When people think of fossils, they generally imagine the bones of large, charismatic animals. However, small mammals are an ecologically important group of organisms that show up frequently in the fossil record, and can frequently function as indicators for local environmental and ecological conditions (Terry, 2007, 2010). Rodent and rabbit...
The purposes of this study were to determine
relationships between burnout and selected demographic
and job-related variables and to identify burnout coping
strategies commonly used by teacher-coaches in public
secondary schools. A volunteer sample of 193 teacher-coaches
responded to a three-section questionnaire
composed of the Maslach Burnout Inventory, the Jaloweic...
The purpose of this study was to examine pressure at
five selected sites on the plantar surface of the foot and
adaptations in running kinematics among fourteen male
varsity collegiate distance runners on five different
surfaces--asphalt, cinders, concrete, grass, and tartan.
Pressure data were collected with an Electrodynogram system
(EDG)...
The purposes of this study were to (a) outline a three-stage
methodology combining functional/conceptual
equivalence, item equivalence, and equivalence in construct
operationalization to investigate the cross-cultural
validity of psychological test instruments, and (b) to
examine the cross-cultural equivalence of the Physical
Estimation and Attraction Scale (Sonstroem, 1978) for
English-speaking and...
The size, shape, and stability of a species’ dietary niche can both influence and reflect a variety of biological patterns, including species interactions, extinction risk, and ecosystem function. This is particularly apparent when dietary changes manifest at ecosystem and clade scales to profoundly affect macroecological and macroevolutionary trajectories. However, many...
Ecology is focused on understanding how organisms interact with each other and their environments, across ecological, spatial, and temporal scales. Thus, understanding how processes and patterns of ecological systems change across space and time is a principle goal for conservation biologist globally. While many approaches exist for investigating the changing...
Building upon Deci and Ryan's (1985, 1991) self-determination theory as well as
previous empirical work on motivation, the present study was designed to develop a
multifaceted 31-item Exercise Motivation Scale (EMS). A series of pilot studies were
first conducted in order to generate the 31 scale items. The EMS was...
Competitive exclusion is a key concept in ecology describing the exclusion of one species by another from access to a limited resource. Competitive interactions between chipmunk species in the Great Basin, documented by James Brown in 1970, are often used as a textbook example of competitive exclusion. Whether competitive interactions...
Anthropogenic climate change is threatening biodiversity as I currently understand it. There is now a large body of work highlighting species responses, globally, to this threat. Importantly, responses at the species level emerge from responses at lower levels of biological organization (individuals and populations) across a species’ geographic range. For...
The purposes of this study were to (a) provide insight into the use of item response theory (IRT) with psychomotor skills, (b) assess the psychometric properties of the Test of Gross Motor Development (TGMD) using IRT, and (c) provide a basis for future studies of the TGMD using IRT. The...
Rapid changes in global climate have put many species at risk, particularly niche
specialists. The Chisel-toothed kangaroo rat, Dipodomys microps, is thought to specialize on the desert shrub Atriplex confertifolia. Because of this close relationship, D. microps was presumed to have tracked the shrub as its distribution shifted south during...
Complementary delta-doped AlGaAs/GaAs Heterojunction Field Effect Transistor
(CHFET) devices and circuits were fabricated using MBE and a 2μ non-planar gate
recess process. Several schemes were used in an attempt to improve the performance of
the p-channel HFETs. These included delta-doping, carbon-doping and dipole-doping.
Circuits and individual n- and p- channel...
Rice, maize, sorghum, wheat, barley and the other
major crop grasses from the family Poaceae
(Gramineae) are mankind’s most important source
of calories and contribute tens of billions of dollars
annually to the world economy (FAO 1999, http://www.fao.org; USDA 1997, http://www.usda.gov).
Continued improvement of Poaceae crops is necessary
in order...
Two research studies at the U.S. Department of Energy's Hanford Site and Rocky Flats Environmental Technology Site (RFETS) explore the quantitative relationship between surface contamination, airborne radioactivity, worker intakes, and subsequent dose. In the first study, resuspension factors are developed and evaluated at the U.S. Department of Energy's (U.S. DOE)...
Now in its 10th year, the Gramene database (http://www.gramene.org) has grown from its primary focus on rice, the first fully-sequenced grass genome, to become a resource for major model and crop plants including Arabidopsis, Brachypodium, maize, sorghum, poplar and grape in addition to several species of rice. Gramene began with...
Two methods of radiation dose assessment were evaluated for the Cs-137 in soil ⇒ leafy vegetable ⇒ human consumption exposure pathway at three fictitious contaminated sites in California, Colorado, and Florida. An annual dose equation was developed and per USEPA risk assessment guidelines, traditional, single point annual dose estimates were...
This dissertation has two objectives. The first objective is to determine where best to situate the study of mentoring (i.e. the 'making of scientists') on the landscape of the history of science and science studies. This task is accomplished by establishing mentoring studies as a link between the robust body...
NOAA’s National Marine Fisheries Service (NMFS) was a key participant in the FAO technical and policy-level consultations of 1991-1999 that led to the FAO International Plan of Action for the Management of Fishing Capacity. The U.S. Plan of Action includes a commitment to prepare regular assessments of overcapacity in federally-managed...