Digital Commons Network^™

Some Initial Results Of Field Trials Conducted In Establishing A Pasture-Seed Industry In Cojedes State, Venezuela, E.J A. Khan, W H. Mark

IGC Proceedings (1977-2023)

In starting a pasture-seed industry on a farm located at lat 9°50' N that gets about 1,600 mm of rain yearly followed by a severe dry season from mid-December to April, four widely separated sites were selected to plant three grasses for commercial seed production in 1978. The objectives were to assess the fertility status of the soils, then to determine the fertilizer re­quirements of the grasses at each site and to establish an introduction garden with 70 cultivars of grasses and legumes to study their suitability for expanding seed production. Based on the results of soil analyses, a modified …

Insect Pests Of Tropical Forage Plants In South America, Mario Calderon

IGC Proceedings (1977-2023)

The objectives of this continuing research are to make a general survey of the insect populations occurring on tropical forage plants in South America and to identify the most important pests. To realize this investigation, pure stand plots 5 X 5 m were sampled every 14 days during 2 years using a D-Vac. Vacuum Sampler.

The following information was obtained:

• Most important families and/or genera of insects in tropical forage legumes and grasses. • Insect group frequency for each season. • Insect group frequency for each plant ecotype under study. • Preliminary data on insect preference. • Preliminary data …

Sown Grassland As An Alternative To Shifting Cultivation In Lowland Humid Tropics, H R. Chheda, O Babalola, M.A M. Saleem, M E. Aken'ova

IGC Proceedings (1977-2023)

Agriculture based on existing forms of shifting cultivation will not be able to support and feed adequately the rapidly increasing human population of the lowland humid tropics of Africa. The forest and natural fallows have shortened and even disap• peared in some areas because of rising food demands. Crop yields are low and continue to decline. What, then, are the alter­natives? Using Cynodon as an example, an attempt is made to show that mixed farming offers an alternative whereby the nutrient status and physical properties of the soil can be maintained, erosion can be checked, weeds can be kept under …

Animal Production From Brazilian Tropical Pastures, G L. Rocha, V.B G. Alcantara, P B. Alcantara

IGC Proceedings (1977-2023)

This review deals with the potential for beef production from nitrogen- and legume-based pastures in tropical Brazil. Possibilities for impr􀀞ving the beef industry supported by grass-legume pastures are very promising. According to the literature examined, legume-based pastures produced an annual average of 329 kg gain/ha, and nitrogen (N) fertilization resulted in 4.56 kg gain/ha. Phosphorus (P) was the main fertilizer utilized in addition to N, followed by potassium (K), lime, and micronutrients. An­nual rainfall averaged 1430 mm. Grasses used were of the genera Melinis, Hyparrhenia, Panicum, Cenchrus, Digitaria, Cynodon, Brachiaria, and Pennisetum, and the legumes were of the genera Macroptilium, …

Verano Stylo In Semiarid Northeastern Thailand, A Topark-Ngarm

IGC Proceedings (1977-2023)

Srylosanthes hamata cv. Verano was first introduced to Thailand in 197 5. In the northeastern part of the country where the climate is marginal and the soils are low in fertility, Verano appears to be one of the most suitable forage legumes used in pasture-improvement programs. Verano can be grown satisfactorily on most soils in the northeast. Oversowing the seed at 3.1 kg/ha on unploughed areas resulted in a density of 5-30 plants/m2, while in cultivated land the same amount of seed gave 20-45 plant/m2 • In a 3-year ex­periment under different seeding rates and cutting intervals Verano outyielded three …

Hemarthria Altissima: A Pasture Grass For The Tropics, K H. Quesenberry, W R. Ocumpaugh, O C. Ruelke

IGC Proceedings (1977-2023)

