials based on the use of experimentally determined values and artificial intelligence..Th作者: GORGE 時(shí)間: 2025-3-28 12:29 作者: Memorial 時(shí)間: 2025-3-28 16:09
Fabrication Forecasting of?LPBF Processes Through Image Inpainting with?In-Situ Monitoring Dataroducts. In order to meet these quality requirements, layer-wise in-situ monitoring data is captured to detect process deviations that potentially lead to product defects. However, this way of process monitoring is limited to a retrospective analysis, where defect development is usually unavoidable.作者: –DOX 時(shí)間: 2025-3-28 21:09 作者: 遠(yuǎn)地點(diǎn) 時(shí)間: 2025-3-29 00:19
Systematical Assessment of Automation Potential in Additive Manufacturing Process Chainsigh geometric design freedom at almost constant production costs. In terms of industrialization, the efficient integration of AM systems into lean production lines is essential. Up to 80% of the total lead time and costs of additively manufactured components are currently generated before or after t作者: deriver 時(shí)間: 2025-3-29 06:51
Numerical Modeling of Part Formation in Volumetric Additive Manufacturingever, it faces difficulty with printing fine structures, highlighting the need for better process understanding. In this study, we propose a numerical method based on the energy threshold model to predict the shape of printed parts in VAM. We have combined a solver developed in OpenFOAM with an in-h作者: 涂掉 時(shí)間: 2025-3-29 09:04 作者: CLEAR 時(shí)間: 2025-3-29 14:08
equired to correctly apply them in real projects.Explains thIt is now more than fifty years since the first paper on formal specifications of an information system was published by Young and Kent. Even if the term “conceptual model” was not used at that time, the basic intention of the abstract spec作者: 樂章 時(shí)間: 2025-3-29 17:59 作者: 放縱 時(shí)間: 2025-3-29 22:28 作者: cochlea 時(shí)間: 2025-3-30 02:08
Leonie Pauline Pletzer-Zelgert,Sebastian Dirks,Corinna Müller,Johannes Henrich Schleifenbaumin Vancouver, British Columbia, Canada. Conceptual modeling can be considered as lying at the confluence of the three main aspects of information technology applications –– the world of the stakeholders and users, the world of the developers, and the technologies available to them. C- ceptual models作者: heartburn 時(shí)間: 2025-3-30 06:03 作者: 卵石 時(shí)間: 2025-3-30 09:06
atically is appealing insofar it may reduce integration costs. Matching techniques automatically generate uninterpreted mappings, a.k.a. correspondences, that must be interpreted to perform the data translation task. Other techniques automatically generate executable mappings, which encode an interp作者: foodstuff 時(shí)間: 2025-3-30 15:51
Hussam Georges,Christian Mittelstedt,Wilfried Beckeraditional database querying impossible. Many Web documents, however, contain an abundance of recognizable constants that together describe the essence of a document’s content. For these kinds of data-rich documents (e.g., advertisements, movie reviews, weather reports, travel information, sports sum作者: 絕種 時(shí)間: 2025-3-30 19:44
Felix Endress,Markus Zimmermannand physical design has been finished. The intension of tuning is to make database transactions run more quickly, which often results in redesigning and/or denormalizing internal data schemata. This, however, can become a crucial part of database life cycles whenever internal views are not represent作者: euphoria 時(shí)間: 2025-3-30 22:05
Klaus Hoschke,Konstantin Kappe,Sankalp Patil,Sebastian Kilchert,Junseok Kim,Aron Pfaffe the needs of particular applications. In the literature workflows are proposed to design these kinds of applications. The key tool for designing such applications is a powerful conceptual specification language. Such a language should be capable of capturing interactions and cooperation between co作者: Servile 時(shí)間: 2025-3-31 03:25
ration, repository architectures and distributed heterogeneous computing. A repository is the basis for data/object sharing and integration for application as well as business objects in an information systems environment..This paper discusses object oriented repository architectures influenced by O
