Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • 2015-2019  (2)
  • 2005-2009  (88)
  • 1
    Book
    Book
    ¬The¬ traveling salesman problem / (2006)
    Princeton [u.a.] :Princeton Univ. Press,
    Details
    Title: ¬The¬ traveling salesman problem /
    Contributer: Applegate, David L. , Bixby, Robert E. , Chvatal, Vasek , Cook, William J.
    Publisher: Princeton [u.a.] :Princeton Univ. Press,
    Year of publication: 2006
    Pages: IX, 593 S. : , Ill., graph. Darst.
    Series Statement: Princeton series in applied mathematics
    ISBN: 0-691-12993-2 , 978-0-691-12993-8
    Type of Medium: Book
    Language: English
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    ZIB Catalog
    Zuse Institute Berlin get availability status
  • 2
    facet.materialart.
    Unknown
    Presolve Reductions in Mixed Integer Programming (2019)
    Details
    Publication Date: 2021-08-05
    Description: Mixed integer programming has become a very powerful tool for modeling and solving real-world planning and scheduling problems, with the breadth of applications appearing to be almost unlimited. A critical component in the solution of these mixed-integer programs is a set of routines commonly referred to as presolve. Presolve can be viewed as a collection of preprocessing techniques that reduce the size of and, more importantly, improve the ``strength'' of the given model formulation, that is, the degree to which the constraints of the formulation accurately describe the underlying polyhedron of integer-feasible solutions. As our computational results will show, presolve is a key factor in the speed with which we can solve mixed-integer programs, and is often the difference between a model being intractable and solvable, in some cases easily solvable. In this paper we describe the presolve functionality in the Gurobi commercial mixed-integer programming code. This includes an overview, or taxonomy of the different methods that are employed, as well as more-detailed descriptions of several of the techniques, with some of them appearing, to our knowledge, for the first time in the literature.
    Language: English
    Type: article , doc-type:article
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    OPUS
  • 3
    facet.materialart.
    Unknown
    Presolve Reductions in Mixed Integer Programming (2016)
    Details
    Publication Date: 2021-08-05
    Description: Mixed integer programming has become a very powerful tool for modeling and solving real-world planning and scheduling problems, with the breadth of applications appearing to be almost unlimited. A critical component in the solution of these mixed-integer programs is a set of routines commonly referred to as presolve. Presolve can be viewed as a collection of preprocessing techniques that reduce the size of and, more importantly, improve the ``strength'' of the given model formulation, that is, the degree to which the constraints of the formulation accurately describe the underlying polyhedron of integer-feasible solutions. As our computational results will show, presolve is a key factor in the speed with which we can solve mixed-integer programs, and is often the difference between a model being intractable and solvable, in some cases easily solvable. In this paper we describe the presolve functionality in the Gurobi commercial mixed-integer programming code. This includes an overview, or taxonomy of the different methods that are employed, as well as more-detailed descriptions of several of the techniques, with some of them appearing, to our knowledge, for the first time in the literature.
    Language: English
    Type: reportzib , doc-type:preprint
    Format: application/pdf
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    OPUS
  • 4
    Electronic Resource
    Electronic Resource
    Introduction: Population & Political Theory (2005)
    Oxford, UK and Malden, USA : Blackwell Publishing Ltd.
