Index Catalog // ScholarsArchive@OSU

Prey-stage preference in phytoseiid mites

Creator:: Blackwood, J. Scott
Abstract:: Knowledge of how individual organisms behave in their environment can provide a greater understanding of population dynamics. In a predator-prey system, the choices made by predators when foraging for prey are important aspects of behavior. Particularly in the case of a stage-structured prey population, how the predator selects prey stages...
Resource Type:: Dissertation
Full Text:: . Many thanks go to my dissertation committee, Dr. Philippe Rossignol, Dr. Jadwiga Giebultowicz and Dr

Kenward-Roger approximate F test for fixed effects in mixed linear models

Creator:: Alnosaier, Waseem S.
Abstract:: For data following a balanced mixed Anova model, the standard Anova method typically leads to exact F tests of the usual hypotheses about fixed effects. However, for most unbalanced designs with most hypotheses, the Anova method does not produce exact tests, and approximate methods are needed. One approach to approximate...
Resource Type:: Dissertation
Full Text:: Smythe and Professor Daniel Schafer for their help and concern. I also thank Professor Philippe

Biology of the two external Acarapis species of honey bees : Acarapis dorsalis Morgenthaler and Acarapis externus Morgenthaler (Acari: Tarsonemidae)

Creator:: Ibay, Lilia Armendez
Abstract:: The biology of the two external Acarapis mites of honey bees, Acarapis dorsalis Morgenthaler and Acarapis externus Morgenthaler was studied. It was observed that both Acarapis species have similar developmental period (8-9 days) with males emerging earlier than females. Mite load and infestation rate of A. dorsalis decreased as bees...
Resource Type:: Masters Thesis
Full Text:: extended to Dr. Gerald Krantz, Dr. Philippe Rossignol, Dr. Roger Petersen and Dr. Jeff Morrel for serving

Two epidemiological studies in central Haiti

Creator:: Bonnlander, Heinke P.
Abstract:: Two epidemiological studies, designed to expand our knowledge of morbidity and mortality indicators concerning malaria and Bacillus Calmette-Guerin vaccination in the Hospital Albert Schweitzer health district located in Central Haiti's Artibonite Valley, are presented. The hospital serves a rural population of 190,000 in its 610 square mile district. A large...
Resource Type:: Dissertation
Full Text:: . Philippe Rossignol and Dr. C. Chi for their support. Mrs. W. L. Mellon and William Dunn for permission to

Sea urchin-kelp forest communities in marine reserves and areas of exploitation : community interactions, populations, and metapopulation analyses

Creator:: Moctezuma, Gabriela Montaño
Abstract:: Marine ecosystems can be exposed to natural and anthropogenic disturbances that can lead to ecological failures. Marine reserves have been lately suggested to protect marine populations and communities that have been affected by habitat destruction and harvest. This research evaluates the potential role of two marine reserves established in Oregon...
Resource Type:: Dissertation
Full Text:: of modeling. Dr. Philippe Rossignol made my introduction to modeling easy and enjoyable. It has

Triangular billiards surfaces and translation covers

Creator:: Schmurr, Jason Peter
Abstract:: We identify all translation covers among triangular billiards surfaces. Our main tools are the J-invariant of Kenyon and Smillie and a property of triangular billiards surfaces, which we call fingerprint type, that is invariant under balanced translation covers.
Resource Type:: Dissertation

Effects of individualized examples and personalized contexts in computer-based adaptive teaching of algebra word problems

Creator:: Lwo, Lwun-syin
Abstract:: The purpose of the present investigation was to develop an adaptive teaching model for an interactive computer-assisted instruction (CAT) program and to evaluate the effectiveness of the implementation of individualized examples or individualized examples in personalized contexts. Translating word problems into equations provided the context for the CAT investigation. Four...
Resource Type:: Dissertation

Qualitative analysis of the community matrix

Creator:: Dambacher, Jeffrey M.
Abstract:: This work sets forth a reformulation of Levins' loop analysis for the qualitative modeling of complex dynamical systems. Relationships between members of ecological communities can be analyzed through a qualitatively specified community matrix, whereby +1, -1, or 0 represent effects of one species upon another. A contribution is made to...
Resource Type:: Dissertation

Integrative risk analysis of vector-borne disease

Creator:: Orme Zavaleta, Jennifer
Abstract:: In this dissertation I explore the application of two novel modeling techniques for improving risk analysis of vector-borne disease and discuss their potential use in integrating environmental risk assessment that guides environmental and public health decisions. Techniques for analyzing risk have been considered inadequate due to a lack of understanding...
Resource Type:: Dissertation
Full Text:: ACKNOWLEDGEMENTS I thank Drs. Lawrence Curtis, W. Daniel Edge, Annette MacKay Rossignol, Philippe Rossignol

Isozymic and cytological studies on populations of the introduced bee species, Megachile (Eutricharaea) rotundata and M. (Eutricharaea) apicalis

Creator:: Chen, Xiaoshe
Abstract:: Thirteen New World populations of Megachile rotundata and M. apicalis and two Old World populations of M. rotundata were analyzed at 23 enzyme loci using cellulose acetate electrophoresis. Conventional and G- or C-banded karyotypes were also examined in these populations. The principal findings are (1) No differences were found in...
Resource Type:: Dissertation
Full Text:: ; Glenn Fisher and Philippe A. Rossignol of the Department of Entomology; Paul A. Roberts of the

ScholarsArchive@OSU

Prey-stage preference in phytoseiid mites

Kenward-Roger approximate F test for fixed effects in mixed linear models

Biology of the two external Acarapis species of honey bees : Acarapis dorsalis Morgenthaler and Acarapis externus Morgenthaler (Acari: Tarsonemidae)

Two epidemiological studies in central Haiti

Sea urchin-kelp forest communities in marine reserves and areas of exploitation : community interactions, populations, and metapopulation analyses

Triangular billiards surfaces and translation covers

Effects of individualized examples and personalized contexts in computer-based adaptive teaching of algebra word problems

Qualitative analysis of the community matrix

Integrative risk analysis of vector-borne disease

Isozymic and cytological studies on populations of the introduced bee species, Megachile (Eutricharaea) rotundata and M. (Eutricharaea) apicalis

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