37200 research outputs found
Sort by
Cascading Crises: Climate Change and K-12 Education
Get PDFIn this special issue of the Northwest Journal of Teacher Education, Richard Sawyer and I (the co-editors) examine a few of these consequences of climate change on the field of education. Specifically, we focus on teacher educators’ discussion of their work with their preservice students to understand and make a positive impact on climate justice education. All of the articles in this special issue take a realistic yet guardedly hopeful stance to the possibilities for climate justice
Toward The Development Of An Ultra-Fast, Bright Photoelectron Emission Source Using Tip Enhancement
Get PDFWith the advancement of technology, people are pursuing even higher-resolution analysis results from metrology tools. When results are provided with temporal information, one can add a new dimension to the results. This research involves the development of a new temporal electron source by utilizing tip enhancement, which necessitates the creation of a novel type of emitter that emits electrons on a femtosecond (fs) time scale. Due to the nature of the electron’s mass, under the influence of an electric field they move quickly. To achieve our goal is the design of a resonant nano antenna (or known as a nantenna) to produce field enhanced photoelectron emission. The benefits from this design include less damage (much less than 1 nJ) to the tip from the laser and a much smaller region of emission, if successful. This work will require knowledge of ultra-high vacuum systems, electron microscope usage and modification, ultra-fast lasers (alignment and mode-locking), Focused Ion Beam (FIB) milling at a high-resolution level, FDTD modeling of probe tips on the nanoscale, as well as many other techniques
Left Behind: Experiences of Community Mental Health Center Clients with Serious Mental Illness During the COVID-19 Pandemic.
No full textWhile some international qualitative research has interviewed people with serious mental illnesses (SMI) about their experiences in the initial months of the COVID-19 pandemic, few US studies have explored their experiences and perspectives as the pandemic has continued. Drawing from disability studies perspectives, this qualitative study conducted in 2022 explored the experiences of people with SMI seeking services at community mental health centers during the COVID-19 pandemic. Fifteen clients who identified as living with an SMI and were clients during March 2020 were interviewed. Using narrative analysis, we identified an overarching tenor of client experiences: feeling left behind by institutions and society. This feeling of being left behind was conceptualized as three themes. As the literature around the COVID-19 pandemic grows and we attempt to integrate it into community mental health policy and practice, it is essential to include the experiences and perspectives of clients with lived experience of SMI
Exploring Affective Experiences of Queer Individuals Navigating Relationships with Evangelical Parents
Get PDFAn abundance of scholarship explores and discusses the process of queer identity development, including the experience of disclosing one’s queer identity, often referred to as coming out. Coming out to one’s parent(s) can be a challenging and complex experience for queer individuals, particularly for children from religious families. In this study, I explored the nuanced relationships between queer individuals and their Evangelical parents. I conducted qualitative interviews with nine participants. Using thematic analysis and Ahmed’s theory of affect and happy objects, I constructed four themes: (a) learning the affect queer carries, (b) feeling the affects of being queer, (c) how parental appraisals affect parent-child relationships, and (d) being the killjoy. Results suggest the belief alone that “queer is bad’’ is harmful, regardless of outward acceptance or rejection behaviors from parents. This work compels the field to look beyond and before reactions from parents toward their queer children and to also consider how conceptualizations of queer as bad or good affect queer individuals. While much is known about the challenges faced by queer individuals, this work reveals the importance of examining the systems and structures causing these challenges rather than perpetuating the idea that being queer is inherently painful
Immigrant Identity Formation, A Transnational Approach: Italian Americans in New York City, 1880-1930
Get PDFOf the Italian immigrants arriving in America during the Great Migration (1880-1924), few understood themselves as “Italians.” On paper, Italian unification took place in 1861, but the creation of Italy as a unit of politics was not the creation of Italians as a unit of nation. Even decades later, immigrants landing in New York City understood themselves in regional terms—as Calabrians, Sicilians, and Neapolitans. “Italian national identity” remained an idea confined to the imaginations of wealthy and educated Italian nationalists. In the years that followed the Great Migration, immigrants reshaped Italian-American identity as they grappled with American ideas of race and national belonging. Here, a transnational analytical framework is applied to the study of Italian-American identity formation to understand how the social and economic connections migrants forged between their hometown villages and overseas enclaves transformed experiences of identity. From the strictly regional affiliations immigrants arrived with, Italian ethnic identity was redefined by transnational experiences of nation into something truly novel, an immigrant identity that produced vivid experiences of feeling Italian-American.
