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You searched for subject:(multiple step test). Showing records 1 – 3 of 3 total matches.

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Temple University

1. Yang, Zijiang. New Step Down Procedures for Control of the Familywise Error Rate.

Degree: PhD, 2008, Temple University

Statistics

The main research topic in this dissertation is the development of the closure method of multiple testing procedures. Considering a general procedure that allows the underlying test statistics as well as the associated parameters to be dependent, we first propose a step-down procedure controlling the FWER, which is defined as the probability of committing at least one false discovery. Holm (1979) first proposed a step-down procedure for multiple hypothesis testing with a control of the familywise error rate (FWER) under any kind of dependence. Under the normal distributional setup, Seneta and Chen (2005) sharpened the Holm procedure by taking into account the correlations between the test statistics. In this dissertation, the Seneta-Chen procedure is further modified yielding a more powerful FWER controlling procedure. We then advance our research and propose another step-down procedure to control the generalized FWER (k-FWER), which is defined as the probability of making at least k false discoveries. We compare our proposed k-FWER procedure with the Lehmann and Romano (2005) procedure. The proposed k-FWER procedure is more powerful, particularly when there is a strong dependence in the tests. When the proportion of true null hypotheses is expected to be small, the traditional tests are usually conservative by a factor associated with pi0, which is the proportion of true null hypotheses among all null hypotheses. Under independence, two procedures controlling the FWER and the k-FWER are proposed in this dissertation. Simulations are carried out to show that our procedures often provide much better FWER or k-FWER control and power than the traditional procedures.

Temple University – Theses

Advisors/Committee Members: Sarkar, S. K. (Sanat K.), Raghavarao, Damaraju, Hsuan, Francis C., Chang, Steven.

Subjects/Keywords: Statistics; Multiple Comparisons; Familywise Error Rate; Generalized Familywise Error Rate; Closure Method; Step-down Test

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Yang, Z. (2008). New Step Down Procedures for Control of the Familywise Error Rate. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,20124

Chicago Manual of Style (16th Edition):

Yang, Zijiang. “New Step Down Procedures for Control of the Familywise Error Rate.” 2008. Doctoral Dissertation, Temple University. Accessed February 28, 2021. http://digital.library.temple.edu/u?/p245801coll10,20124.

MLA Handbook (7th Edition):

Yang, Zijiang. “New Step Down Procedures for Control of the Familywise Error Rate.” 2008. Web. 28 Feb 2021.

Vancouver:

Yang Z. New Step Down Procedures for Control of the Familywise Error Rate. [Internet] [Doctoral dissertation]. Temple University; 2008. [cited 2021 Feb 28]. Available from: http://digital.library.temple.edu/u?/p245801coll10,20124.

Council of Science Editors:

Yang Z. New Step Down Procedures for Control of the Familywise Error Rate. [Doctoral Dissertation]. Temple University; 2008. Available from: http://digital.library.temple.edu/u?/p245801coll10,20124


Brno University of Technology

2. Zapletal, Josef. Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron.

Degree: 2019, Brno University of Technology

The thesis is focused on assessment of fatigue behaviour of austempered ductile iron with nodular graphite. Optimal period of transformation was determined based on the best combination of stress and strain characteristics established by tensile test. Cyclic response and low-cycle fatigue life were studied under both stress-control and longitudinal strain-control mode at room temperature. For both modes, shapes of cyclic hardening curves are dependent on stress amplitude. Cyclic deformation curves (CDC) were fitted by power regression function. Results were compared with CDC established by multiple step test in both modes with verification of the influence of cyclic creep (high stress levels, stress-control mode). Experimental data of S-N curves are in agreement with the Manson-Coffin and the Basquin law. Fatigue and cyclic parameters were compared. Fatigue life time in high-cycle fatigue region was determined. Experimental data were fitted by suitable regression functions. Regression parameters and fatigue limit were established by means of each regression function. Experimental data in low- and high-cycle fatigue regions were used to construct S-N curve and to determine relevant parameters. Discontinuity of experimental data was not observed. Low-cycle fatigue behaviour was predicted. Approximation of tolerance bands was realized in high-cycle and both high and low cycle fatigue regions. Advisors/Committee Members: Věchet, Stanislav (advisor), Bokůvka, Otakar (referee), Kunz, Ludvík (referee).

Subjects/Keywords: Litina s kuličkovým grafitem; ADI; cyklická plasticita; zkrácená cyklická deformační křivka; nízkocyklová únava; vysokocyklová únava; regresní funkce; Ductile Cast Iron; ADI; cyclic plasticity; multiple step test; low-cycle fatigue; high-cycle fatigue; regression function

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Zapletal, J. (2019). Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/6271

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Zapletal, Josef. “Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron.” 2019. Thesis, Brno University of Technology. Accessed February 28, 2021. http://hdl.handle.net/11012/6271.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Zapletal, Josef. “Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron.” 2019. Web. 28 Feb 2021.

Vancouver:

Zapletal J. Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/11012/6271.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zapletal J. Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/6271

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


Brno University of Technology

3. Zapletal, Josef. Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron.

Degree: 2014, Brno University of Technology

The thesis is focused on assessment of fatigue behaviour of austempered ductile iron with nodular graphite. Optimal period of transformation was determined based on the best combination of stress and strain characteristics established by tensile test. Cyclic response and low-cycle fatigue life were studied under both stress-control and longitudinal strain-control mode at room temperature. For both modes, shapes of cyclic hardening curves are dependent on stress amplitude. Cyclic deformation curves (CDC) were fitted by power regression function. Results were compared with CDC established by multiple step test in both modes with verification of the influence of cyclic creep (high stress levels, stress-control mode). Experimental data of S-N curves are in agreement with the Manson-Coffin and the Basquin law. Fatigue and cyclic parameters were compared. Fatigue life time in high-cycle fatigue region was determined. Experimental data were fitted by suitable regression functions. Regression parameters and fatigue limit were established by means of each regression function. Experimental data in low- and high-cycle fatigue regions were used to construct S-N curve and to determine relevant parameters. Discontinuity of experimental data was not observed. Low-cycle fatigue behaviour was predicted. Approximation of tolerance bands was realized in high-cycle and both high and low cycle fatigue regions. Advisors/Committee Members: Věchet, Stanislav (advisor).

Subjects/Keywords: Litina s kuličkovým grafitem; ADI; cyklická plasticita; zkrácená cyklická deformační křivka; nízkocyklová únava; vysokocyklová únava; regresní funkce; Ductile Cast Iron; ADI; cyclic plasticity; multiple step test; low-cycle fatigue; high-cycle fatigue; regression function

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Zapletal, J. (2014). Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/4211

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Zapletal, Josef. “Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron.” 2014. Thesis, Brno University of Technology. Accessed February 28, 2021. http://hdl.handle.net/11012/4211.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Zapletal, Josef. “Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron.” 2014. Web. 28 Feb 2021.

Vancouver:

Zapletal J. Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron. [Internet] [Thesis]. Brno University of Technology; 2014. [cited 2021 Feb 28]. Available from: http://hdl.handle.net/11012/4211.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zapletal J. Nízkocyklové a vysokocyklové únavové vlastnosti ADI: Low Cycle and High Cycle Fatigue Properties of Austempered Ductile Iron. [Thesis]. Brno University of Technology; 2014. Available from: http://hdl.handle.net/11012/4211

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.