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Tutorial: A Guide to Getting Started With the Clinical Fellowship Experience
No full textPurpose: The clinical fellowship (CF) experience is a pivotal time for speech-language pathologists as it marks the transition from being a student clinician to practicing as an independent clinician. The Clinical Fellow embarks on this process with the support of a CF mentor, who serves a critical role in supporting the development and growth of a new professional. The Clinical Fellow and mentor must also consider the standards and implementation procedures defined by the Council for Clinical Certification in Audiology and Speech-Language Pathology (CFCC) for the Clinical Fellow to successfully obtain the American Speech-Language-Hearing Association (ASHA) Certificate of Clinical Competence (CCC) in speech-language pathology. This is because the CFCC has defined eight standards needed to obtain the CCC, and the CF fulfills only one of these standards (Standard VII: Speech-Language Pathology CF). Although ASHA provides many detailed resources related to the standards, the CCC application itself, and the specific requirements of the Clinical Fellow and mentor during the CF, the complexity of the overall certification process can make understanding the requirements a challenge. Conclusions: This tutorial presents the guidelines, processes, and expectations of the CF in accordance with the CFCC Standard VII in an integrated format, with potential areas of confusion clarified and interpreted. This tutorial also provides additional tips outside of the basic CF requirements, with the goal of serving as a comprehensive starting guide for students planning for the CF, clinicians considering the role of mentor, or anyone navigating the CF process
A Test Rig for an Aircraft Propeller Powered by Battery Motor
No full textThe propeller test rig is a crucial component in aeronautical engineering that plays a vital role in the development, testing, and optimization of propeller systems for aircraft. This research outlines the design, development, and performance evaluation of a state-of- the- art propeller test rig developed for research and testing purposes. The primary objective of this project is to enhance the understanding of propeller dynamics and efficiency, leading to the improvement of aircraft propulsion systems. The test rig provides a controlled environment to evaluate and compare multiple propeller designs, aiding engineers in making informed decisions during the design process. An advanced data acquisition system is integrated to capture essential performance parameters, including thrust, rotational speed, and power consumption. The experimental setup allows for customization of test parameters, such as varying rotational speeds, blade angles, and propeller sizes. The analysis revealed crucial insights into the correlation between design parameters and propeller performance, aiding in the optimization process. The project’s outcomes open avenues for future research and development in the field of propulsion technology, making it a valuable asset for the engineering community
Development of an Integrated Unmanned Aerial System (UAS) Validation Center
No full textUnmanned Aerial Systems (UAS) have the potential to drastically change how civil infrastructure is inspected, monitored, and managed. This innovative technology can ensure the inspector’s safety, provide additional inspection information, and reduce costs. However, a challenge arose as this industry expanded: a lack of standardized guidelines or minimum performance requirements to perform these operations. With no standard tests to verify UAS’ ability to conduct inspections and unknown detection capabilities, agencies are left to rely upon consultants’ or vendors’ promotional material and claims when considering UAS deployment. The following pooled fund project proposes a series of performance-based assessments and procedural documentation to establish minimum standards for using UAS in bridge inspection applications. Through this work, the following performance-based tests have been developed: (1) a controlled environment simulating bridge geometries to assess the overall capability of a UAS used for bridge inspection [evaluation chamber], (2) an assessment of UAS performance under multiple environmental temperatures [environmental temperature chamber], (3) a UAS performance assessment under varying wind speeds [wind chamber], (4) a consolidated checklist compiling Federal Aviation Administration guidelines and best practices [flight checklist], (5) a field assessment of UAS under conditions analogous to on-site bridge inspection [practical test]. For infrastructure owners, embracing these performance-based assessments will help ensure that UAS meets a minimum level of performance and allow owners to verify and distinguish between various UAS used for bridge inspection. This work also discusses positive feedback from beta testing provided by industry and infrastructure owner representatives, showcasing the effectiveness of providing an authentic assessment of UAS bridge inspection capabilities. Future work encourages the wide implementation of this assessment program and encourages owners to refrain from using untested technology in the inspection of their infrastructure
A Feasibility Study into the Usability and Application of an Unmanned Aerial Vehicle for Aircraft Inspection and Quality Assurance Inspections
No full textThe global aviation industry is often characterized as one of the safest modes of transportation in the modern world. With an abundance of quality assurance inspections and checks to determine operations safety, modern-day commercial aircraft that are utilized for passenger and cargo flights are held to a higher safety standard defined by regulatory bodies, such as the Federal Aviation Administration in the United States of America and the European Union Aviation Safety Agency in the European Union. While these quality standards are maintained via a series of inspections, checks, and preventative maintenance procedures, they are limited to only visual or central maintenance-generated alerts recorded and presented by the aircraft either during flight or once the aircraft is on the ground. Without the availability of scaffolding or large-scale maintenance stands at the gate (as you would normally find within a hangar facility), the ability of conducting a visual inspection