Refine
Year of publication
- 2024 (22)
- 2023 (77)
- 2022 (122)
- 2021 (127)
- 2020 (154)
- 2019 (191)
- 2018 (165)
- 2017 (153)
- 2016 (150)
- 2015 (162)
- 2014 (159)
- 2013 (168)
- 2012 (152)
- 2011 (178)
- 2010 (173)
- 2009 (175)
- 2008 (148)
- 2007 (137)
- 2006 (129)
- 2005 (122)
- 2004 (150)
- 2003 (95)
- 2002 (123)
- 2001 (103)
- 2000 (102)
- 1999 (109)
- 1998 (98)
- 1997 (96)
- 1996 (81)
- 1995 (78)
- 1994 (86)
- 1993 (59)
- 1992 (54)
- 1991 (29)
- 1990 (39)
- 1989 (44)
- 1988 (56)
- 1987 (32)
- 1986 (19)
- 1985 (33)
- 1984 (22)
- 1983 (20)
- 1982 (29)
- 1981 (20)
- 1980 (36)
- 1979 (24)
- 1978 (34)
- 1977 (14)
- 1976 (13)
- 1975 (12)
- 1974 (3)
- 1973 (2)
- 1972 (2)
- 1971 (1)
- 1968 (1)
Document Type
- Article (3149)
- Conference Proceeding (1016)
- Part of a Book (184)
- Book (144)
- Doctoral Thesis (30)
- Patent (25)
- Other (9)
- Report (9)
- Preprint (4)
- Poster (3)
- Talk (3)
- Master's Thesis (2)
- Working Paper (2)
- Bachelor Thesis (1)
- Contribution to a Periodical (1)
- Habilitation (1)
Language
- English (4583) (remove)
Has Fulltext
- no (4583) (remove)
Keywords
- Gamification (6)
- avalanche (6)
- Earthquake (5)
- Enterprise Architecture (5)
- MINLP (5)
- solar sail (5)
- Diversity Management (4)
- Energy storage (4)
- Engineering optimization (4)
- LAPS (4)
- Natural language processing (4)
- Papierkunst (4)
- Power plants (4)
- Seismic design (4)
- field-effect sensor (4)
- frequency mixing magnetic detection (4)
- hydrogen (4)
- metal structure (4)
- snow (4)
- steel (4)
Institute
- Fachbereich Medizintechnik und Technomathematik (1545)
- Fachbereich Elektrotechnik und Informationstechnik (686)
- IfB - Institut für Bioengineering (560)
- Fachbereich Energietechnik (552)
- INB - Institut für Nano- und Biotechnologien (532)
- Fachbereich Chemie und Biotechnologie (522)
- Fachbereich Luft- und Raumfahrttechnik (463)
- Fachbereich Maschinenbau und Mechatronik (261)
- Fachbereich Wirtschaftswissenschaften (196)
- Solar-Institut Jülich (160)
- Fachbereich Bauingenieurwesen (146)
- ECSM European Center for Sustainable Mobility (75)
- MASKOR Institut für Mobile Autonome Systeme und Kognitive Robotik (62)
- Fachbereich Gestaltung (24)
- Nowum-Energy (24)
- Institut fuer Angewandte Polymerchemie (23)
- Sonstiges (21)
- Fachbereich Architektur (20)
- Freshman Institute (18)
- Kommission für Forschung und Entwicklung (18)
Tool supported requirements analysis for the user centered development of mobile enterprise software
(2008)
A user centered development method has proved satisfactory for the development of mobile enterprise software. To make use of this method, detailed information about the user and the place where the user interacts with his mobile device is required. This article describes how both can be modeled by a stereotypical and conceptual extended UML extension. Finally, a software tool is presented that supports the developed UML extension.
RGB-D sensors such as the Microsoft Kinect or the Asus Xtion are inexpensive 3D sensors. A depth image is computed by calculating the distortion of a known infrared light (IR) pattern which is projected into the scene. While these sensors are great devices they have some limitations. The distance they can measure is limited and they suffer from reflection problems on transparent, shiny, or very matte and absorbing objects. If more than one RGB-D camera is used the IR patterns interfere with each other. This results in a massive loss of depth information. In this paper, we present a simple and powerful method to overcome these problems. We propose a stereo RGB-D camera system which uses the pros of RGB-D cameras and combine them with the pros of stereo camera systems. The idea is to utilize the IR images of each two sensors as a stereo pair to generate a depth map. The IR patterns emitted by IR projectors are exploited here to enhance the dense stereo matching even if the observed objects or surfaces are texture-less or transparent. The resulting disparity map is then fused with the depth map offered by the RGB-D sensor to fill the regions and the holes that appear because of interference, or due to transparent or reflective objects. Our results show that the density of depth information is increased especially for transparent, shiny or matte objects.
Selective Laser Melting (SLM) is one of the Additive Manufacturing (AM) technologies applicable for producing complex geometries which are typically expensive or difficult to fabricate using conventional methods. This process has been extensively investigated experimentally for various metals and the fabrication process parameters have been established for different applications; however, fabricating 3D glass objects using SLM technology has remained a challenge so far although it could have many applications. This paper presents a summery on various experimental evaluations of a material database incorporating the build parameters of glass powder using the SLM process for jewelry applications.
This paper presents a numerical procedure for reliability analysis of thin plates and shells with respect to plastic collapse or to inadaptation. The procedure involves a deterministic shakedown analysis for each probabilistic iteration, which is based on the upper bound approach and the use of the exact Ilyushin yield surface. Probabilistic shakedown analysis deals with uncertainties originated from the loads, material strength and thickness of the shell. Based on a direct definition of the limit state function, the calculation of the failure probability may be efficiently solved by using the First and Second Order Reliability Methods (FORM and SORM). The problem of reliability of structural systems (series systems) is handled by the application of a special technique which permits to find all the design points corresponding to all the failure modes. Studies show, in this case, that it improves considerably the FORM and SORM results.