Search Results - (Author, Cooperation:S. J. Wright)

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  1. 1
    Staff View
    Publication Date:
    2015-12-25
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Biodiversity ; Databases, Factual ; Genetic Variation ; Internationality ; Models, Biological ; Nitrogen/analysis ; Organ Size ; *Phenotype ; Plant Development ; Plant Leaves/anatomy & histology ; *Plant Physiological Phenomena ; Plant Stems/anatomy & histology ; Plants/*anatomy & histology/classification ; Reproduction ; Seeds/anatomy & histology ; Selection, Genetic ; Species Specificity
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Staff View
    Publication Date:
    2015-12-25
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Forests ; Internationality ; Models, Biological ; *Phenotype ; Plant Leaves/physiology ; Trees/*anatomy & histology/growth & development/*physiology ; Wood/analysis
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    W. F. Laurance ; D. C. Useche ; J. Rendeiro ; M. Kalka ; C. J. Bradshaw ; S. P. Sloan ; S. G. Laurance ; M. Campbell ; K. Abernethy ; P. Alvarez ; V. Arroyo-Rodriguez ; P. Ashton ; J. Benitez-Malvido ; A. Blom ; K. S. Bobo ; C. H. Cannon ; M. Cao ; R. Carroll ; C. Chapman ; R. Coates ; M. Cords ; F. Danielsen ; B. De Dijn ; E. Dinerstein ; M. A. Donnelly ; D. Edwards ; F. Edwards ; N. Farwig ; P. Fashing ; P. M. Forget ; M. Foster ; G. Gale ; D. Harris ; R. Harrison ; J. Hart ; S. Karpanty ; W. J. Kress ; J. Krishnaswamy ; W. Logsdon ; J. Lovett ; W. Magnusson ; F. Maisels ; A. R. Marshall ; D. McClearn ; D. Mudappa ; M. R. Nielsen ; R. Pearson ; N. Pitman ; J. van der Ploeg ; A. Plumptre ; J. Poulsen ; M. Quesada ; H. Rainey ; D. Robinson ; C. Roetgers ; F. Rovero ; F. Scatena ; C. Schulze ; D. Sheil ; T. Struhsaker ; J. Terborgh ; D. Thomas ; R. Timm ; J. N. Urbina-Cardona ; K. Vasudevan ; S. J. Wright ; G. J. Arias ; L. Arroyo ; M. Ashton ; P. Auzel ; D. Babaasa ; F. Babweteera ; P. Baker ; O. Banki ; M. Bass ; I. Bila-Isia ; S. Blake ; W. Brockelman ; N. Brokaw ; C. A. Bruhl ; S. Bunyavejchewin ; J. T. Chao ; J. Chave ; R. Chellam ; C. J. Clark ; J. Clavijo ; R. Congdon ; R. Corlett ; H. S. Dattaraja ; C. Dave ; G. Davies ; M. Beisiegel Bde ; N. da Silva Rde ; A. Di Fiore ; A. Diesmos ; R. Dirzo ; D. Doran-Sheehy ; M. Eaton ; L. Emmons ; A. Estrada ; C. Ewango ; L. Fedigan ; F. Feer ; B. Fruth ; J. G. Willis ; U. Goodale ; S. Goodman ; J. C. Guix ; P. Guthiga ; W. Haber ; K. Hamer ; I. Herbinger ; J. Hill ; Z. Huang ; I. F. Sun ; K. Ickes ; A. Itoh ; N. Ivanauskas ; B. Jackes ; J. Janovec ; D. Janzen ; M. Jiangming ; C. Jin ; T. Jones ; H. Justiniano ; E. Kalko ; A. Kasangaki ; T. Killeen ; H. B. King ; E. Klop ; C. Knott ; I. Kone ; E. Kudavidanage ; J. L. Ribeiro ; J. Lattke ; R. Laval ; R. Lawton ; M. Leal ; M. Leighton ; M. Lentino ; C. Leonel ; J. Lindsell ; L. Ling-Ling ; K. E. Linsenmair ; E. Losos ; A. Lugo ; J. Lwanga ; A. L. Mack ; M. Martins ; W. S. McGraw ; R. McNab ; L. Montag ; J. M. Thompson ; J. Nabe-Nielsen ; M. Nakagawa ; S. Nepal ; M. Norconk ; V. Novotny ; S. O'Donnell ; M. Opiang ; P. Ouboter ; K. Parker ; N. Parthasarathy ; K. Pisciotta ; D. Prawiradilaga ; C. Pringle ; S. Rajathurai ; U. Reichard ; G. Reinartz ; K. Renton ; G. Reynolds ; V. Reynolds ; E. Riley ; M. O. Rodel ; J. Rothman ; P. Round ; S. Sakai ; T. Sanaiotti ; T. Savini ; G. Schaab ; J. Seidensticker ; A. Siaka ; M. R. Silman ; T. B. Smith ; S. S. de Almeida ; N. Sodhi ; C. Stanford ; K. Stewart ; E. Stokes ; K. E. Stoner ; R. Sukumar ; M. Surbeck ; M. Tobler ; T. Tscharntke ; A. Turkalo ; G. Umapathy ; M. van Weerd ; J. V. Rivera ; M. Venkataraman ; L. Venn ; C. Verea ; C. V. de Castilho ; M. Waltert ; B. Wang ; D. Watts ; W. Weber ; P. West ; D. Whitacre ; K. Whitney ; D. Wilkie ; S. Williams ; D. D. Wright ; P. Wright ; L. Xiankai ; P. Yonzon ; F. Zamzani
    Nature Publishing Group (NPG)
    Published 2012
    Staff View
    Publication Date:
    2012-07-27
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Agriculture/statistics & numerical data ; Animals ; *Biodiversity ; Conservation of Natural Resources/*statistics & numerical data ; Data Collection ; Ecology/statistics & numerical data ; Endangered Species/*statistics & numerical data ; Environmental Pollution/adverse effects/statistics & numerical data ; Fires/statistics & numerical data ; Forestry/statistics & numerical data ; Interviews as Topic ; Mining/statistics & numerical data ; Population Growth ; Rain ; Reproducibility of Results ; Research Personnel ; Surveys and Questionnaires ; Temperature ; Trees/*physiology ; *Tropical Climate
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    P. Hietz ; B. L. Turner ; W. Wanek ; A. Richter ; C. A. Nock ; S. J. Wright
    American Association for the Advancement of Science (AAAS)
    Published 2011
    Staff View
    Publication Date:
    2011-11-05
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    *Nitrogen Cycle ; Panama ; Plant Leaves ; Thailand ; *Trees ; *Tropical Climate
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  5. 5
    MUUD, P.J. ; HANCE, R.J. ; WRIGHT, S. J. L.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1983
    Staff View
    ISSN:
    1365-3180
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes:
    The persistence of isoproturon in soil in pot experiments was the same whether or not the soil contained growing wheat (Triticum aestivum L.) plants, Panllel) work with radioactive isoproturon showed that the breakdown products were the same in the presence and absence of plants. Persistence in the field was reasonably well predicted by a simulation model using the results of laboratory incubation studies and field meteorological data.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-3180.1983.tb00545.x

