The Importance of Teacher Self-efficacy in the Implementation of a Middle and High School Science Writing Initiative

This study focuses on the experiences of two science teachers who worked to implement a writing-focused, science literacy project in their classrooms. More specifically, I uncover the ways these teachers’ experiences differed and how these differences influenced their implementation. Findings confirm the importance of content teachers’ sense of self-efficacy as writers and writing teachers. In order to foster writing initiatives at the middle and secondary levels, we must honor and nurture content teachers’ sense of self-efficacy and give them multiple opportunities to develop mastery experiences

Quick-release hook-and-loop fastener

Joints between two rigid materials lined with velcro fabric can now be broken with ease using any one of several methods. Three such methods are applicable to either hook or loop fabric

Estimating the Economic Impact of Telemedicine in a Rural Community

One commonly discussed benefit of broadband access in rural America is the potential for telemedicine visits that allow rural residents to take advantage of urbanized medical services. While the primary benefit of telemedicine is often viewed as improved health care access, the availability of these services also offers significant economic contributions to the local community. Site visits to 24 rural hospitals of varying size over a four-state area in the Midwest provide information to develop a methodology for estimating telemedicine’s economic impact. Using this technique, telemedicine services contribute between $20,000 and$1.3M annually to these local economies, with an average of $522,000.telemedicine, economic impact, teleradiology, telepsychiatry, Community/Rural/Urban Development, Health Economics and Policy,

Evidence of coevolution in multi-objective evolutionary algorithms

This paper demonstrates that simple yet important characteristics of coevolution can occur in evolutionary algorithms when only a few conditions are met. We find that interaction-based fitness measurements such as fitness (linear) ranking allow for a form of coevolutionary dynamics that is observed when 1) changes are made in what solutions are able to interact during the ranking process and 2) evolution takes place in a multi-objective environment. This research contributes to the study of simulated evolution in a at least two ways. First, it establishes a broader relationship between coevolution and multi-objective optimization than has been previously considered in the literature. Second, it demonstrates that the preconditions for coevolutionary behavior are weaker than previously thought. In particular, our model indicates that direct cooperation or competition between species is not required for coevolution to take place. Moreover, our experiments provide evidence that environmental perturbations can drive coevolutionary processes; a conclusion that mirrors arguments put forth in dual phase evolution theory. In the discussion, we briefly consider how our results may shed light onto this and other recent theories of evolution

RURAL BROADBAND AVAILABILITY AND ADOPTION IN OKLAHOMA

Broadband Adoption, Rural Broadband Availability, Broadband Infrastructure, Broadband Digital Divide, Community/Rural/Urban Development, Research and Development/Tech Change/Emerging Technologies, R22, D12,

Degeneracy: a design principle for achieving robustness and evolvability

Robustness, the insensitivity of some of a biological system's functionalities to a set of distinct conditions, is intimately linked to fitness. Recent studies suggest that it may also play a vital role in enabling the evolution of species. Increasing robustness, so is proposed, can lead to the emergence of evolvability if evolution proceeds over a neutral network that extends far throughout the fitness landscape. Here, we show that the design principles used to achieve robustness dramatically influence whether robustness leads to evolvability. In simulation experiments, we find that purely redundant systems have remarkably low evolvability while degenerate, i.e. partially redundant, systems tend to be orders of magnitude more evolvable. Surprisingly, the magnitude of observed variation in evolvability can neither be explained by differences in the size nor the topology of the neutral networks. This suggests that degeneracy, a ubiquitous characteristic in biological systems, may be an important enabler of natural evolution. More generally, our study provides valuable new clues about the origin of innovations in complex adaptive systems.Comment: Accepted in the Journal of Theoretical Biology (Nov 2009

Small Broadband Providers: Where and Why?

Using new data set of Federal Communication Commission, we model where small broadband providers choose to locate. When using all areas data, we find that even in term of small broadband providers, digital divide between rural and urban areas still exist. However, when we restrict data on areas previously depicted as no provider, rural areas seem to be an attractive target for small broadband providers. In addition, areas with high number of household but low number of business seem to be interested by small broadband provider especially rural areas. The results also suggest that USDA policies to increase broadband providers in rural area are ineffective.Marketing,

How Specialized is “too” Specialized? Outmigration and Industry Diversification in Nonmetropolitan Counties across America

Outmigration and industrial composition have separately been the focal points of a significant amount of research related to nonmetropolitan counties; however, few (if any) studies have explicitly looked at the relationship between the two topics. The primary objective of this research is to identify what industry specialization level is “too” specialized with regards to outmigration – that is, to determine the level where specialization begins to have a damaging effect on population change. County-level data from a variety of sources is used to explore the impact of both earnings-based and employment-based definitions of specialization on net migration in nonmetropolitan counties from 2000 – 2009. Two distinct techniques (ordinary least squares and average treatment effects) are then used to assess both the impact and causality of being “too specialized.” The results suggest that a variety of specialization thresholds exist across various industries, including some surprising positive influences of industry composition on migration rates.Outmigration, Nonmetropolitan, Industrial Specialization, Industrial Diversification, Community/Rural/Urban Development,

Farming and the Internet: Reasons for Non-Use

Rural broadband infrastructure and service has received a significant amount of funding through the American Recovery and Reinvestment Act of 2009. These funds should increase broadband availability, but will broadband be used in rural areas and in particular by farmers? This paper uses Agricultural Resource Management Survey data to investigate why the majority of U.S. farmers choose not to use the Internet in their farm business. Although frequently cited by policymakers, concerns about inadequate Internet service or security actually account for a small percentage of responses. This research identifies targeted educational programs that focus on alleviating perceived barriers to Internet use.ARMS, farming, Internet, multinomial logit, non-use, Agribusiness, Community/Rural/Urban Development, Farm Management,