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  • 1
    Electronic Resource
    Electronic Resource
    Species identification based on the point mutations of histo-blood group ABO genes by PCR-RFLP and direct sequencing (1997)
    Springer
    International journal of legal medicine 110 (1997), S. 254-259 
    Details
    ISSN: 1437-1596
    Keywords: Key words Species identification ; Primates ; ABO blood group ; PCR-RFLP ; Direct sequencing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Notes: Abstract Using the PCR-restriction fragment length polymorphism (RFLP) and direct sequencing methods, 181 bp DNA fragments at the ABO blood group locus of human and eight different primates were examined. Through PCR amplification and digestion of the product with Hha-1 restriction enzyme, each of the amplified fragments of human, chimpanzee and green monkey was cut into two fragments of 147 and 34 bp, and the corresponding fragment of the other primates was digested into three fragments of 115, 34 and 32 bp. The 181 bp fragments of chimpanzee and green monkey were digested with Mva-1 into three fragments of 82, 58 and 41 bp, and 69, 58 and 54 bp, while the fragments of human and the other primates were separated into two fragments of 123 and 58 bp. Thus, using Hha-1 and Mva-1, human PCR-amplified product of a part of the ABO gene could be discriminated from those of the other primates examined. In addition, by direct sequencing of the 181 bp DNA fragment, two Mva-1 recognition sites and one Hha-1 recognition site were found in the fragments of chimpanzee and green monkey, one Mva-1 site and one Hha-1 site were detected in humans, and one Mva-1 site and two Hha-1 sites in the other primates. These results corresponded well with the data of PCR-RFLP. This method has a good potential for species identification at the DNA level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004140050081
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Direct Method of Constructing H 2-Suboptimal Controllers: Continuous-Time Systems (1998)
    Springer
    Journal of optimization theory and applications 99 (1998), S. 585-616 
    Details
    ISSN: 1573-2878
    Keywords: Continuous-time systems ; H 2-suboptimal control ; direct methods ; low-gain designs ; disturbance decoupling problem ; almost disturbance-decoupling problem
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract An H 2-suboptimal control problem is defined and analyzed. Then, an algorithm called H 2-suboptimal state feedback gain sequence algorithm (Algorithm A1) is developed. Rather than utilizing a perturbation method, which is numerically stiff and computationally prohibitive, Algorithm A1 utilizes a direct eigenvalue assignment method to come up with a sequence of H 2-suboptimal state feedback gains. Also, although the sequence of H 2-suboptimal state feedback gains constructed by Algorithm A1 depends on a parameter ɛ, the construction procedure itself does not require explicitly the value of the parameter ɛ. Next, attention is focused on constructing a sequence of H 2-suboptimal observer-based measurement feedback controllers. Both full-order as well as reduced-order observer-based controllers are developed. For a given H 2-suboptimal state feedback gain, a sequence of observer gains for either a full-order or reduced-order observer can be constructed by merely dualizing Algorithm A1. The direct method of constructing H 2-suboptimal controllers developed here has a number of advantages over the perturbation method, e.g., it has the ability to design both full-order and reduced-order observer-based controllers while still maintaining throughout the design the computational simplicity of it.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021751016836
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Direct Method of Constructing H 2-Suboptimal Controllers: Discrete-Time Systems (1998)
    Springer
    Journal of optimization theory and applications 99 (1998), S. 617-653 
    Details
    ISSN: 1573-2878
    Keywords: Discrete-time systems ; H 2-suboptimal control ; direct methods ; low-gain design ; disturbance decoupling ; almost disturbance decoupling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract For discrete-time systems, an H 2-suboptimal control problem is defined and analyzed. Then, an algorithm called H 2-suboptimal state feedback gain sequence (Algorithm A1) is developed. Rather than utilizing a perturbation method, which is numerically stiff and computationally prohibitive, Algorithm A1 utilizes a direct eigenvalue assignment method to come up with a sequence of H 2-suboptimal state feedback gains. Also, although the sequence of H 2-suboptimal state feedback gains constructed by Algorithm A1 depends on a parameter ɛ, the construction procedure itself does not require explicitly the value of the parameter ɛ. Next, attention is focused on constructing a sequence of H 2-suboptimal estimator-based measurement feedback controllers. Three different estimator structures (prediction, current, and reduced-order estimators) are considered. For a given H 2-suboptimal state feedback gain, a sequence of estimator gains for any of the three estimators considered can be constructed by merely dualizing Algorithm A1. The direct method of constructing H 2-suboptimal controllers developed here has a number of advantages over the perturbation method, e.g., it has the ability to design all three types of estimator-based controllers while still maintaining throughout the design the computational simplicity of it. This paper is the discrete-time version of Ref. 1. There are some conceptual similarities as well as fundamental differences between the H 2-suboptimal control problems for continuous-time and discrete-time systems. The fundamental differences arise mainly from the fact that, in contrast to continuous-time systems, for discrete-time systems the infimum of the H 2-norm over the class of strictly proper controllers is in general different from the infimum of the H 2-norm over the class of proper controllers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1021703100906
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    Paper (German National Licenses)
    Fulltext
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