Engineering Commons^™

Hvac System Analysis And Energy Audit: The Providence Athenaeum, Nicholas Farland, Trevor Larson, Justin Taylor, Cameron Wendler, Anthony Ruocco, Janet Baldwin, Arnold Robinson

Engineering and Construction Management

To evaluate the impact of potential modifications to the HVAC system the Historical Value Adding Consultants developed a building energy model. The building energy model was constructed using a Microsoft Excel spreadsheet that utilizes typical meteorological year (TMY) data to determine the average energy usage of the Athenaeum for a typical year. The model has been validated against actual energy usage and is used to identify and quantify energy savings resulting from design alternatives.

Aircraft Materials And Analysis, Tariq Siddiqui

Publications

Note: This pdf only includes chapter 1 and 10.

Complete coverage of aircraft design, manufacturing, and maintenance

Aircraft Materials and Analysis addresses aircraft design, mechanical and structural factors in aviation, flight loads, structural integrity, stresses, properties of materials, compression, bending, and aircraft fatigue. Detailed analysis of the failure process is provided.

This authoritative guide examines materials used in aircraft construction such as aluminum, steel, glass, composite, rubber, and carbon fiber. Maintenance procedures for corrosion and aging aircraft are discussed and methods of inspection such as nondestructive testing and nondestructive inspection are described. Accident investigation case studies review aircraft design, material …

Cracking The Code On Stem: A People Strategy For Nevada's Economy, Jessica A. Lee, Mark Muro, Jonathan Rothwell, Scott Andes, Siddharth Kulkarni

Brookings Mountain West Publications

Nevada has in place a plausible economic diversification strategy—and it’s beginning to work. Now, the state and its regions need to craft a people strategy. Specifically, the state needs to boost the number of Nevadans who possess at least some postsecondary training in the fields of science, technology, engineering, or math—the so-called “STEM” disciplines (to which some leaders add arts and design to make it “STEAM”).

The moment is urgent—and only heightened by the projected worker needs of Tesla Motors’ planned “gigafactory” for lithium-ion batteries in Storey County.

Even before the recent Tesla commitment, a number of the more high-tech …

Cracking The Code On Stem: A People Strategy For Nevada's Economy Executive Summary, Jessica A. Lee, Mark Muro, Jonathan Rothwell, Scott Andes, Siddharth Kulkarni

Brookings Mountain West Publications

Nevada has in place a plausible economic diversification strategy—and it’s beginning to work. Now, the state and its regions need to craft a people strategy. Specifically, the state needs to boost the number of Nevadans who possess at least some postsecondary training in the fields of science, technology, engineering, or math—the so-called “STEM” disciplines (to which some leaders add arts and design to make it “STEAM”).

The moment is urgent—and only heightened by the projected worker needs of Tesla Motors’ planned “gigafactory” for lithium-ion batteries in Storey County.

Even before the recent Tesla commitment, a number of the more high-tech …

Numerical Investigation Of Boiling In A Sealed Tank In Microgravity, Sonya Lynn Hylton

ETD Archive

NASA's missions in space depend on the storage of cryogenic fluids for fuel and for life support. During long-term storage, heat can leak into the cryogenic fluid tanks. Heat leaks can cause evaporation of the liquid, which pressurizes the tank. However, when the tanks are in a microgravity environment, with reduced natural convection, heat leaks can also create superheated regions in the liquid. This may lead to boiling, resulting in much greater pressure rises than evaporation at the interface between the liquid and vapor phases. Models for predicting the pressure rise are needed to aid in developing methods to control …

What Role Does Mathematical Preparedness Play For Engineering Students Who Transfer From And Ordinary Degree Into An Honours Degree?, Michael Carr, Marisa Llorens, Susan O'Shaughnessy, Anne Marie Mccarrick, Domhnall Sheridan

Conference papers

Students who have not achieved a high level of mathematics at secondary school but have a pass in ordinary level mathematics have the option of entering onto a 3-year Ordinary degree (Level 7). Upon successful completion of this award students may apply to progress to the third year of the Honours degree. Up until relatively recently an upper merit (60%) was the minimum required to make this transition. In recent years this requirement has been reduced with many students with lower marks being offered the possibility of transferring.

