University of Northern Colorado

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    11678 research outputs found

    Communicating with the Public: Science for the Average Bear

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    Have you ever encountered someone floundering on air while trying to explain a complex scientific concept? This presentation will help you avoid that type of “cringe” moment. Here, we will discuss how to appeal to the public using both facts and emotion to ensure better communication and understanding. Using examples from climate science and public health, we will ensure you’re more prepared to talk to everyone around you about the importance of your work. Register at https://unco.zoom.us/meeting/register/Ti6ynJnlRMuEf3tseZgZz

    Nature, History, and Environmental History at Rocky Mountain National Park

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    An article that looks at how ecologists and environmental historians look at environmental change. Rocky Mountain National Park; Rocky Mountain Enviornmental History; Barron, Jill

    Rocky Mountain Historic Trails

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    A flyer covering the trails at Rocky Mountain National Park that qualify for the National Register of Historic Places. Fern Lake; Mills, Enos ;Longs Peak Trail; Mission 66; Estes Park; Grand Lake; Hot Sulphur Springs; Standish, Sierr

    A History of the CCC in Rocky Mountain National Park

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    A Review of New Deal Programs from a progressive viewpoint, such as the Civilian Conservation Corps, Public Works Administration and the Civil Works Administration all contributed to the growth of Rocky Mountain National Park

    Climate Change in Rocky Mountain National Park: Preservation in the Face of Uncertainty

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    A short report on a Climatology Conference with attention on birds, mammals, hydrology, wetlands, lakes, streams, and fire. Rocky Mountain National Park; Tatra Mountain Range; Green Valley Lake Colorado Front Range

    Assessing K-Nearest Neighbors Imputation Methods for Missing Data: A Simulation Study

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    Missing data poses significant challenges in data-driven decision-making, often leading to biased estimates and reduced statistical power if improperly handled. Although K-nearest neighbors (KNN) imputation is widely adopted for its simplicity and effectiveness, the impact of distance metric selection on its performance under varying data conditions such as sample size, dimensionality, and proportion of missingness remains underexplored. The purpose of this study is to evaluate the performance of different distance metrics in the K-Nearest Neighbors algorithm for imputing missing values. This study evaluates the performance of five distance metrics (Euclidean, Mahalanobis, Manhattan, Minkowski, Chebyshev) in KNN imputation under these conditions. Specifically, the study addresses three research questions: (1) How does varying distance metrics affect KNN imputation accuracy (measured by mean squared error (MSE), mean absolute error (MAE), and root mean squared error (RMSE)) as the proportion of missing data increases? (2) How does varying distance metrics affect accuracy as data dimensionality increases? (3) How does varying distance metrics affect accuracy as sample size increases? A simulation study was conducted using a fixed neighborhood of k=5 to isolate the metric’s effect, generating datasets with controlled sample sizes (100, 500, 1000), dimensionalities (50, 200, 500), and proportions of missingness (2%, 15%, 30%) under a missing-at-random mechanism. Performance of each distance metrics in KNN imputation was evaluated using MSE, RMSE and iii MAE. Additionally, the Iris dataset was used for empirical validation. Findings indicate that Mahalanobis distance excels in low-missingness scenarios (\u3c 15%) and high-dimensional data, though its performance shows a U-shaped curve with dimensionality and comes at a higher computational cost. Euclidean distance is robust for high missingness (\u3e 20%) and low-dimensional data. Manhattan distance, however, proved consistently less effective. These findings emphasize that metric choice must be data-driven and deliver practical, actionable guidance for optimizing KNN imputation in practice

    The Big Five, Impulsivity, and Problem Gambling in Online Sports Betting

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    The rapid expansion of online sports betting in the United States following the repeal of PASPA in 2018 has prompted increased concern regarding problem gambling behaviors specific to this modality. Despite growing accessibility and engagement, relatively little is known about the individual differences that may predict increased risk severity for problem gambling among online sports bettors. This purpose of this study was to examine the relationships among personality traits according to the Big Five, impulsivity, and problem gambling risk severity within a U.S.-based sample of adult online sports bettors. The following research questions were explored in this study: Q1 Do the Big Five personality traits predict problem gambling risk severity for online sports bettors, as defined by the Problem Gambling Severity Index (PGSI) and the South Oaks Gambling Screen (SOGS)? Q2 Do the five components of impulsivity (i.e., negative urgency, positive urgency, lack of premeditation, lack of perseverance, and sensation-seeking) predict problem gambling risk severity for online sports bettors? Q3 Is there a significant difference between problem gambling risk severity scores on the PGSI and on the SOGS for online sports bettors? Q4 Do the demographics and betting behaviors of online sports bettors correlate with the Big Five, problem gambling risk severity, and the five components of impulsivity? A total of 178 participants completed self-report questionnaires related to the Big Five personality traits, impulsivity, and problem gambling risk. Multiple regression models, among other statistical analyses, were used to investigate potential personality and impulsivity-related predictors for increased problem gambling risk. Findings indicated that higher levels of positive urgency were significantly associated with increased problem gambling severity. Among the Big Five traits, lower conscientiousness and higher extraversion were also uniquely predictive of heightened problem gambling risk. Implications of these findings for theory, clinical work, practical applications, counseling psychology as a field, and future research were discussed

    Pre-service Teacher Perceptions of Preparedness: Collaboration with Diverse Families of Children with Disabilities

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    Collaboration between educators and families is a critical issue in the field of education. This topic becomes even more salient when working with culturally, linguistically, or economically diverse families of children with disabilities. Both research and practice have shown that many educators enter the profession without adequate preparation for this aspect of their role. This study examined pre-service teachers\u27 attitudes, comfort level and perceived preparedness to collaborate with diverse families of children with disabilities while completing their university teacher preparation programs. A total of 159 pre-service teachers representing 40 institutions completed an online survey addressing this topic. Results indicated a) pre-service teachers felt largely unprepared to collaborate with diverse families, b) coursework and practicum experiences were positively associated with attitude, comfort level and preparedness in collaborating with diverse families, and c) hands-on strategies, such as role play, Family as Faculty approaches and practical learning within the world of diverse settings were recommended. Implications for practice and future research will also be discussed

    Theoretical Exploration: Feederism and Precarious Manhood

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    The internet provides a peek into the lives of niche communities that one might not otherwise encounter in daily life. Stumbling into a unique subculture can intrigue, befuddle, or even disturb the outside viewer. The traditional physical barriers between sexual fetishes and the outside world are diminished with a few clicks of the keyboard. One sexual fetish gaining internet traction, even outside of the explicitly adult online spaces, is that of feederism. Feederism’s growing infamy comes from its odd and extreme departure from what is considered “normal” – an overt sexualization of force feeding a partner with intent of weight gain to the point of morbid obesity (Charles & Palkowski, 2015). This theoretical paper seeks to understand the psychosexual processes at work behind dominant sexual roles for heterosexual cisgender men interested in extreme feederism. Theories of precarious manhood and dehumanization guide a hypothesized understanding of what may be behind this scantily researched fetish

    Rocky Mountain National Park: How Might Future Warming Alter Visitation

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    A flyer covering how Global warming may effect visitation patterns to Rocky Mountain National Park. Rocky Mountain National Park; Climate Change; Global Warming; Fisichelli, Nicholas; Ziesler, Pamela

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