can only yield a limited amount of information regarding the aircraft’s structural condition. Taking this into consideration, a possible solution for this problem could stem from the use of a readily available and easily customizable apparatus called an unmanned aerial vehicle. Although these vehicles have already been in use for recreational remote-flying, their systems and structures can be optimized for inspection purposes. With the presence of adequate flight equipment on board to maintain safe flight operations as well as conduct a visual inspection of inaccessible areas of the aircraft, this solution could revolutionize aircraft maintenance inspections at airport terminals and help ensure that the integrity of an aircraft is up to regulated safety standards. This in-depth analysis of current regulatory and operations guidelines is designed to determine whether a suggested proof-of-concept design would allow for aircraft inspection vehicles to be feasible in the future
Linguistic Knowledge for Teachers: Supporting Multilingual Learners in the Science of Reading Era
No full textThe Science of Reading (SOR) has gained widespread attention as a framework for strengthening foundational literacy skills, yet its implementation often assumes a monolingual English context. This brief argues that equitable SOR practices require teachers to develop a working knowledge of linguistics to better support multilingual learners. Six core areas of linguistic knowledge: phonology, morphology, syntax, semantics, pragmatics, and dialect variation, are described with attention to their impact on reading development. Each area includes examples of cross-linguistic differences that shape how students acquire English literacy and highlights practice implications for classroom instruction. The brief concludes by emphasizing the need for teacher preparation and professional development that integrates linguistic knowledge to ensure SOR-aligned instruction leverages, rather than overlooks, students’ full linguistic repertoires
Application of nano science and nano technology in developing advanced cementitious materials
No full textPerformance Evaluation of Concrete Mixtures with Calcined Clay and Portland Limestone Cement
No full textCalcined clay offers a promising solution to the environmental challenges associated with traditional concrete production, which relies heavily on portland cement and significantly contributes to global carbon emissions. This study investigates the potential of calcined clay as a sustainable supplementary cementitious composite (SCM) for concrete applications, focusing on its integration into portland limestone cement (PLC) systems at 30% and 50% replacement ratios. For comparison, concrete mixtures with PLC alone, PLC with 30% reclaimed fly ash, and PLC with 50% slag—representative of conventional SCM practices—are also studied. The study evaluates fresh and hardened properties, hydration mechanisms, and environmental impacts through a comprehensive experimental program that includes particle size analysis, strength activity index, isothermal calorimetry, compressive strength testing, rapid chloride permeability, and life cycle assessment. Findings reveal that calcined clay can deliver comparable mechanical performance while enhancing durability and sustainability, positioning it as a viable material for eco-friendly concrete production
Performance of Low-Clinker, High-Limestone Multiphase Blended Cement
No full textThis study evaluates mechanical properties and porosity of binders combining Portland Limestone Cement (PLC) with SCMs like GGBFS, Class C (FAC), and Class F (FAF) fly ashes. GGBFS-based binders showed the highest compressive strength of 33.35MPa and lowest porosity (of 41.9%) due to their high reactivity, while FAF-based binders had lower strength and higher porosity (of 14.5 MPa and 47.3%), due to slower pozzolanic reactions. SCM combinations balanced reactivity and densification, offering a pathway for sustainable, high-performance binder development
Role of carbide slag in the preparation of low-clinker cement: Insight into hydration kinetics and microstructure
No full textThe potential to reduce clinker content in LC3 cement to up to 50% and below is promising, thanks to the synergistic effects of its constituents. However, lower clinker content can lead to challenges such as reduced pH due to significant consumption of precipitated CH, which may compromise durability and mechanical performance. Addressing these issues, we explore the use of carbide slag as an additional source of calcium hydroxide (CH) in LC3 with a clinker factor of 50% and below 50%. In overall, the addition of carbide slag produced positive results with a significant retainment of strength similar to reference LC3-50. It was observed that part of the extra CH from carbide slag was consumed during the hydration in LC3-50. The optimized content of 8% CH in LC3- 50-8CH gained significantly higher early strength than the reference LC3-50 at early age and later age, which was attributed to improved pozzolanic reaction degree of calcined clay. Further reduction in clinker content to 40% in LC3-40 could achieve a similar strength at LC3-50 at 28 days. However, the hydration degree of C3S and C2S was reduced with the addition of CH at low clinker content below 50%
IN-SITU STABILIZATION OF CACO3 POLYMORPHS IN CEMENTITIOUS SYSTEMS
No full textThe technology of injecting CO2 in a cementitious system (concrete) during mixing has demonstrated scalability and significant potential. This process involves CO2 dissolving in water, releasing carbonate and bicarbonate ions that react with calcium ions from dissolving clinker and hydrate phases, leading to in-situ CaCO3 precipitation. This study examines CaCO3 formation pathways and explores stabilizing favourable polymorphs using additives. Cement paste samples were analyzed using FTIR and X-ray diffraction. Initial results suggest CaCO3 formation follows Ostwald\u27s process. In early hydration (up to 6 hours), amorphous calcium carbonate and metastable crystalline polymorphs (vaterite and aragonite) form. These metastable forms then crystallize into calcite, the most stable polymorph, observed at 24 hours and beyond. Various amino acids (e.g., L-Arginine, L-Aspartic acid) are being tested to stabilize metastable polymorphs. Preliminary findings indicate these acids can successfully stabilize metastable polymorphs in-situ within CO2-injected cementitious systems