Relatively little work has been done on the transition from an Ordinary …

In Situ Engineering Of Urchin-Like Reduced Graphene Oxide-Mn 2o3-Mn3o4 Nanostructures For Supercapacitors, Alfred Tawirirana Chidembo, Seyed Hamed Aboutalebi, Konstantin Konstantinov, Charl Jeremy Jafta, Hua-Kun Liu, Kenneth Ikechukwu Ozoemena

Australian Institute for Innovative Materials - Papers

We report the use of a spray pyrolysis method to synthesize high surface area (BET surface area of 139 m2 g-1) self-organized, micron sized urchin-like composites made up of reduced graphene oxide and needle-shaped manganese oxide (rGO-Mn2O3-Mn 3O4). Maximum capacitances of 425 Fg-1 at 5 mV s-1 from a three electrode set up and 133 Fg-1 at a current density of 0.2 Ag-1 were recorded using an asymmetric two electrode set up with graphene as the anode. The composite material also showed a capacitance retention of 83% over 1000 cycles. We attribute this remarkable performance to the high specific surface …

A Tool To Investigate The Status Of Engineering Asset Management In Organizations, Khaled O. El-Akruti, Tieling Zhang, Richard Dwight

Faculty of Engineering and Information Sciences - Papers: Part A

This paper presents a framework which addresses a series of activities defined in Engineering Asset Management (EAM). This framework is proposed to serve as a guideline of organizations when investigating if the status of the EAM system that they have in place is adequate to achieve the intended objectives. It also serves as a guide for researchers in EAM. The framework ensures a holistic approach to EAM in place that it explores the required asset management activities, relationships and mechanisms for achieving the organizational goals. In order to demonstrate the framework, a ‘retroductive’ approach in the context of case study …

Hysteretic Controlled Dc-Dc Converters, Shweta Chauhan

Browse all Theses and Dissertations

Switched-mode DC-DC converters are widely used in applications requiring step-up and step-down of DC voltages or currents. These converters find their use in portable applications such as laptops and smart phones, radio-frequency power amplifiers, as light emitting diode (LED) drivers, etc. The power converters consist of a switching network, energy storage elements such as inductors and capacitors, and a load resistor. Transformers are used in converters, which require isolation. The switching network comprises of MOSFETs and diodes. With improvement in the VLSI technology, smaller MOSFETs with increased power handling capability are pushing the speed of operation of these power converters …

Integrating Technology And Engineering In A Stem Context, Barry N. Burke, Philip A. Reed, John G. Wells, Robert E. Yager (Ed.), Herbert Brunkhorst (Ed.)

STEMPS Faculty Publications

(First paragraph) Imagine students entering the classroom with an enthusiasm that cannot be contained. They come from all walks of life and with different experiences and backgrounds and are eager to engage in learning. Inspiration and innovation are on their mind. What they learned in their science and math classes is now being applied in another class they take called Technology and Engineering. Opportunity is what they see for their future. Something about connecting all the dots from all their classes propels them to change their outlook, to get involved, to get excited about school and to envision their future.

Chronic Toxicity Of Nano Metallics On Red Swamp Crayfish (Procambarus Clarkii) In Laboratory And Mesocosm Studies, Jake Andrew Farlow

LSU Master's Theses

Nanotechnology has become integrated in commercial, industrial and medical products, and its use has grown exponentially in the past several years. Although potential applications of nanoparticles (NPs) are numerous, concerns about their water quality, environmental, and human health impacts remain unclear. Crayfish are ubiquitous to streams and wetland habitats, are used as a food source, and inhabit areas that could be impacted by water quality issues. Numerous studies have been conducted on the toxicity of various classes of agricultural pesticides and oils to crayfish (Procambarus clarkii) as a non-target organism. However, there is little evidence published on chronic toxicity of …

The Influence Of Mesa Activities On Underrepresented Students Nsf Dr K-12 Proposal 1020019, C. Hailey, Chandra Austin Stallworth, Cameron Denson, Daniel L. Householder

