93887 research outputs found
Sort by
Indiana Geology and the Sampling Process
Get PDFAttendees will gain a comprehensive understanding of the geologic layers of Indiana, why it is important to take them into consideration for roadway construction, and how the in-house sampling process functions
Automated Machine Guidance (AMG) Technology and 3D Modeling
Get PDFIn this session, we’ll explore how AMG improves roadway construction by cutting labor costs, enhancing data flow, and boosting project quality, ride, and duration. We’ll discuss how 3D models guide projects without traditional survey layouts and how AMG also transforms surveyors’ approach to large projects and enable more efficient and precise data collection without relying on string-lines or subgrade stakes. Real-world lessons learned from engineering teams will be shared
Airfield vs. Roadway Pavements: Evaluation and FAA Impacts
Get PDFThis presentation explores the critical differences in ASTM requirements for evaluating airside pavements vs. roadway and parking lot pavements. Attendees will learn about different pavement rating methods, their application in airport environments, recent updates to pavement strength reporting, and how PCI and PCR impact FAA grant funding eligibility—all essential knowledge for optimizing compliance and securing financial support
A Preliminary Examination of ChatGPT’s Capability in Developing Construction Education Instruments Through Bloom’s Taxonomy
Get PDFEffective assessment is essential in construction management (CM) education to evaluate student understanding of industry-demanded skills. Integrating the Bloom’s Taxonomy, American Council for Construction Education (ACCE) provides student learning outcomes (SLOs) for targeted learning objectives, as well as guiding assessment development. However, crafting high-quality assessment questions remains challenging for CM instructors. This study explores the potential of ChatGPT to generate assessment questions aligned with Bloom’s Taxonomy and using two ACCE student learning outcomes (SLOs): 1) creating construction project cost estimates and 2) analyzing methods, materials, and equipment. Generated questions were evaluated for alignment with Bloom’s levels, clarity, sufficiency, feasibility, and relevance. Results indicate ChatGPT can produce cognitively appropriate questions, though issues with clarity and completeness remain. The study concludes that ChatGPT can assist CM educators in assessment development when supported by effective prompt design and added context. Future research should explore expanded data collection and domain-specific training for improved outcomes
Smartphone-based Circular Plot Sampling for Forest Inventory
Get PDFCircular sample plots are key to forest inventory, but current methods are often costly or labor-intensive. We propose a simple, smartphone-based approach to measure tree DBH and locations within a circular plot. It offers accurate results and is accessible to both researchers and local forest managers
Teaching Honesty in a Fractured and Fragile Democracy
No full textThis is an editorial introduction to this special issues symposium on Sarah Stitzlein\u27s book, Teaching Honesty in a Populist Era. We discuss why we decided to feature this new book in Education and Culture and discuss some of the contributions of the book, as well as provide a quick overview of the essay reviews of the book and some of the themes that cut across them
Trumping Laminated Inquiry: Intellectual Honesty Reconsidered
No full textThis short review examines Chapter 5 of Sarah M. Stitzlein’s Teaching Honesty in a Populist Era: Emphasizing Truth in the Education of Citizens, concentrating on “The Role of Honesty in Teaching About Controversial Issues.” Emphasizing what I call “zetetic avoidance creep” (ZAC), the review explores how teachers may either consciously or unconsciously drift from open inquiry toward more superficial, more palatable educational discourse to maintain harmony. Stitzlein’s chapter offers a compelling case for preserving honest engagement — even with divisive topics — to bolster democratic and intellectual endeavors. By analyzing three key passages, I underscore Stitzlein’s emphasis on transparency and robust debate, concluding with reflections on ZAC’s broader implications for educational practice
Canadian Security Intelligence Service (CSIS)
No full textApril 24, 2025 presentation for Canada\u27s GovInfo Day Spring 2025 hosted by Simon Fraser University in British Columbia and Internet Archive Canada. Provides information about the publicly available information resources produced by the Canadian Security Intelligence Service (CSIS) which is the Canadian Government\u27s foremost national intelligence agency. Provides information about this agency\u27s statutory organization, types of publicly available reports they produce, information about other Canadian government intelligence agencies, and parliamentary oversight of Canadian government intelligence operations. Lists additional resources for finding information about CSIS and explains the benefits of having access to these resources for users
Experimental comparison of cycle modifications and ejector control methods using variable geometry and CO2 pump in a multi-evaporator transcritical CO2 refrigeration system
Get PDFTo reduce the direct global warming impact of refrigerants in HVAC&R applications, low-global warming potential (GWP) refrigerants, including natural refrigerants, have been extensively investigated as alternatives to hydrofluorocarbon (HFC) refrigerants. Among the natural refrigerants, Carbon Dioxide (CO2) offers several advantages, such as excellent transport and thermo-physical properties, being neither toxic nor flammable, and having a low price and high availability around the world. However, the high critical pressure and low critical temperature of CO2 often lead to transcritical operation, resulting in lower efficiency due to the additional compressor power necessary to achieve transcritical operation relative to subcritical HFC cycles. Therefore, a number of cycle modifications are used to enhance the coefficient of performance (COP) of transcritical CO2 cycles to meet or surpass those of HFC cycles. This paper provides a systematic experimental investigation of four such cycle architectures by employing the same multi-stage, two-evaporator CO2 refrigeration cycle test stand, 3 of these configurations in transcritical and 1 in subcritical conditions. The four cycles architectures included intercooling, open economization, an internal heat exchanger and two different ejector control approaches. Specifically, a variable-diameter motive nozzle and a variable-speed liquid CO2 pump located directly upstream of the ejector motive nozzle inlet were analyzed. Based on the experimental data, the maximum COP improvements are 4.64 % and 9.47 % when the ejector and the internal heat exchanger are used, respectively. The CO2 pump, once successfully stabilized, can control the ejector, increase its efficiency by up to 15 % and increase the cooling capacity to a maximum of 6.2 %. Nevertheless, a reduction in COP is measured when the pump is in use; however, unlike the other three different configurations, it was only analyzed under subcritical conditions