    Articles: DFG German National Licenses
  6. 6
    WRIGHT, S. J. L. ; GLARK, C. G.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1969
    Staff View
    ISSN:
    1365-3180
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-3180.1969.tb01451.x

    Articles: DFG German National Licenses
  7. 7
    MUDD, P. J. ; GREAVES, M. P. ; WRIGHT, S. J. L.

    Oxford, UK : Blackwell Publishing Ltd
    Published 1985
    Staff View
    ISSN:
    1365-3180
    Source:
    Blackwell Publishing Journal Backfiles 1879-2005
    Topics:
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes:
    In a field experiment, isoproturon (as Arelon) applied to soil at 2·5 kg ai ha−1 caused variable effects in the rhizosphere of winter wheat. These included transient increases and decreases in the number of bacterial and fungal propagules. No changes in soil levels of NH4+-N, NO2−-N, NO3−-N or PO43− were detected. Similar results were recorded with wheat grown in pots and in laboratory-incubated soil.Arelon (1–60 μg ai ml−1) did not affect pure cultures of bacteria but at the highest concentration (approximating to fifty times field rate) inhibited growth of some fungi. The value of laboratory and field experiments for studying effects of pesticides on micro-organisms is discussed. The results suggest that Arelon, in practical use, is unlikely to have harmful effects on the micro-organisms or fertility of soil.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1111/j.1365-3180.1985.tb00665.x

    Articles: DFG German National Licenses
  8. 8
    Kelley, C. T. ; Wright, S. J.
    Springer
    Published 1991
    Staff View
    ISSN:
    1436-4646
    Keywords:
    Sequential quadratic programming ; parameter identification ; 65K10 ; 65H10 ; 49D37
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Computer Science
    Mathematics
    Notes:
    Abstract We analyze the method of sequential quadratic programming for equality constrained minimization problems in Hilbert spaces of functions, and for the discrete approximations of such problems in the context of an elliptic parameter identification problem. We show how the discretization can be constructed so as to preserve the convergence behavior of the iterates for the infinite dimensional problem in the finite dimensional approximations. We use the structure of the parameter identification problem to reduce the size of the linear system for the SQP step and verify nondegeneracy of the constraints.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01586941