Limpograss (Hemarthria altissima [Poir] Stapf. et C.E. Hubb), introduced into the U.S. in 1964, has been evaluated for use as a pasture grass. Under Florida conditions it has shown yield potential equal to or greater than other tropical pasture grasses. The cultivar Bigalta has higher in-vitro organic-matter digestion (IVOMD) than other tropical grasses at comparable growth stages. Early evaluations of limpograss involved only three clones, but additional genotypes were collected and introduced during the late 1960s and early 1970s, and an evaluation scheme for this germ plasm was undertaken. Our objectives were to evaluate rapidly the available germ plasm of …

Efficient Fault Detection In Nonlinear Industrial Processes: A Reduced Kernel Pca-Based Spectral Clustering Approach, Khadija Attouri, Majdi Mansouri, Abdelmalek Kouadri

The Journal of Engineering Research

Kernel Principal Component Analysis (KPCA) is a powerful tool for nonlinear process monitoring, yet its quadratic computational complexity (O( N² )) and high memory demands limit its applicability to large-scale industrial systems. This paper proposes a novel Reduced Kernel Principal Component Analysis based on Spectral Clustering (RKPCA_SpC) paradigm to efficiently address these limitations. For comprehensive comparison and to demonstrate the general efficacy of data reduction, an RKPCA_Kmeans variant is also developed and evaluated. The proposed and comparative methods are rigorously assessed through extensive case studies on two complex industrial processes: the Tennessee Eastman Process (TEP) …

Perceptions Of Teachers In Inuit Nunangat On The Benefits Of Life-Promotional Activities On Inuit Youth To Reduce Suicide In Nunavut, Aramide Owoaje

Walden Dissertations and Doctoral Studies

No abstract provided.

From Acrimony To Forgiveness: How Adolescents Make Sense Of Childhood Maltreatment, Katherine Irwin

Qualitative Criminology (QC)

"This paper examines 16 adolescents’ narratives about the abuse they experienced during childhood. To date, most research examining child abuse (CA) survivorship and recovery has been conducted with adults who look back on their early experiences. Consequently, this study fills gaps in our knowledge by offering a youth-centered view of survivors’ efforts to cope with CA. The data come from a 12-year qualitative study of a group counseling program for high school students in Hawaiʻi. The findings revealed that a minority (n = 2) of the teens had negative views of their lives and futures, while the majority (n = …

A Content Analysis Of The Sutherland Address, 2001-22: A Qualitative Exploration, Phillip Shon

Qualitative Criminology (QC)

"Previous indicators of scholarly influence have been primarily quantitative, measuring a scholar’s influence through citation counts. This body of literature has overlooked the reflections of distinguished scholars, such as the recipients of the Sutherland Award, in the discipline as a form of scholarly influence. The current paper examines the Sutherland Address from 2001 to 2022. The key findings indicate that the majority of Sutherland Addresses reproduced existing sociological canons, while a minority of Sutherland Award winners explicitly rejected Sutherland’s sociological assumptions and their influence on criminology. Such findings suggest that Sutherland exerts a hidden influence on the recipients of the …

Towards The Poetics Of Artificial Intelligence: Disrupting Anthropocentrism In I Am Code: An Artificial Intelligence Speaks, Milad Ghazi Saeed

Alustath Journal for Human and Social Sciences

Artificial intelligence (AI) has emerged as a transformative force capable of restructuring anthropocentric assumptions of creativity, identity, subjectivity, and other human attributes. The current study aims to investigate how the poetics of AI firmly defies anthropocentrism through portraying Code-DaVincie-002, a generative model developed by OpenAI, as a self-aware subject. It also aims to inspect how AI, through the lens of Posthumanism, penetrates the barriers between organic and non-organic beings by performing cognitive processes that once were considered the exclusive domain of humans. Methodologically, the study adopts a qualitative textual analysis grounded in a posthumanist reading of selected poems from I …

Queer, Hybrid Participatory Design: Relational Practices And Norms For Coalition Building With Rural, Lgbtq+ Communities, Luettamae Lawrence, Maureen Boyle, Chasity Mayo, Catherine A. Rushworth, Moira Anderson, Dorothy Wallis, Jayme Walters

