“It is of basic importance to understand the hereditary mechanisms that function in the perpetuation of the existing natural races and species and in the evolution of new ones, but investigations in this field are difficult and have largely been neglected. The commonly used laboratory organisms are inadequate to resolve differences that characterize natural biological entities found in the wild”

In multiple indicator models, there are several indicators for one trait–method unit. In the less restrictive model, there is one factor for all indicators belonging to the same trait–method unit. The correlations between these factors constitute a latent MTMM matrix. The correlation coefficients of this latent MTMM matrix are not distorted by measurement error and allow a more appropriate appl...

this study sought to develop a decision support system (dss) for assisting range managers to detect range condition and make informed decisions about feridan county rangelands. all plant species frequencies were measured in 31 range sites with various grazing histories using step point method. four hundred points along four perpendiculars 30 meters transects were measured in each site and grazi...

It has been known for some time that the SL(2,R) WZWN model reduces to Liouville theory. Here we give a direct and physical derivation of this result based on the classical string equations of motion and the proper string size. This allows us to extract precisely the physical effects of the metric and antisymmetric tensor, respectively, on the exact string dynamics in the SL(2,R) background. Th...

Social comparison (i.e., body, eating, exercise) and body surveillance were tested as mediators of the thin-ideal internalization-body dissatisfaction relationship in the context of an elaborated sociocultural model of disordered eating. Participants were 219 college women who completed two questionnaire sessions 3 months apart. The cross-sectional elaborated sociocultural model (i.e., includin...

J. J. Gibson’s concept of affordance, one of the central pillars of ecological psychology, is a truly remarkable idea that provides a concise theory of animal perception predicated on environmental interaction. It is thus not surprising that this idea has also found its way into robotics research as one of the underlying theories for action perception. The success of the theory in this regard h...

When designing and implementing an Agent-Based Simulation model a major challenge is to formulate the interactions between agents and between agents and their environment. In this contribution we present an approach for capturing agent-environment interactions based on the “affordance” concept. Originated in ecological psychology, affordances represent relations between environmental objects an...

Ecological model systems provide a conduit to understand the ecological impact of information gained from laboratory model species. Here, I review a 2011 meeting which focused on the systematic, ecological, evolutionary and developmental biology of the ecological model genus Boechera.

Ecological indicators, historical land use, and invasive species detection in the lower Iowa River floodplain." MA has been approved by the Examining Committee for the thesis requirement for the Master of Arts degree in Geography at the May 2014 graduation.