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  • 1
    Electronic Resource
    Electronic Resource
    Multicomponent magnetizations in the Foyers Old Red Sandstone (northern Scotland) and their bearing on lateral displacements along the Great Glen Fault (1990)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 102 (1990), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The Foyers Sandstone, a constituent of the Old Red Sandstone of northern Scotland, located on the eastern flank of the Great Glen Fault, has yielded a multicomponent palaeomagnetic structure. the principal magnetization (called the B component), with in situ mean direction D, I−185°, +8°; α95= 2.7°, post-dates the local ‘mid’-Devonian (Acadian) tectonic event, but this direction corresponds well with characteristic directions displayed by Devonian and Lower Carboniferous rocks of Scotland. the most significant overprinted component, the A2 magnetization, with in situ mean direction D, I= 194°, −27°; α95= 4.1°, has a more patchy occurrence than the B remanence, the strongest development of A2 being observed at sites that are situated close to the Great Glen Fault zone. the A2 direction is consistent with a Hercynian age. A third magnetization, the Al component, of suggested Lower Tertiary age, has been found at one of the sites close to the fault zone. the A2 and B remanences support previously proposed declination discordances in corresponding magnetizations across the Great Glen Fault. It is concluded that the Foyers Sandstone developed its multicomponent magnetization through repeated tectonic events on the Great Glen Fault in Acadian, Hercynian and Alpine times respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1990.tb00537.x
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetization history of the Upper Silurian Dingle Group, SW Ireland (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 114 (1993), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The Dingle Group, a continental Upper Silurian redbed succession in SW Ireland, has yielded a multicomponent palaeomagnetic record. The oldest magnetization retrieved, the B component, with in situ mean direction of D/I= 191/+9; K= 40; α95= 3.6°; N= 41, post-dates the local late Silurian-mid-Devonian (Acadian) tectonic deformation and is in very good agreement with the prevailing remanences in other Caledonian rocks of western Ireland. An overprinted ‘A’ component with in situ mean direction D/I= 194/-16; K= 53; α95= 3.1°; N= 41, is about as prevalent as the B component and was probably acquired in late Palaeozoic (Kiaman) times. By comparison with other published data, including a positive fold test for corresponding magnetization of Upper Silurian redbeds in Clare Island, it is concluded that the flat-lying B field (relative to Britain and Ireland) was in existence at least from the late Silurian to late Middle Carboniferous, i.e. covering a minimum time span of 100 M. yr.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1993.tb06997.x
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  • 3
    Electronic Resource
    Electronic Resource
    On the British Siluro-Devonian palaeomagnetic field problem: reply to comments by T. H. Torsvik et al. (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 105 (1991), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: We appreciate this opportunity to clarify our position on a few central issues of this debate. By our rejection of a number of Palaeozoic palaeomagnetic data from Scotland (Storetvedt et al. 1990), Torsvik et al. accuse us of disregarding all classical field tests. We have never disregarded any classical field test, but would argue that such tests have sometimes been misapplied. Also, we obviously have not rejected all earlier British ‘Siluro-Devonian’data, including Scottish results (e.g. table 3, Storetvedt et al. 1990).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1991.tb06726.x
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  • 4
    Electronic Resource
    Electronic Resource
    Ground-Water Potential Evaluation of West Godavari District, Andhra Pradesh State, India—A GIS Approach (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Ground water 34 (1996), S. 0 
    Details
    ISSN: 1745-6584
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Geosciences