    The @journal of political philosophy 13 (2005), S. 0 
    Details
    ISSN: 1467-9760
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Philosophy , Political Science
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1467-9760.2005.00228.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Testing the Rules of Justice: The Effects of Frame-of-Reference and Pre-Test Validity Information on Personality Test Responses and Test Perceptions (2005)
    Oxford, UK : Blackwell Publishing
    International journal of selection and assessment 13 (2005), S. 0 
    Details
    ISSN: 1468-2389
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: The resurgence of personality tests in selection has sparked interest in factors that may increase the utility and acceptability of these tests. Following a justice framework, the present study explores two possible methods for improving the psychometric properties and test-taker perceptions of a widely used measure of personality, the NEO-Five Factor Inventory. The first manipulation altered respondents' frame-of-reference (FOR) by adding “at-work” tags to the personality test. The second provided information about the validity and appropriateness of the personality test for selection. Under the controlled setting of a laboratory experiment, participants (n=345) were randomly assigned to one of the conditions in the following between-subjects design: 2 (FOR: work specific vs. generic) × 2 (information: validity vs. control). The FOR manipulation produced consistent effects on the personality test responses, but in contrast to recent claims, produced no effect on test perceptions. Alternatively, the information manipulation primarily influenced job-relatedness perceptions, but had a modest negative effect on the psychometric properties of the personality test. These results show some possibilities, and difficulties, for enhancing perceptions of personality tests. They also have important implications for justice theory because they suggest that interactions among the procedural justice rules may yield unexpected and contradictory effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0965-075X.2005.00301.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    CHOP/GADD153 is a mediator of apoptotic death in substantia nigra dopamine neurons in an in vivo neurotoxin model of parkinsonism (2005)
    Oxford, UK : Blackwell Science Ltd
    Journal of neurochemistry 95 (2005), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: There is increasing evidence that neuron death in neurodegenerative diseases, such as Parkinson's disease, is due to the activation of programmed cell death. However, the upstream mediators of cell death remain largely unknown. One approach to the identification of upstream mediators is to perform gene expression analysis in disease models. Such analyses, performed in tissue culture models induced by neurotoxins, have identified up-regulation of CHOP/GADD153, a transcription factor implicated in apoptosis due to endoplasmic reticulum stress or oxidative injury. To evaluate the disease-related significance of these findings, we have examined the expression of CHOP/GADD153 in neurotoxin models of parkinsonism in living animals. Nuclear expression of CHOP protein is observed in developmental and adult models of dopamine neuron death induced by intrastriatal injection of 6-hydroxydopamine (6OHDA) and in models induced by 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP). CHOP is a mediator of neuron death in the adult 60HDA model because a null mutation results in a reduction in apoptosis. In the chronic MPTP model, however, while CHOP is robustly expressed, the null mutation does not protect from the loss of neurons. We conclude that the role of CHOP depends on the nature of the toxic stimulus. For 6OHDA, an oxidative metabolite of dopamine, it is a mediator of apoptotic death.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.2005.03428.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Use of uterine EMG and cervical LIF in monitoring pregnant patients (2005)
    Oxford, UK and Malden, USA : Blackwell Science Ltd
    BJOG 112 (2005), S. 0 
    Details
    ISSN: 1471-0528
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Objectives  Review the uterine electromyography (EMG) and cervical light-induced fluorescence (LIF) devices and their role in the evaluation of uterine and cervical function in comparison with present methods.Design  Review of recent studies.Setting  University of Texas Medical Branch Labour and Delivery Clinics.Population  Various groups of pregnant women.Methods  We have developed and recently improved non-invasive methods to evaluate quantitatively uterine electrical signals from the abdominal surface and cervical collagen.Main outcome measures  Uterine EMG utilised power density spectrum (PDS) peak frequency and total power (P0) and cervical LIF utilising LIF ratio.Results  Human studies indicate that uterine and cervical performance can be successfully monitored during pregnancy using EMG and LIF, respectively, and the assessment of uterine and cervical function can both be used to influence patient management in a variety of conditions associated with labour, more than can currently available methods.Conclusions  The potential benefits of the proposed instrumentation include the following: a reduction in the rate of preterm birth, improved maternal and perinatal outcome, better monitoring of treatment, decreased caesarean section rate and better research methods for understanding uterine and cervical function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-0528.2005.00596.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Breaking Records: 100 Years of Hits (2005)
    Malden, USA : Blackwell Publishing Inc
    The @journal of popular culture 38 (2005), S. 0 
    Details
    ISSN: 1540-5931
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Ethnic Sciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-5931.2005.00192.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Book Reviews (2005)
    Oxford, UK : Blackwell Publishing
    The @journal of popular culture 38 (2005), S. 0 
    Details
    ISSN: 1540-5931
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Ethnic Sciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0022-3840.2005.130_14.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Unusual QRS Morphology on ECG: A Rare Condition and an Interesting Response to Pacing (2005)
    350 Main Street , Malden , MA 02148-5018 , USA and 9600 Garsington Road , Oxford OX4 2DQ , UK . : Blackwell Science Inc
    Pacing and clinical electrophysiology 28 (2005), S. 0 
    Details
    ISSN: 1540-8159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We present the interesting case of a young man with borderline wide QRS complexes noted on electrocardiogram (ECG). The diagnosis of an unusual form of preexcitation was reached using observations from intracardiac tracings at electrophysiology study. Atrial pacing consistently resulted in further widening of the first conducted QRS complex, and the physiology underlying this unusual finding is explored.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1540-8159.2005.00177.x
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...