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Träfflista för sökning "WAKA:kon srt2:(1995-2009)"

Sökning: WAKA:kon > (1995-2009)

  • Resultat 71-80 av 100957
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71.
  • Abbas, Khaled A, et al. (författare)
  • A generic approach for in depth statistical investigation of accident characteristics and causes
  • 2001
  • Ingår i: Proceedings of the conference Traffic Safety on Three Continents. - Linköping : Statens väg- och transportforskningsinstitut. ; , s. 653-665
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • The main aim of this research is to develop a generic approach for the utilization of statistical methods to conduct depth investigation of road accident characteristics and causes. This approach is applied in an effort to analyse the 1998 accident database for the main rural roads in Egypt. This database is composed of traffic accident data collected for 14 road sections representing nine major roads of the Egyptian rural road network. The proposed approach is composed of two main stages of analysis. Within each stage, several analytical steps are conducted. The first stage is mainly concerned with developing cluster bar charts, where different characteristics and causes of accidents are portrayed in relation to variations in the three main accident contributing factors, namely types of roads, vehicles and drivers. The second stage is concerned with conducting in-depth statistical analysis of the collected accident data. Within this stage, four levels of statistical investigations were conducted. These are meant to examine a number of issues.
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72.
  • Abbas, Khaled A (författare)
  • Environmentally sustainable transport strategies : the way forward in metropolitan cities
  • 2001
  • Ingår i: Proceedings of the conference Traffic Safety on Three Continents. - Linköping : Statens väg- och transportforskningsinstitut. ; , s. 780-791
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
    • This paper is concerned with one of the three requirements of a sustainable transport system, namely the environmental dimension. It starts by presenting components and interactions of the transport and traffic systems using causal diagrams. Generic traffic problems are identified and their causes categorized. A classification of demand and supply-based policies and measures that can be used in designing environmentally sustainable transport strategies is depicted. Such strategies are targeted towards minimizing the generic traffic problems encountered in metropolitan cities, i.e., traffic congestion, accidents, environmental degradation and energy inefficiencies. In this paper, Travel Demand and Land Use Management are considered as two of the basic pillars for designing environmentally sustainable transport strategies. Criteria for comparing demand versus supply-based policies are suggested. These are applied to assess the benefits and limitations of each policy, hence assisting decision makers in the prioritization and choice of such policies.
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73.
  • Abbas, Muhammad, et al. (författare)
  • Comparison of Multiplierless Implementation of Nonlinear-Phase Versus Linear-Phase FIR filters
  • 2008
  • Konferensbidrag (refereegranskat)abstract
    • FIR filters are often used because of their linear-phase response. However, there are certain applications where the linear-phase property is not required, such as signal energy estimation, but IIR filters can not be used due to the limitation of sample rate imposed by the recursive algorithm. In this work, we discuss multiplierless implementation of minimum order, and therefore nonlinear-phase, FIR filters and compare it to the linear-phase counterpart.
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74.
  • Abbas, Muhammad, et al. (författare)
  • Scaling of fractional delay filters based on the Farrow structure
  • 2009
  • Ingår i: Proceedings of IEEE International Symposium on Circuits and Systems, 2009. ISCAS 2009. - Piscataway : IEEE. - 9781424438273 ; , s. 489-492
  • Konferensbidrag (refereegranskat)abstract
    • In this work we consider scaling of fractional delay filters using the Farrow structure. Based on the observation that the subfilters approximate the Taylor expansion of a differentiator, we derive estimates of the L2-norm scaling values at the outputs of each subfilter as well as at the inputs of each delay multiplier. The scaling values can then be used to derive suitable wordlengths in a fixed-point implementation.
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80.
  • Abbasi, A. G., et al. (författare)
  • A model and design of a security provider for Java applications
  • 2009
  • Ingår i: International Conference for Internet Technology and Secured Transactions, ICITST 2009. - : IEEE. - 9781424456482 ; , s. 5402592-
  • Konferensbidrag (refereegranskat)abstract
    • The model and design of a generic security provider provides a comprehensive set of security services, mechanisms, encapsulation methods, and security protocols for Java applications. The model is structured in four layers; each layer provides services to the upper layer and the top layer provide services to applications. The services reflect security requirements derived from a wide range of applications; from small desktop applications to large distributed enterprise environments. Based on the abstract model, this paper describes design and implementation of an instance of the provider comprising various generic security modules: symmetric key cryptography, asymmetric key cryptography, hashing, encapsulation, certificates management, creation and verification of signatures, and various network security protocols. This paper also describes the properties extensibility, flexibility, abstraction, and compatibility of the Java Security Provider.
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