Instructional Technology and Learning Sciences Faculty Publications

This paper examines the first year of collaboration between the Bear River Region LGBTQ+ Community Coalition and queer residents in rural northern Utah, United States, using a hybrid participatory design (PD) approach. Using Yep’s queer relationality theory, we examine how hybrid spaces were designed and iteratively adapted to support inclusion, care, and collective agency among LGBTQ+ community members. Drawing on Community Coalition Action Theory and queer PD, we analyze four cases from May 2024 to June 2025 including workshops and regular meetings to explore how relational practices evolved across different formats and phases of coalition development. In this paper, we …

Intrusive Advising Practices And Community College Credential Attainment In Rural Students, Leslie Reeder

College of Education

This qualitative narrative study addressed the persistent problem of lower postsecondary completion rates among rural students, particularly first-generation students, whose lower educational attainment contributes to economic challenges and diminished quality of life in rural communities. Guided by Bronfenbrenner’s ecological systems theory, this study examined first-generation rural students’ perceptions of their experiences with secondary and postsecondary advisors and the impact of intrusive advising on postsecondary credential attainment. The study explored how students described advising experiences and how intrusive advising influenced persistence and credential completion. Data were collected through semi-structured interviews with first-generation rural students and analyzed using thematic analysis. Five themes …

Community - Volume 11

be Still

No abstract provided.

Namaste, Kem Chho, Jason Nguyen

be Still

No abstract provided.

In That Space, We Were Communis, Eliana Namen

be Still

In reflecting on my understanding of community, there were many moments I could have chosen to write about. Yet the memory of my grandmother’s death remains the one most deeply etched in me. When I began considering what community truly meant in my own life, I found myself returning to that room. In her illness and eventual passing, she drew together an extraordinary constellation of people: family, friends, neighbors, whose lives she had quietly shaped. Her life created ripples far beyond what any one person could see. In witnessing that gathering, I came to understand community not merely as shared …

Stronger Together: Healing Through Joy, Archana Banda, Nupur S. Kumar

be Still

Volunteering as Family Pals at Boggy Creek throughout medical school has reinforced the profound impact of communities united under a shared vision of uplifting one another. This organization cultivates a supportive camp environment for children with chronic medical conditions. One of the most meaningful aspects of these weekend adventures has been meeting children with conditions such as Type 1 Diabetes and VACTERL courageously navigating the challenges of their diagnoses while discovering new passions through activities including woodcraft, air hockey, boating, fishing, and archery.

Many times these children are excluded from normal camp experiences due to their special needs such as …

Exploring Workplace Wellness Programs From A Correctional Officer’S Perspective, Lolita Jeaneen Johnson

Walden Dissertations and Doctoral Studies

No abstract provided.

Study Reveals How Plants Sense, Adapt To Rising Temperatures, Clara Turnage

University of Mississippi News

OXFORD, Miss. – University of Mississippi researchers are studying how plants respond to heat at the molecular level, an important consideration for farmers, businesses and policymakers as global temperatures rise.

Engineering Nanoelectrocatalytic Systems For Co2 And Nitrate Conversion Into Value-Added Chemicals, Abdelrahman Mohamed Abdelmohsen

Theses and Dissertations

The thesis addresses two major related environmental crises: nitrate pollution of water systems and the ever-increasing levels of atmospheric carbon dioxide. Both challenges are closely linked to anthropogenic disturbance of nitrogen and carbon cycles and require sustainable, energy efficient mitigation techniques. In this study, we investigate electrochemical conversion routes as a unified approach to convert these pollutants into value-added compounds: ammonia (NH3) via nitrate reduction (NO3-RR) and ethylene (C2H4) via carbon dioxide reduction (CO2RR). The first half of this work deals with the design and engineering of Cu-Zn alloy electrocatalysts for efficient NO3-RR. Tuning the alloy composition and surface nanostructure …

Sense Of Belonging Among Undergraduate Students At The American University In Cairo: Demographic Trends, Barriers And Facilitators, Lamiaa M. Mohamed