Part of the panel: Exploring Global Cultural Identities Moderator: Professor Bright Alozi
Spatiotemporal Analysis of Soil Quality Degradation and Emissions in the State of Iowa (USA)
Get PDFThe concept of soil quality (SQ) is defined as the soil\u27s capacity to function, which is commonly assessed at the field scale. Soil quality is composed of inherent (soil suitability) and dynamic (soil health, SH) SQ, which can also be analyzed using geospatial tools as a SQ continuum (SQC). This study proposes an innovative spatiotemporal analysis of SQ degradation and emissions from land developments using the state of Iowa (IA) in the United States of America (USA) as a case study. The SQ degradation was linked to anthropogenic soil (SD) and land degradation (LD) in the state. More than 88% of land in IA experienced anthropogenic LD primarily due to agriculture (93%). All six soil orders were subject to various degrees of anthropogenic LD: Entisols (75%), Inceptisols (94%), Histosols (59%), Alfisols (79%), Mollisols (93%), and Vertisols (98%). Soil and LD have primarily increased between 2001 and 2016. In addition to agricultural LD, there was also SD/LD caused by an increase in developments often through urbanization. All land developments in IA can be linked to damages to SQ, with 8385.9 km2 of developed area, causing midpoint total soil carbon (TSC) losses of 1.7 × 1011 kg of C and an associated midpoint of social cost of carbon dioxide emissions (SC-CO2) of 1.3B in SC-CO2. New developments are often located near urban areas, for example, near the capital city of Des Moines, and other cities (Sioux City, Dubuque). Results of this study reveal several different kinds of SQ damage from developments: loss of potential for future C sequestration in soils, soil C loss, and “realized” soil C social costs (SC-CO2). The state of IA has very limited potential land (2.0% of the total state area) for nature-based solutions (NBS) to compensate for SD and LD. The results of this study can be used to support pending soil health-related legislation in IA and monitoring towards achieving the Sustainable Development Goals (SDGs) developed by the United Nations (UN) by providing a landscape-level perspective on LD to focus field-level initiatives to reduce soil loss and improve SQ. Future technological innovations will provide higher spatial and temporal remote sensing data that can be fused with field-level direct sensing to track SH and SQ changes
Imaging of Structural Timber Based on in Situ Radar and Ultrasonic Wave Measurements: A Review of the State-Of-The-Art
Get PDFWith the rapidly growing interest in using structural timber, a need exists to inspect and assess these structures using non-destructive testing (NDT). This review article summarizes NDT methods for wood inspection. After an overview of the most important NDT methods currently used, a detailed review of Ground Penetrating Radar (GPR) and Ultrasonic Testing (UST) is presented. These two techniques can be applied in situ and produce useful visual representations for quantitative assessments and damage detection. With its commercial availability and portability, GPR can help rapidly identify critical features such as moisture, voids, and metal connectors in wood structures. UST, which effectively detects deep cracks, delaminations, and variations in ultrasonic wave velocity related to moisture content, complements GPR’s capabilities. The non-destructive nature of both techniques preserves the structural integrity of timber, enabling thorough assessments without compromising integrity and durability. Techniques such as the Synthetic Aperture Focusing Technique (SAFT) and Total Focusing Method (TFM) allow for reconstructing images that an inspector can readily interpret for quantitative assessment. The development of new sensors, instruments, and analysis techniques has continued to improve the application of GPR and UST on wood. However, due to the hon-homogeneous anisotropic properties of this complex material, challenges remain to quantify defects and characterize inclusions reliably and accurately. By integrating advanced imaging algorithms that consider the material’s complex properties, combining measurements with simulations, and employing machine learning techniques, the implementation and application of GPR and UST imaging and damage detection for wood structures can be further advanced
Optimizing Medical Image Analysis: Leveraging Efficient Hardware and AI Algorithms
No full textThe surging use of medical AI algorithms and their hardware integration is transforming healthcare by improving non-invasive medical analysis with early disease detection, advanced segmentation, and classification. However, realizing comprehensive and accurate medical analysis through efficient AI-based tools necessitates a fundamental requirement — extensive multimodal data for training deep learning models. Handling this extensive data volume demands significant hardware resources, including multi-node training, to address the substantial computational requirements essential for accelerating model development. Hence, the challenge is two-fold: Achieving high accuracy while upholding a computationally inexpensive solution. To navigate this challenge, we propose a novel and efficient solution: a lightweight predictive tool for medical image classification developed by combining a Radiomics-based Random Forest model with MobileViT transformer, tailored for mobile applications. This approach ensures enhanced accuracy and reproducibility along with hardware flexibility. Our proposed method is exemplified by its superior performance in the BraTS2021 challenge, surpassing current state-of-the-art models with the best AUROC of 0.64 and 0.63 on both public and private test datasets respectively. The success of our approach highlights the potential of hybrid models in diverse medical applications beyond image classification
Political Movement Through Cultural Identity: Lessons from the Présence Africaine
Get PDFThe Présence Africaine journal was unlike any of the time. Founded in Paris in 1947, its mission centered the expression of African cultures that had been suppressed under French colonial rule. The writers did not share a race or nationality but were united by a shared purpose of creating literary discourse around the colonization of Africa and the struggles of the pan-African movement. The founder, Alioune Diop, was a Senegalese professor who promoted a unique approach to political change. He was aware of the stark cultural losses that the French colonization of Africa was causing and saw the colonial suppression of African culture and its exclusion from the idea of “modernity” as a means of control by France. This paper explores the journal’s unique approach to African decolonization through cultural expression.
Keywords: Colonialism, culture, Africa, journalism, art, Alioune Diop, Frantz Fanon, France, Présence Africaine, decolonization, dialogue
Part of the panel: Exploring Global Cultural IdentitiesModerator: Professor Bright Alozi
Mixing Customer Ingratiation into Evaluation: How Service Providers Judge and Evaluate Rideshare Experiences
Get PDFWhereas consumer satisfaction is critical for the success of services, we research how providers evaluate customers in the sharing economy represented by the rideshare marketplace. We examine anticipated customer evaluation (ACE) as the underlying link and the provider\u27s sense of power as a moderator for the relationship between customer ingratiation and provider evaluations. We first conducted a field pilot study and analyzed the content of rideshare trips described by drivers. Then, we tested the conceptual framework in four experiments that manipulated different rideshare customer behaviors (self-presentation, other-enhancement, and customer conformity). Our study contributes to the consumer research literature by examining provider evaluation and discovering the peer-to-peer (P2P) dynamic evaluation mechanisms that adopt a two-way rating system