SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "LAR1:bth ;lar1:(bth);srt2:(1995-1999);srt2:(1997)"

Sökning: LAR1:bth > Blekinge Tekniska Högskola > (1995-1999) > (1997)

  • Resultat 1-10 av 115
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Adolfsson, Stefan, et al. (författare)
  • A Sequential Probability Ratio Test Method for Quality Monitoring in Robotised GMA Welding
  • 1997
  • Konferensbidrag (refereegranskat)abstract
    • This paper deals with the problem of automatic monitoring the weld quality when welding with Gas Metal Arc (GMA) in short circuiting mode. Experiments with two different types of T-joints are performed in order to provoke optimal and non-optimal welding conditions. During the experiments, voltage and current are measured from the welding process. A simple statistical change detection algorithm for the weld quality, the repeated Sequential Probability Ratio Test (SPRT), is used. The algorithm can equivalently be viewed as a cumulative sum (CUSUM) - type test. The test statistics is based upon the fluctuations of amplitude in the weld voltage. It is shown that the fluctuations of the weld voltage amplitude decreases when the welding process is not operating under optimal condition. The results obtained from the experiments indicate that it is possible to detect changes in the weld quality automatically and on-line.
  •  
2.
  •  
3.
  • Adolfsson, Stefan (författare)
  • Quility Monitoring in Robotised Short Circuiting GMA Welding
  • 1997
  • Rapport (övrigt vetenskapligt/konstnärligt)abstract
    • This paper addresses the problem of automatic monitoring the weld quality produced by robotised short arc welding. A simple statistical change detection algorithm for the weld quality, recursive Sequential Probability Ratio Test (SPRT), is used. The algorithm may equivalently be viewed as a cumulative sum (CUSUM) - type test. The test statistics is based upon the variance of the amplitude of the weld voltage. The performance of the algorithm is evaluated using experimental data. The results obtained from the algorithm indicate that it is possible to detect changes in the weld quality automatically and on-line.
  •  
4.
  •  
5.
  • Arvidsson, Åke, et al. (författare)
  • Profit Optimal Congestion Control in Intelligent Networks
  • 1997
  • Ingår i: 15th International Teletraffic Congress on Teletraffic Contributions for the Information. - WASHINGTON, DC : ELSEVIER SCIENCE PUBL B V. - 0444825983 ; , s. 911-920
  • Bokkapitel (refereegranskat)abstract
    • Current developments in technologies and markets stress the importance of exible and robust performance optimisation and congestion control. In intelligent networks, conges- tion control has traditionally taken a mainly technical view and focused on protecting individual nodes from harmful overloads. We take a profit oriented, network wide view and develop a congestion control mechanism to ensure profit maximisation under real time performance. Numerical studies in a simulator show that the proposed mechanism is robust and, in particular in overloaded states, provides a substantial improvement in comparison to conventional load control mechanisms.
  •  
6.
  •  
7.
  •  
8.
  • Bosch, Jan, et al. (författare)
  • A Model for a Flexible and Predictable Object-Oriented Real-Time System
  • 1997
  • Konferensbidrag (refereegranskat)abstract
    • The requirements on real-time systems are changing. Traditionally, reliability and predictability of hard, real-time systems in particular were the main requirements. This lead to systems that were stand-alone, embedded and static. Future real-time systems, but even current systems, still require reliability and predictability, but also distribution of the real-time system, integration with non real-time systems and the ability to change dynamically the components of the system at run-time. Traditional approaches to real-time system development have difficulty in addressing these additional requirements. New ways of constructing real-time systems must therefore be explored. In this article, we develop a real-time object-oriented model that facilitates the requirements of flexibility without sacrificing the predictability, integration and dynamicity aspects.
  •  
9.
  • Bosch, Jan (författare)
  • Abstracting object state
  • 1997
  • Ingår i: OBJECT ORIENTED SYSTEMS. - LONDON : CHAPMAN HALL LTD. - 0969-9767. ; , s. 1-&
  • Tidskriftsartikel (refereegranskat)abstract