    Articles: DFG German National Licenses
  9. 9
    Monteiro, R. D. C. ; Wright, S. J.
    Springer
    Published 1995
    Staff View
    ISSN:
    1436-4646
    Keywords:
    Interior-point methods ; Primal-dual affine scaling ; Linear programming ; Linear complementarity
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Computer Science
    Mathematics
    Notes:
    Abstract We describe an interior-point algorithm for monotone linear complementarity problems in which primal-dual affine scaling is used to generate the search directions. The algorithm is shown to have global and superlinear convergence with Q-order up to (but not including) two. The technique is shown to be consistent with a potential-reduction algorithm, yielding the first potential-reduction algorithm that is both globally and superlinearly convergent.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01585562

    Articles: DFG German National Licenses
  10. 10
    Wright, S. J. L.
    Springer
    Published 1975
    Staff View
    ISSN:
    1432-0800
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Energy, Environment Protection, Nuclear Power Engineering
    Medicine
    Notes:
    Summary A simple, inexpensive method is described for the bio-assay of herbicides using micro-algae growing on agar plates. A result is obtainable in 2 days and the method is suitable for bio-detection of herbicide residues, or toxicity studies on soil or aquatic pollutants.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01685601

    Articles: DFG German National Licenses
  11. 11
    WRIGHT, S. J.

    [s.l.] : Nature Publishing Group
    Published 1926
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] IN a letter to NATURE (May 22, p. 720), Messrs. Millington and Thompson discussed the wedge-shaped fracture which ordinarily results from a tensile test on a single metallic crystal. On the assumption of uniform slip on a number of parallel planes they calculate the magnitude of an angle which ...
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1038/117891b0

    Articles: DFG German National Licenses
  12. 12
    Phillips, N. ; Oren, R. ; Zimmermann, R. ; Wright, S. J.
    Springer
    Published 1999
    Staff View
    ISSN:
    0931-1890
    Keywords:
    Key words Capacitance ; Time lag ; Transpiration ; Xylem sap flux
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes:
    Abstract  Using constant heat sap flow sensors, xylem water fluxes in ten tree species and two liana species were monitored for 5–10 days during the beginning of the wet season in May, 1993. For a subset of the trees, a branch was also monitored at the top of the crown for 5 days. Xylem flux (J S) was related diurnally in all plants to vapor pressure deficit (D) measured within the upper-third of the canopy, and to incoming shortwave radiation R S above the canopy. Cross-correlation analysis was used to estimate time lags between diurnal patterns of J S and D or R S, and between J S in stems and branches. The maximum correlation coefficient from cross-correlation of J S with R S (range=0.57–0.92) was often higher than the maximum of J S with D (range=0.43–0.89), indicating that diurnal J S was more dependent on R S than D. Time lags (lag corresponding to maximum correlation) of J S at stem-base with D was shorter (0–45 min) than with radiation (5–115 min), highly variable within a species, and uncorrelated to the height or exposure of tree crowns or liana in the canopy. On a stand level, not accounting for the diel lag between stem sap flux and canopy flux resulted in errors in estimated canopy transpiration of up to 30%.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/s004680050216

    Articles: DFG German National Licenses
  13. 13
    Wright, S. J. 〈MA〉

    London : Periodicals Archive Online (PAO)
    Published 1939
    Staff View
    ISSN:
    0958-0433
    Topics:
    Art History
    Notes:
    PROCEEDINGS OF THE SOCIETY
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:q549-1939-087-10-000004

    Articles: DFG German National Licenses
  14. 14
    WRIGHT, s. J.

    London : Periodicals Archive Online (PAO)
    Published 1951
    Staff View
    ISSN:
    0958-0433
    Topics:
    Art History
    Notes:
    PROCEEDINGS OF THE SOCIETY
    URL:
    http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:q549-1951-099-49-000006

    Articles: DFG German National Licenses
  15. 15
    Valases, C. ; Wright, S. J. ; Catravas, G. N.
    Springer
    Published 1980
    Staff View
    ISSN:
    1432-1106
    Keywords:
    Cyclic nucleotides ; Hypothalamus ; Diurnal changes
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Summary The concentrations of cAMP and cGMP in the rat hypothalamus varied considerably over a 24-h period. The cAMP levels were found to be relatively higher in the morning and lower during the afternoon and night. Cyclic GMP levels reached highest values during the period of darkness and were lowest during the day. Deprivation of food did not have any appreciable effect on the pattern of these changes.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00237790

