91341 research outputs found
Sort by
The Effect of Age on Perceptual Speed
Get PDFPerceptual speed (PS) tests have been used in both military and civilian pilotselection batteries for decades. However, few data are available showing theeffect of age on performance. This paper presents data from refereed journalarticles, manuals for cognitive batteries used in pilot selection, and studiesconducted by the authors to examine age effects. The data sources show arelatively consistent picture: Candidates in their late 20’s and early 30’s show thebest performance. Performance then gradually declines into the candidates’ early 60’s
Review of Fatigue Micro-Mitigations for Application in Air Traffic Control: Benefits, Challenges, and Feasibility
Get PDFAir traffic controllers (ATCs) are one of the primary drivers of safe and resilient operations in the National Airspace System. The FAA has implemented manylarge-scale fatigue mitigation strategies (e.g., scheduling policies, break time requirements, and time-on-position limits) to combat fatigue. Given the performance benefits related to managing fatigue, ATCs may also benefit from simple, practical fatigue interventions and that could improve job performance.This review targets ‘micro-mitigations,’ which we define as mitigations that maybe unobtrusive, can be quickly implemented, have a rapid impact, and are easy to engage. We explore the possible utility of five micro-mitigations to help minimize fatigue/improve alertness: Chewing gum, peppermint, exercise, video games, andbody temperature regulation. Each method presents unique benefits, challengesand feasibility issues that are discussed for use by ATC
Faculty Senate Meeting Agenda and Minutes, January 27, 2025
Get PDFAgenda and minutes from the Wright State University Faculty Senate Meeting held on, January 27, 2025
Inception and Rupture of Intracranial Aneurysms with Daughter Sacs: A Comprehensive Hemodynamics Analysis
No full textBackground and Purpose: Intracranial aneurysms (IAs) with daughter sacs (DSs) have an increased risk for rupture yet the hemodynamic factors contributing to DS pathophysiology are still under-investigated. This study aimed to investigate hemodynamic factors in DS generation and rupture using anatomic and ablated IA models under various DS scenarios
The Phenology of Nine Native Tree Species in Gera Moist Afromontane Forest, Southwest Ethiopia
No full textPhenology is the study of the time series of biological phenomena of plants, such as flowering, fruiting, and leaflessness, related to seasonal change. Ethiopia is rich in vascular plant species. However, the tree phenology of selected species has been less studied. Therefore, the study aimed to document the phenology of nine native tree species in the Gera moist Afromontane forest in southwest Ethiopia. Forty-five mature trees (five of each species) were selected and numbered according to their species. The intensity of flowering and fruiting was assigned to four different classes. PAST software (version 4.03) and Microsoft Excel (version 2016) mapped phenological phases and durations. Almost all leaf growth occurs throughout the year for the studied tree species. Different phenophases of flowering for Ficus sur, Polyscias fulva, and Croton macrostachyus were seen from February to June. On the other hand, for Millettia ferruginea, Allophylus abyssinicus was seen from September to January. Finally, for Bersama abyssinica, Syzygium guineense, and Olea welwitschii were seen from December to April. Most of the tree species (Ficus sur, Millettia ferruginea, Bersama abyssinica, Albizia gummifera, Syzygium guineense, and Olea welwitschii) made fruit from December to the end of May. Polyscias fulva, Croton macrostachyus, and Allophylus abyssinicus made their fruiting from June to December. We did not know any flowering stage for Albizia gummifera during the study period. A species-specific phenological study of native tree species is important for understanding the physiological aspects of the Gera forest. Long-term periodical observations on plant phenology will be required for the studied species
The KnowWhereGraph Ontology