Theses and Dissertations

A sense of belonging is widely recognized as a key determinant of undergraduate students’ academic success, well-being, and persistence in higher education. However, existing research is largely grounded in Western contexts and often emphasizes institution-level measures, with limited attention to how belonging is experienced and constructed by students in non-Western settings. This study examines undergraduate students’ sense of belonging at the American University in Cairo, focusing on factors that shape belonging and institutional practices that may strengthen it. Using a sequential mixed-methods design, the study examined 87 responses from a quantitative survey adapted from the University Belonging Questionnaire, followed by …

The Experience Of Newly Formed Syrian Female-Headed Households Refugees In Egypt: Challenges And Opportunities, Wasim Dia

Theses and Dissertations

This thesis examines the lived experience of Newly Formed Syrian Female-Headed Households in Egypt. It focuses on how the extended displacement reshapes gender roles, decision-making, and survival strategies. Since the beginning of the Syrian conflict in 2011, extensive family separation, death, disappearance, and male migration have occurred, leading to a significant rise in female-headed Syrian refugee households. As a result, displacement has intensified women’s vulnerability, generating new responsibilities and limited spaces for agency, especially within restrictive legal and socio-economic environments.

Based on in-depth qualitative interviews conducted in 2023, this research explores how Syrian refugee women navigate everyday life in Egypt …

Integrative Assessment Of Body Composition And Micronutrient Status In An Adult Egyptian Population, Roua Aref Nouh

Theses and Dissertations

Integrative Assessment of Body Composition and Micronutrient Status in an Adult Egyptian Population: A Functional and Biochemical Approach

Obesity and metabolic dysfunction are increasingly recognized as heterogeneous conditions that cannot be sufficiently characterized by body mass index (BMI) alone. Alterations in body composition, particularly central adiposity and skeletal muscle mass, may coexist with micronutrient imbalances even among individuals who fall outside conventional BMI-based obesity classifications. In clinical settings, such metabolic vulnerability is frequently accompanied by non-specific functional symptoms, highlighting the need for integrative assessment approaches that extend beyond weight-centered metrics. This cross-sectional study aimed to investigate the associations between micronutrient …

Understanding The Relationship Between Community Violence Exposure, Self-Compassion, And Ptsd In Chicago, Hadeel Hasan

Walden Dissertations and Doctoral Studies

No abstract provided.

Macropinocytosis Inhibition Attenuates Profibrotic Responses In Lung Fibroblasts And Pulmonary Fibrosis Models, Ivan O Rosas, Aaron K Mcdowell-Sanchez, Santiago Sanchez, Juan D Cala-Garcia, Alan R Waich Cohen, Elisa Ruiz-Echartea, Scott A Ochsner, Daniel C Kraushaar, Lindsay J Celada, Dandan Sun, Francesca Polverino, Cristian Coarfa, Neil J Mckenna, Konstantin Tsoyi

Faculty, Staff and Students Publications

Idiopathic pulmonary fibrosis (IPF) is a devastating chronic lung disorder with limited treatment options. Macropinocytosis is one of the key cellular processes involved in nutrient consumption from the extracellular environment under stress conditions. Here, we studied the role of macropinocytosis in experimental pulmonary fibrosis models. We found that macropinocytosis is increased in human lung fibroblasts (HLFs) derived from patients with IPF. The inhibition of macropinocytosis with 5-(n-ethyl-n-isopropyl)-amiloride (EIPA) inhibited profibrotic responses in IPF-derived and TGF-β1-stimulated HLFs and reduced pulmonary fibrosis in bleomycin-injured (Bleo-injured) mice. EIPA exerted its antifibrotic effects by regulating amino acid uptake, mammalian target of rapamycin complex 1 …

Ontology-Based Decision Support System For Improving Aquaculture Management, Thuy Thi Thu Pham, Phuong Thi Can, Nga Thi Thanh Ha