    Articles: DFG German National Licenses
  16. 16
    Wright, S. J. ; Howe, H. F.
    Springer
    Published 1987
    Staff View
    ISSN:
    1432-1939
    Keywords:
    Colorado Desert ; Community ecology ; Interference ; Plant dispersion ; Plant mortality
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Notes:
    Summary We tested for intraspecific interference among Colorado Desert shrubs using an integrated analysis of spatial pattern and juvenile mortality. The data set included 7,000 woody perennials of 24 species in a mapped hectare of Joshua Tree National Monument, California. The site is dominated by Ambrosia dumosa (62.0% of the stems), with Larre tridentata a conspicuous secondary species (2.3% of the stems). Analyses of static pattern for common species showed: (1) aggregated adults and juveniles for Ambrosia dumosa, Erigonum fasciculatum, Mirabilis bigelovii, and Sphaeralcea ambigua, with more aggregation among juveniles than adults; (2) randomly distributed adults and juveniles for Krameria grayi, Opuntia rasmosissima, Simondsia chinensis, and Yucca schidigera. The summed volumes and distances between nearest conspecific neighbors were positively correlated for Ambrosia dumosa and Larrea tridentata, but not significantly correlated for eight remaining species with ≥100 individuals. Static pattern suggests only weak evidence for negative interactions in Ambrosia and Larrea, and little evidence for other species. Alternative mechanisms other than negative interaction that could give rise to these static patterns are discussed. Juvenile mortality was documented for four common species (Ambrosia dumosa, Eriogonum fasciculatum, Mirabilis bigelovii, and Sphaeralcea ambigua) that experienced substantial mortality. Analyses show: (1) the proportion of individuals that died was independent of the initial density of conspecifics; (2) distance to conspecific adults did not differ for juveniles that died versus those that survived; and (3) death was no more likely for juveniles that contacted other plants than for those that were isolated. The exception was a vine, Mirabilis bigelovii, whose juveniles survived better in contact with other plants. In sum, neither spatial pattern nor patterns of mortality showed clear evidence of negative intraspecific interference.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00379414

    Articles: DFG German National Licenses
  17. 17
    Leigh, E. G. ; Wright, S. J. ; Herre, E. A. ; Putz, F. E.
    Springer
    Published 1993
    Staff View
    ISSN:
    1573-8477
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01237750

    Articles: DFG German National Licenses
  18. 18
    Wright, S. J.
    Springer
    Published 1990
    Staff View
    ISSN:
    1573-2878
    Keywords:
    Linear programming ; method of multipliers ; convex quadratic programming
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mathematics
    Notes:
    Abstract We describe the application of proximal point methods to the linear programming problem. Two basic methods are discussed. The first, which has been investigated by Mangasarian and others, is essentially the well-known method of multipliers. This approach gives rise at each iteration to a weakly convex quadratic program which may be solved inexactly using a point-SOR technique. The second approach is based on the proximal method of multipliers, originally proposed by Rockafellar, for which the quadratic program at each iteration is strongly convex. A number of techniques are used to solve this subproblem, the most promising of which appears to be a two-metric gradient-projection approach. Convergence results are given, and some numerical experience is reported.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00939565

    Articles: DFG German National Licenses
  19. 19
    Wright, S. J.
    Springer
    Published 1993
    Staff View
    ISSN:
    1573-2878
    Keywords:
    Interior point algorithms ; optimal control ; banded linear systems
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mathematics
    Notes:
    Abstract We show that recently developed interior point methods for quadratic programming and linear complementarity problems can be put to use in solving discrete-time optimal control problems, with general pointwise constraints on states and controls. We describe interior point algorithms for a discrete-time linear-quadratic regulator problem with mixed state/control constraints and show how they can be efficiently-incorporated into an inexact sequential quadratic programming algorithm for nonlinear problems. The key to the efficiency of the interior-point method is the narrow-banded structure of the coefficient matrix which is factorized at each iteration.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00940784

    Articles: DFG German National Licenses
  20. 20
    Rao, C. V. ; Wright, S. J. ; Rawlings, J. B.
    Springer
    Published 1998
    Staff View
    ISSN:
    1573-2878
    Keywords:
    Model predictive control ; interior-point methods ; Riccati equation
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Mathematics
    Notes:
    Abstract We present a structured interior-point method for the efficient solution of the optimal control problem in model predictive control. The cost of this approach is linear in the horizon length, compared with cubic growth for a naive approach. We use a discrete-time Riccati recursion to solve the linear equations efficiently at each iteration of the interior-point method, and show that this recursion is numerically stable. We demonstrate the effectiveness of the approach by applying it to three process control problems.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1021711402723

    Articles: DFG German National Licenses