Mechanical and Aerospace Engineering Faculty Publications

Mathematics, Engineering, Science Achievement (MESA) outreach programs are partnerships between K-12 schools and higher education in nine states. MESA efforts introduce integrated experiences in science, mathematics and engineering to K-12 students from groups that are traditionally underrepresented in the STEM disciplines. This exploratory study examined the influence of selected MESA activities on students' self-efficacy, their perceptions of engineering, and their interest in engineering and other STEM fields. Field trips, guest lecturers, design competitions, hands-on activities and student career and academic advisement were of specific interest in this survey. The project also investigated the relationship between student engagement in MESA and …

Teaching Laboratory Courses Using Distance Learning Technologies, Steve C. Hsiung, John Ritz

Engineering Technology Faculty Publications

Conducting laboratory activities is essential for teaching and learning in engineering and technology subjects. This article discusses explorations made by a research team to find solutions to enable the distance-learning delivery of laboratory courses on embedded microcontroller technology topics. In addition, this article includes a review of videoconferencing and course management tools, uniquely designed laboratory equipment and supporting curriculum materials, and statistical evidence showing students can learn technical laboratory content in distance-learning environments.

Improving Motion Imagery Analysis: Investigating Detection Failures, Remembering To Perform Deferred Intentions, Michael R. Nickels

Browse all Theses and Dissertations

Advances in automation have led to an increased prevalence of human multitasking in intelligence, surveillance, and reconnaissance operations. Despite advancements in computer-vision research, almost all video data collected must be processed by human analysts. Traditionally, analysts are plagued with the presence and possible overabundance of interruptions that fundamentally leads to multitasking while processing video data. It is currently unknown what factors influence decision making in completing primary tasks or handling interruptions. In this study, we investigated the performance effects and the resulting design implications of varying the number of concurrent prospective memory tasks and encoding of one large group of …

A Theoretical Adaptive Autonomy Model: Real-Time Physiological Assessment Of Cognitive Workload, Dakota C. Evans

Browse all Theses and Dissertations

Increases in modern-day system complexity, has led for a need to improve human performance and the interaction between the two. Three objectives: (1) to investigate physiological measures as indicators of cognitive workload, (2) to assess cognitive workload during human interaction with different autonomy levels, and (3) to develop a theoretical model for an adaptive autonomous system that changes with real-time cognitive workload measures were addressed. This effort seeks to improve human computer interaction by providing the human with the acceptable level of computer automation based on real-time cognitive state. Two experiments involved collection of measures of subject physiology, subjective survey …

Bs News January/February

Building Services Engineering

No abstract provided.

Extrusion Printed Graphene/Polycaprolactone/ Composites For Tissue Engineering, Sepidar Sayyar, Rhys Cornock, Eoin Murray, Stephen Beirne, David L. Officer, Gordon G. Wallace

Australian Institute for Innovative Materials - Papers

In this work fibres and complex three-dimensional scaffolds of a covalently linked graphene-polycaprolactone composite were successfully extruded and printed using a melt extrusion printing system. Fibres with varying diameters and morphologies, as well as complex scaffolds were fabricated using an additive fabrication approach and were characterized. It was found that the addition of graphene improves the mechanical properties of the fibres by over 50% and in vitro cytotoxicity tests showed good biocompatibility indicating a promising material for tissue engineering applications.

The Future Of National And International Security On The Internet, Maurice Dawson, Marwan Omar, Jonathan Abramson, Dustin Bessette

Maurice Dawson

Hyperconnectivity is a growing trend that is driving cyber security experts to develop new security architectures for multiple platforms such as mobile devices, laptops, and even wearable displays. The futures of national and international security rely on complex countermeasures to ensure that a proper security posture is maintained during this state of hyperconnectivity. To protect these systems from exploitation of vulnerabilities it is essential to understand current and future threats to include the laws that drive their need to be secured. Examined within this chapter are the potential security-related threats with the use of social media, mobile devices, virtual worlds, …