No full textKnowWhereGraph is one of the largest fully publicly available geospatial knowledge graphs. It includes data from 30 layers on natural hazards (e.g., hurricanes, wildfires), climate variables (e.g., air temperature, precipitation), soil properties, crop and land-cover types, demographics, and human health, various place and region identifiers, among other themes. These have been leveraged through the graph by a variety of applications to address challenges in food security and agricultural supply chains; sustainability related to soil conservation practices and farm labor; and delivery of emergency humanitarian aid following a disaster. In this paper, we introduce the ontology that acts as the schema for KnowWhereGraph. This broad overview provides insight into the requirements and design specifications for the graph and its schema, including the development methodology (modular ontology modeling) and the resources utilized to implement, materialize, and deploy KnowWhereGraph with its end-user interfaces and public query SPARQL endpoint
Dietary Organic Selenium Supplementation Improved Some Gross Morphological Parameters and Biochemical Characteristics of Testes in Young Male Kids
Get PDFSelenium (Se) plays a vital role in improving reproductive health in ruminants. This study evaluated the impact of Se supplementation on testicular health in young male goats. Twenty goats (2–3 months old, 8.5–10 kg) were randomly assigned to two groups: Control (C, n=10) receiving a basal diet (0.037 mg Se/kg) and Se-Yeast (SY, n=10) supplemented with 0.3 mg Se/kg diet. The trial lasted eight weeks. Results showed that testis weight was significantly higher in the SY group (26.8 ± 2.5 g) compared to C (22.4 ± 2.1 g, p \u3c 0.05). Testis length, width, and circumference also increased significantly in SY goats (4.5 ± 0.3 cm, 2.9 ± 0.2 cm, and 7.4 ± 0.4 cm, respectively) compared to control (3.9 ± 0.4 cm, 2.5 ± 0.3 cm, and 6.7 ± 0.5 cm; p \u3c 0.05). Serum cholesterol was higher in SY (135.27 ± 2.34 mg/dl) than in C (121.15 ± 8.74 mg/dl, p = 0.02), while triglycerides were lower (95.99 ± 1.37 vs. 114.38 ± 1.84 mg/dl, p = 0.0003). HDL increased (51.97 ± 2.10 vs. 45.02 ± 1.32 mg/dl, p = 0.03), and LDL decreased (54.23 ± 1.81 vs. 61.27 ± 1.56 mg/dl, p = 0.02) in SY group. Total serum protein rose significantly (8.14 ± 0.79 vs. 5.25 ± 0.06 mg/dl, p = 0.03), as did testosterone levels (1.95 ± 0.08 vs. 1.43 ± 0.06 ng/ml, p = 0.002). In conclusion, selenium supplementation significantly improved testicular morphology, lipid profile, protein levels, and testosterone, indicating enhanced reproductive health in goats
Soil Degradation of Solvent-Cast PHA Films Produced By Bacillus Tequilensis PWF Using Waste Polyethylene Terephthalate (PET)
Get PDFPolyhydroxyalkanoate (PHA) aliphatic polymers however efficiently biodegradable, still pose a contradiction with the principles of green chemistry. Use of bacterial strains capable of degrading synthetic plastics for the production of biopolymers i.e., PHAs may aid in reduction of plastic pollution. Bacterial strains PWA; Bacillus subtilis (MH142143), PWF; Bacillus tequilensis (MH142145), and PWG; Bacillus safensis (MH142146) were grown on waste shredded PET and PET flakes. Highest bioconversion of PET to PHA was observed using PET flakes. Strain PWF produced 40.47 % (0.815 g/L) and 31.80 % (0.626 g/L) PHA using PET flakes and shredded PET at 48 h, respectively. Whereas highest PHA production (53.67 % PHA; 1.15 g/L) on glucose was obtained from 2.19 g/L CDW at 48 h. FT-IR analysis showed absorptions at known PHA marker bands at 1720.398 cm-1 in PHA sample of strain PWF. Polymer degradation in natural environment (20-week soil burial) was measured in terms of weight loss (decigrams; dg). PHA from Strain PWF showed up to 61 % degradation by weight i.e., from 1.0 dg to 0.391 dg. SEM analysis of degraded polymer films showed presence of cracks, crevices, bumps, and fractures. Bacterial and fungal colonization amidst crevices was also observed. This study provides a cost-and-time economic, green synthesis-based method for reliable repurposing of nondegradable plastic wastes. Focus of subsequent studies can be the role of ambient microbiota during polymer degradation and how it impacts the natural soil environment
Postcard from Unknown to [Milton Wright], from Paris, France (Tour Eiffel)
Get PDFAn undated postcard from Paris, France featuring the Eiffel Tower. Collected by Milton Wright.https://corescholar.libraries.wright.edu/special_ms711_postcards/1085/thumbnail.jp