Journal of Marine Science and Technology–Taiwan

Early detection of shrimp diseases is vital for reducing losses and ensuring sustainable aquaculture. In this study, a novel ontology-driven framework for shrimp disease diagnosis that integrates environmental knowledge with machine learning-based image analysis is proposed. An ontology was constructed from a structured dataset of environmental parameters and farm conditions related to shrimp diseases, which formally represents concepts such as farm characteristics, environmental factors, symptoms, and disease types. Two public shrimp image datasets were subsequently used to train convolutional neural networks (ResNet50 and MobileNetV2) for automated disease classification. The predicted disease labels and confidence scores were mapped onto the ontology. …

Case Study On Operational Performance Improvement By Turbocharger Nozzle-Ring Modification In Shipboard Generators, Jong-Hun Im, Mukyeong Kang, Sang-Deuk Lee

Journal of Marine Science and Technology–Taiwan

Owing to increasingly stringent emission regulations imposed by the International Maritime Organization and rising fuel prices, the demand for enhanced energy efficiency and emission control in marine power systems is increasing. This study presents a case study in which the performance of an aging auxiliary generator is restored by modifying the turbocharger nozzle ring. The vessel, a 12-year-old crude-oil tanker, experienced repeated operational issues with its No. 3 generator. This included elevated exhaust gas temperatures, reduced intake air pressure, and frequent turbocharger surges. To address these challenges, the nozzle-ring blade angle was reduced by approximately 2° using spare components, while …

Towards Sustainable Marine Education: Assessing High School Students’ Understanding Of Conservation Concepts, Cheng-Chieh Chang, Tsuyoshi Sasaki, Ya-Yin Liao, Ling-Ya Hung, Liang-Ting Tsai

Journal of Marine Science and Technology–Taiwan

This study assesses the concepts of marine resource conservation and sustainability among Taiwanese high school students by developing a Chinese version of the Marine Resources Conservation and Sustainability Scale. Grounded in the cognitive, socio-emotional, and behavioral learning objectives outlined in UNESCO’s Education for Sustainable Development Goals (ESDGs), the scale targets students aged 16 to 18 to examine gender differences in marine knowledge and conservation concepts. The scale comprises 31 items across four dimensions: the first section evaluates marine knowledge, while the remaining dimensions utilize a four-point Likert scale to assess cognitive, socio-emotional, and behavioral learning objectives, respectively. The results indicate …

Dynamic Governance Of Transboundary Fisheries Through Deep Learning And High-Frequency Vessel Tracking Data For Climate-Resilient Management: An Application To The East China Sea, Qin Lin, Yaqing Shu, Manel Grifoll, Hongxiang Feng

Journal of Marine Science and Technology–Taiwan

Transboundary fisheries governance is increasingly challenged by jurisdictional conflicts, regulatory asymmetries, and climate-induced stock shifts in fish stocks, especially in contested regions like the East China Sea (ECS). This study capitalizes on China’s high-frequency BeiDou Navigation Satellite System (BDS) data (June 2021–May 2022) to pioneer a CNN-BiLSTM deep learning model to dynamically identify fishing hotspots and evaluate policy effectiveness. By integrating vessel trajectories, environmental variables, and regulatory events, we examine spatiotemporal patterns of fishing effort relative to seasonal bans, extreme weather, and quota systems. Key findings reveal: (1) post-moratorium (September–December) concentration of fishing intensity, peaking in November; (2) significant weather-driven …

Lock Scheduling Decisions And Strategy Optimization Under Operation Interruption Scenarios, Junhe Li, Qiang Zhang, Junpeng Jiang, Jiangchao Bao

Journal of Marine Science and Technology–Taiwan

Locks are critical nodes in inland waterway transportation systems that concentrate vessel traffic between upstream and downstream reaches, making their operations highly sensitive to hydrological conditions. Therefore, disruptions caused by droughts, floods, or routine maintenance can easily trigger congestion. To address this issue, this study systematically examines the interrelationships among the number of ships awaiting passage, scheduling strategies, the trade-off between lock chamber utilization and ship waiting time, the influence of ship entry sequences on user satisfaction, and the combined effects of these factors on overall lock scheduling performance. Based on these analyses, an integrated decision-making model for two-stage ship …