    • The term `state' has many different meanings, depending on the context in which it is used. In the implementation phase, it refers to the values of the instance variables of the object; during design, it refers to states used in finite state models or their derivatives. For both interpretations, problems have been identified: (1) the way clients of an object access its state is defined in an ad hoc manner, (2) the conventional object-oriented model provides no means to change the interface of an object dynamically on the basis its state or the type of client accessing it, (3) finite state machine approaches are not uniformly integrated in the object-oriented model nor do they provide sufficient complexity reduction for modelling the dynamic behaviour, and (4) no support is provided for defining active states. In this paper we introduce the concept of abstract object state as a solution to these problems. This concept provides a systematic technique to explicitly define an abstraction of the object state which is placed at the interface of the object. The abstract object state consists of static states, but also of active states which can be seen as time derivatives of static states. We show that the abstract object state provides a more uniform approach to object behaviour specification than do finite state models. The concepts discussed have been implemented in the layered object model ((LOM)-O-AY), an extended object-oriented model which is supported by a translator to C++, an execution environment and an integrated development environment.
  •  
10.
  • Bosch, Jan (författare)
  • Adapting Object-Oriented Components
  • 1997
  • Konferensbidrag (refereegranskat)abstract
    • Several authors have identified that the only feasible way to increase productivity in software construction is to reuse existing software. To achieve this, component-based software development is one of the more promising approaches. However, traditional research in component-oriented programming often assumes that components are reused "as-is". Practitioners have found that "as-is" reuse seldomly occurs and that reusable components generally need to be adapted to match the system requirements. Existing component object models provide only limited sup-port for component adaptation, i.e. white-box techniques such as copy-paste and inheritance and black-box approaches such as aggregation and wrapping. These techniques suffer from problems related to reusability, effi-ciency, implementation overhead or the self problem. To address these problems, this paper proposes superimposi-tion, a novel black-box adaptation technique that allows one to impose predefined, but configurable types of functionality on a reusable component. Three categories of typical adaptation types are discussed, related to the component interface, component composition and component monitoring. Superimposition and the types of com-ponent adaptation are exemplified by several examples.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-10 av 115
Typ av publikation
konferensbidrag (62)
tidskriftsartikel (18)
rapport (16)
bokkapitel (10)
doktorsavhandling (4)
licentiatavhandling (3)
visa fler...
samlingsverk (redaktörskap) (1)
annan publikation (1)
visa färre...
Typ av innehåll
refereegranskat (87)
övrigt vetenskapligt/konstnärligt (28)
Författare/redaktör
Claesson, Ingvar (19)
Lagö, Thomas L (15)
Bosch, Jan (11)
Nordebo, Sven (10)
Arvidsson, Åke (9)
Öresjö, Eva (8)
visa fler...
Johansson, Sven (8)
Ygge, Fredrik (7)
Gustavsson, Jan-Olof (5)
Akkermans, Hans (5)
Hägg, Staffan (4)
Davidsson, Paul (4)
Dahl, Mattias (4)
Nordberg, Jörgen (4)
Lundberg, Lars (3)
Adolfsson, Stefan (3)
Winberg, Mathias (3)
Blomstrand, F (2)
Grahn, Håkan (2)
Börjesson, Per Ola (2)
Pettersson, Stefan (2)
Olsson, Torsten, 193 ... (2)
Bahrami, Ali (2)
Lennerstad, Håkan (2)
Boman, Magnus (2)
Håkansson, Lars (2)
Popescu, Adrian (2)
Broman, Göran (2)
Denvall, Verner (1)
Salonen, Tapio (1)
Svensson, Anders (1)
Hansson, H (1)
Ödling, Per (1)
Lieberg, Mats (1)
Bolmsjö, Gunnar (1)
Andersson, Per (1)
Eriksson, Per (1)
Lövström, Benny (1)
Johansson, Conny (1)
Gustavsson, Rune (1)
Brorsson, Mats (1)
Eriksson, Håkan (1)
Gustafson, Lars (1)
Hallberg, Ingalill R (1)
Norrsell, Johan (1)
Angelin, Lars (1)
Carlsson, Bengt (1)
Lundberg, Christer (1)
Henning, Cecilia (1)
Sturesson, Per-Olof (1)
visa färre...
Lärosäte
Chalmers tekniska högskola (2)
Linköpings universitet (1)
Lunds universitet (1)
Språk
Engelska (99)
Svenska (16)
Forskningsämne (UKÄ/SCB)
Teknik (69)
Naturvetenskap (41)
Samhällsvetenskap (4)
Medicin och hälsovetenskap (2)
Humaniora (2)
År

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy