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Accomplishing Education Vision 2030: An ICT-based Constructivist Approach to Enhance Content Knowledge and Learning Attitudes of Saudi Arabian High School Students
No full textThis study investigates the impact of an ICT-based constructivist teaching approach on content knowledge and learning attitudes among Saudi Arabian high school students. Traditional teaching methods often rely on teacher-centered instruction, which may limit student engagement, motivation, and critical thinking skills. The research aims to address challenges in traditional education methods, focusing on enhancing student engagement, motivation, and critical thinking skills. Using the 7E’s Model of Constructivism (Elicit, Engage, Explore, Explain, Elaborate, Evaluate, Extend), the experimental group received ICT-integrated lessons, while the control group continued with traditional teaching methods. The participants, high school students aged 15 to 18, were assessed using pre-test/post-test measures to evaluate their content knowledge and Technology Acceptance Model (TAM) questionnaires to gauge their learning attitudes. Findings revealed a significant improvement in both content knowledge and learning attitudes among students exposed to the constructivist approach, compared to those in the control group. These results highlight the effectiveness of the 7E’s Model in fostering active learning and promoting collaborative problem-solving. The study underscores the teacher's crucial role in guiding ICT-integrated constructivist practices and provides evidence-based recommendations for incorporating such methods into Saudi education. This aligns with the nation’s Vision 2030 objectives to enhance educational outcomes through innovative approaches
Disperser-Driven Occurrence and Characteristics of Multi-Stemmed Clusters in a Threatened High-Elevation Conifer
No full textThe seed-caching behavior of animals can determine the environmental conditions that trees experience throughout their lifetimes. Since animals typically place multiple seeds in each cache, the resulting trees often occur in multi-stemmed clusters. Documenting patterns in the distribution and characteristics of tree clusters is crucial for understanding the dynamics and regeneration of tree populations, particularly in the face of climate change and other environmental challenges. This study focuses on whitebark pine (Pinus albicaulis), a high-elevation conifer native to western North America that is completely reliant on seed-caching animals for its dispersal and regeneration. Whitebark pine has undergone rapid population decline over the past few decades and is listed as threatened in both Canada and the U.S. To assess occurrence patterns and characteristics of clustering in whitebark pine, I have used a network of 64 circular plots distributed across the Lake Tahoe Basin, which straddles the California and Nevada border. Results from intensive field sampling in the summer of 2024 indicate that whitebark pine was predominantly found in multi-stemmed clusters, ranging from two to 14 stems per cluster, rather than as solitary individuals. The number of whitebark pine clusters per plot declined with increasing solar radiation at high elevation. The number of stems per cluster increased with solar radiation in three of four sites. Additionally, cumulative whitebark pine basal area per plot increased significantly with elevation and with solar radiation in three of four sites. Stem size per cluster also increased with solar radiation in three of four sites. In contrast, cumulative non-whitebark pine basal area per plot declined significantly with increasing elevation. Although rarely emphasized, this research highlights the importance of stem clustering in whitebark pine, which has the potential to influence forest structure by promoting dense, multi-stemmed groupings and shaping competitive dynamics among tree species. In addition, these findings provide valuable insights for the conservation and management of whitebark pine by exploring how elevation and solar radiation shape its spatial distribution, and growth patterns. Understanding these dynamics is critical for developing targeted management strategies—such as prioritizing high-elevation, high-radiation sites—that enhance regeneration and support long-term population resilience in the face of climate change
Followers’ Moral Experience of Servant Leadership as an Antecedent of Unethical Pro-organizational Behaviors
No full textThis dissertation examines when and why while led by servant leaders, followers engage in behaviors that violate standards of proper conduct with an intention to promote the effective functioning of the organization or its members, or, unethical pro-organizational behaviors (UPOB). Challenging the view that unethical actions stem solely from self-interest, UPOB captures behaviors intended to benefit the organization yet violate broader ethical norms. While servant leadership is often lauded for its moral orientation and multiple stakeholders-centered focus, emerging evidence suggests it can unintentionally promote UPOB. This study addresses a critical gap by investigating how followers’ moral foundations influence their UPOB through modifying their perception of leaders’ behaviors and the desire to maintain moral self-regard.Drawing from moral foundations theory and leadership moralization theory, I propose that servant leadership influences UPOB through two distinct pathways: an individual-focused route and a group-focused route. Followers’ endorsement of specific moral foundations determines how they moralize leaders’ behaviors. These appraisals, in turn, motivate followers to engage in value-consistent behaviors via the motivation to establish a positive self-view, despite of those behaviors might be ethically questionable.
Four studies (a vignette experiment, two construct validation studies, and a multi-wave field survey) provide partial support for the proposed model. The findings contribute theoretically by expanding the moral mechanisms behind UPOB, enriching leadership moralization theory through a dual-pathway framework, and highlighting the unintended ethical consequences of servant leadership. Practically, the study underscores the importance of aligning leadership approaches with followers’ moral reasoning to mitigate ethical blind spots. Together, the dissertation offers a follower-centric framework for understanding the complex moral dynamics of servant leadership
A Guide to Library Research - Handout
No full textLibrary Search is the University Libraries’ search engine to find and access credible sources, including books, eBooks, scholarly articles, and news articles
Exploring Gender/Sexuality Disparities Within HPV Vaccination Messaging
No full textHuman Papillomavirus (HPV) is the most sexually transmitted infection in the United States. Historically vaccination protocols have primarily targeted women, which has led to an underrepresentation of how the virus could affect the male population. The FDA approved to administer the HPV vaccination to boys and young men in 2009 (Gutierrez, et al., 2012). Given the recent approval of the vaccine, many experts continue to observe gender biased messaging in HPV-related public health advertisements(Leader, et al., 2022). This study aims to address the specific elements of Merck's advertisement and how it affects the viewers understanding of the HPV vaccine
Letters in Dust
No full textAn immersive exhibition of drawings and installations using rice, paper, charcoal, and ink to explore memory, family, and identity shaped by personal history and state power. The work blends delicate materials with intimate, conceptual narratives.Identity is not something we inherit, but something we negotiate. My work explores how personal memory, familial bonds, and state-imposed structures shape identity. As a second child during China's One-Child Policy - a population-control measure that shaped the lives of generations' experienced how identity is influenced by both intimate relationships and institutional pressures. Though my birth was officially permitted, my place within the family was something I gradually came to understand - shaped by both affection and discipline. This tension informs Letters in Dust, an exhibition that examines how the self is formed and transformed at the intersection of personal experience and institutional power.
Through drawing, installation, and text-based practices, I examine how identity is not fixed but continually reconstructed through memory, loss, and care. I treat identity not as a static archive, but as a living and embodied process - inscribed in everyday gestures, emotional residues, and the fragile objects we keep. My materials - charcoal, pastel, rice, paper, dust, and ink - reflect the intimacy and impermanence of this process. Charcoal, derived from burnt organic matter, reflects the fragility of political legitimacy. Pastel, soft and easily smudged, suggests the instability of identities conferred by bureaucratic documents. These mediums echo both the domestic and the administrative, allowing the personal and the political to coexist in quiet tension.
In my practice, I explore how art can mediate the space between presence and disappearance, silence and remembrance. These tensions reveal how identity is often shaped not only by what is seen and spoken, but also by what is omitted, hidden, or quietly withheld. In my family history, unspoken narratives often left deeper marks than those retold. Each work becomes a site where memory and identity are not just recalled, but physically reassembled. I am drawn to what is easily overlooked: a grain of rice, a smudged fingerprint, an incomplete face. These gestures, though small, resist erasure. My work is not only an act of remembering, it is also a slow, deliberate way of becoming. Through intimate materials and repetitive labor, I trace the contours of identity as the process of persistence: a negotiation with absence, and a refusal to forget
Characterization of the Gold Hill low-sulfidation epithermal Au-Ag vein system, northern Nye County, Nevada; Implications for continued discoveries in established mining districts
No full textThe Gold Hill low-sulfidation epithermal (LSE) vein system is an exceptionally well-preserved and extensive (~400k oz Au (eq.), RMGC internal data, 2023.) Oligocene-age vein deposit located within the Round Mountain mining district of northern Nye County, Nevada, USA. Gold Hill is seven kilometers north of the world-class Round Mountain LSE deposit, which has produced >16.5 million ounces of gold to date. Although there is a close spatial and temporal relationship between Gold Hill and the giant Round Mountain deposit, their genetic relationship has not been well-studied. This study presents new data that characterizes the ore and gangue mineralogy of at least three stages of mineralization at Gold Hill as follows:• Stage I), Monomictic pyrite±marcasite breccias, with angular-subangular 2-20 cm, quartz-adularia altered clasts of tuff of Mt. Jefferson (Tmj) and varying intensities of silicification in the matrix, which includes up to 10% pyrite±marcasite (modal abundance).