    Notes: Voluminous geoscientific data related to various ground-water parameters provide enormous scope for using the Geographic Information System (GIS) to draw meaningful conclusions on the ground-water propsects of an area. To demonstrate the efficacy of the GIS for ground-water studies, information on the parameters controlling ground water such as lithology, geomorphology, structure, and recharge condition of West Godavari district were analyzed using ARC/INFO GIS. Existing maps and records were used as data. An evaluation of ground-water potential and generation of a map showing three major hydrogeological conditions with distinct ground-water prospects which would serve as a basic tool in the exploitation of ground-water resources of the district has resulted. The study has also revealed that the GIS techniques are time/cost-effective and can be employed successfully in the planning stages of a ground-water exploration programme. In addition, the GIS data generated for the study of ground-water prospects can be updated and used for the planning and management of ground-water resources of the district.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-6584.1996.tb01891.x
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  • 5
    Electronic Resource
    Electronic Resource
    Structure of 6-acetoxycoumarin: topochemical photodimerization and analysis of acetoxy...acetoxy interactions in the solid state (1988)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 44 (1988), S. 307-311 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270187006905
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  • 6
    Electronic Resource
    Electronic Resource
    Morpholinium nitrate (1976)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 32 (1976), S. 3140-3142 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567740876009795
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  • 7
    Electronic Resource
    Electronic Resource
    Structure of 7-methyl-1(2)a,1(6)a,3(4)a-trihomocubane-1(6)a,3(4)a-dione, C12H12O2. A case of enantiomeric and rotational disorder (1984)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 40 (1984), S. 1581-1584 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270184008787
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  • 8
    Electronic Resource
    Electronic Resource
    Structure of 2,4,N-trinitroanilinoacetic acid (1990)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 46 (1990), S. 1709-1711 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270189012540
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  • 9
    Electronic Resource
    Electronic Resource
    A copositive Q-matrix which is notR 0 (1993)
    Springer
    Mathematical programming 61 (1993), S. 131-135 
    Details
    ISSN: 1436-4646
    Keywords: Linear complementarity problem ; copositive ; Q-matrix
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract Jeter and Pye gave an example to show that Pang's conjecture, thatL 1 ⋂Q ⊂R 0, is false while Seetharama Gowda showed that the conjecture is true for symmetric matrices. It is known thatL 1-symmetric matrices are copositive matrices. Jeter and Pye as well as Seetharama Gowda raised the following question: Is it trueC 0 ⋂Q ⊂R 0? In this note we present an example of a copositive Q-matrix which is notR 0. The example is based on the following elementary proposition: LetA be a square matrix of ordern. SupposeR 1 =R 2 whereR i stands for theith row ofA. Further supposeA 11 andA 22 are Q-matrices whereA ii stands for the principal submatrix omitting theith row andith column fromA. ThenA is a Q-matrix.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01582143
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  • 10
    Electronic Resource
    Electronic Resource
    Fully copositive matrices (1998)
    Springer
    Mathematical programming 82 (1998), S. 401-411 
    Details
    ISSN: 1436-4646
    Keywords: Linear complementarity problem ; Incidence ; Matrix classes ; Principal pivoting
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science , Mathematics
    Notes: Abstract The class of fully copositive (C 0 f ) matrices introduced in [G.S.R. Murthy, T. Parthasarathy, SIAM Journal on Matrix Analysis and Applications 16 (4) (1995) 1268–1286] is a subclass of fully semimonotone matrices and contains the class of positive semidefinite matrices. It is shown that fully copositive matrices within the class ofQ 0-matrices areP 0-matrices. As a corollary of this main result, we establish that a bisymmetricQ 0-matrix is positive semidefinite if, and only if, it is fully copositive. Another important result of the paper is a constructive characterization ofQ 0-matrices within the class ofC 0 f . While establishing this characterization, it will be shown that Graves's principal pivoting method of solving Linear Complementarity Problems (LCPs) with positive semidefinite matrices is also applicable toC 0 f ∩Q 0 class. As a byproduct of this characterization, we observe that aC 0 f -matrix is inQ 0 if, and only if, it is completelyQ 0. Also, from Aganagic and Cottle's [M. Aganagic, R.W. Cottle, Mathematical Programming 37 (1987) 223–231] result, it is observed that LCPs arising fromC 0 f ∩Q 0 class can be processed by Lemke's algorithm. © 1998 The Mathematical Programming Society, Inc. Published by Elsevier Science B.V.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01580077
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