• Stage II), white-tan-pink medium-coarse grained, massive-recrystallized quartz veins with pyrite±marcasite±electrum±chalcopyrite.
• Stage III), fine-medium grained crustiform-colloform quartz-chalcedony veins with abundant electrum- pyrargyrite- acanthite- Ag-tetrahedrite (freibergite)- pyrite± arsenopyrite.
Economic stage III Au-Ag mineralization occurs above the base of the boiling zone (~260 m below sinter), as evidenced by abundant macroscopic Au-Ag minerals, and well-developed vigorous boiling textures (e.g. crustiform-colloform banding). EPMA data collected on pyrite suggests that the ore forming fluids associated with stage III quartz veins were >200⁰C and indicate that stages I, II, and III pyrite have elevated precious and base metal concentrations. Pyrite, chalcopyrite and acanthite from the Gold Hill deposit have δ34S values that range from 4.4‰ to +16.6‰, including a pyrite-chalcopyrite mineral pair that yielded a temperature estimate of ~227°C.
250- ~220⁰C fluids appear concentrated along high-angle normal faults that host stages I-III of mineralization and altered tuff of Mt. Jefferson wall rock shows distinct alteration patterns. High temperature alteration assemblages (quartz-adularia-pyrite-illite) occur proximally to both breccia and vein hosted orebodies and quartz-adularia-pyrite-illite alteration pervasively replaces primary feldspars and the groundmass of the rhyolitic Tmj wall rock. Distal from breccia and vein orebodies, alteration consists of a K-feldspar±smectite±calcite±chlorite±quartz±pyrite assemblage that occupies both deeper depths of the deposit and appears distal from inferred upwelling zones (i.e. stage II + III quartz veins). This study proposes that the Gold Hill system may have formed during upward fluctuation of high-temperature ore-forming fluids and indicates a close spatial association between orebodies and intrusive domes and dikes, which suggests a local heat source at depth.
Overall, Gold Hill appears to be a discrete LSE vein system, outboard of the giant Round Mountain deposit, and the genetic characteristics of the Gold Hill LSE deposit differ from that of Round Mountain based on 1) high-temperature Tmj wall rock alteration, which indicates high fluid flux, and appears spatially constrained to breccia and vein orebodies, 2), upward fluctuation of the hydrothermal system with input of both meteoric waters and more deeply sourced ore-forming fluid components, and 3) discrete periods of mineralization that are recorded in stages I-III mineralization and that show clear variation in both metal budget and trapping mechanisms. These genetic characteristics indicate potential for the discovery of comparable vein systems in tectonic settings like that of the giant Round Mountain deposit, but also indicate the importance of understanding LSE hydrothermal alteration profiles in homogenous host rocks (i.e. Tmj), and equally important, this research demonstrates that the presence of one style of epithermal system (e.g. Round Mountain) does not preclude the presence of other styles of epithermal mineralization within the same region, district, or brownfield environment (e.g. Gold Hill), suggesting that exploration in established mining districts needs to consider multiple styles of both alteration and mineralization
A Bi-variate Gamma Generalized Laplace Distribution
No full textThis thesis introduces the Bivariate Gamma Generalized Laplace (BGGL) distribution, a novel member of the Bivariate Conditionally Normal (BCN) family. The BGGL combines a gamma-distributed variable with a conditionally normal variable, offering a flexible model for asymmetric, heavy-tailed bivariate data. We derive the distribution's properties, including its probability density function, marginal and conditional distributions, and moments.A major contribution is the development of maximum likelihood estimators (MLEs) for BGGL parameters, with explicit forms for most estimators and numerical methods for others. Simulation studies validate these estimators across various scenarios. The thesis also explores generalizations of the BCN family using different mixing distributions, demonstrating the model's adaptability.
To illustrate practical applications, we apply the BGGL to financial market data, modeling the joint behavior of log returns and volatility for major stock indices. These empirical examples showcase the distribution's ability to capture complex relationships in financial data.
This research expands the toolkit of bivariate distributions, with potential applications in finance, risk management, and other fields requiring flexible modeling of asymmetric, correlated data. The thesis provides a foundation for future exploration of BGGL properties and applications in various domains