Digital Commons Network^™

Skip The Grid: Solar System Installations In The Navajo Nation, Gina H. Chun

Construction Management

Skip the Grid is an interdisciplinary project that involves installing solar energy systems in the Navajo Nation. The project’s mission was to support the Navajo families, specifically the students that have limited access to light which directly affects their education. On March 26, 2023, a team of 20 California Polytechnic State University San Luis Obispo (Cal Poly) students, across eight different majors, travelled to Arizona to collaborate with the Red Mesa and Chinle Unified School Districts to install “off-grid” solar energy systems and lights. Through this project the Cal Poly students learned about the people of Navajo Nation, solar energy, …

A Generalized Machine Learning-Based Classifier Considering Cost-Effective Features For Automated Fault Detection And Diagnosis (Afdd) Of Packaged Rooftop Units, Md Rasel Uddin

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Packaged rooftop units (RTUs) are widely used for space conditioning in commercial buildings and manufacturing facilities. The typical soft faults related to RTUs degrade the system's performance in terms of cooling capacity, power consumption, and Coefficient of Performance (COP), detrimentally affecting both the equipment and energy consumption and the environment. Previous research in soft fault detection for rooftop units lacked classifier validation using lab and field data, developing a generalizable algorithm, and analyzing its performance across varying fault intensities.

Using a simulated data library for multiple rooftop units, this study proposes a machine-learning classifier with a reduced set of 9 …

Digital Twins Of The Living Knee: From Measurements To Model, Thor Erik Andreassen

Electronic Theses and Dissertations

Modern medicine has dramatically improved the lives of many. In orthopaedics, robotic surgery has given clinicians superior accuracy when performing interventions over conventional methods. Nevertheless, while these and many other methods are available to ensure treatments are performed successfully, far fewer methods exist to predict the proper treatment option for a given person. Clinicians are forced to categorize individuals, choosing the best treatment on “average.” However, many individuals differ significantly from the “average” person, for which many of these treatments are designed. Going forward, a method of testing, evaluating, and predicting different treatment options' short- and long-term effects on an …

Kinematic Analysis Of Gait And Deep Knee Flexion For Pre- And Post-Operative Total Knee Arthroplasty, Samantha Collins

Electronic Theses and Dissertations

Osteoarthritis (OA) is a form of arthritis that develops in the joint due to overuse and aging causing pain, discomfort, and disability. Total Knee Arthroplasty (TKA) is a surgical procedure performed when OA symptoms are severe with an estimated 600,000 patients in the United States currently receiving TKA. Studies have reported dissatisfaction of the knee for 14-39% of patients. This study collected knee kinematics before and after surgery using stereo radiography for precise measurement of gait and deep knee flexion activities. Results showed healthy knee kinematics were not restored and no significant changes could be seen from OA kinematics in …

Building Services Engineering September/October 2023

Building Services Engineering

No abstract provided.

Building Services Engineering November/December 2023

Building Services Engineering

No abstract provided.

Effect Of Blending Of Medium-Temperature Phase Change Material On The Bitumen Storage Heat, Loubna Najemi, Imane Belyamani, Mohsine Bouya

All Works

This study aims to investigate the feasibility of using D-Mannitol as a phase-change material (PCM) to increase the energy storage capacity and improve the thermomechanical characteristics of the modified bitumen. D-mannitol (Dm) was incorporated into Bitumen (Bm) using a high-speed shearing method. The results showed that the integration of PCM enhanced the physical characteristics of the basic bitumen, with the modified bitumen having a melting point close to that of D-mannitol (Tm = 164 °C). The D-mannitol was found to crystallize during cooling, indicating that it can store or release heat in the latent form. The specific heat capacity of …

Impact Of Silicon Ion Irradiation On Aluminum Nitride-Transduced Microelectromechanical Resonators, David D. Lynes, Joshua Young, Eric Lang, Hengky Chandrahalim

Faculty Publications

Microelectromechanical systems (MEMS) resonators use is widespread, from electronic filters and oscillators to physical sensors such as accelerometers and gyroscopes. These devices' ubiquity, small size, and low power consumption make them ideal for use in systems such as CubeSats, micro aerial vehicles, autonomous underwater vehicles, and micro-robots operating in radiation environments. Radiation's interaction with materials manifests as atomic displacement and ionization, resulting in mechanical and electronic property changes, photocurrents, and charge buildup. This study examines silicon (Si) ion irradiation's interaction with piezoelectrically transduced MEMS resonators. Furthermore, the effect of adding a dielectric silicon oxide (SiO₂) thin film is …

Integrating The Concept Of Complete Streets Into Pavement Preservation, Sirisha Gangireddy

LSU Master's Theses

This study is motivated by the evident gap in integrating Complete Streets principles into pavement preservation. Complete Streets opportunities, which aim to accommodate all road users, are typically encouraged in all kinds of projects including new construction, reconstruction, preservation, and rehabilitation. While the concept of Complete Streets is understood in terms of new construction (e.g., building sidewalks), its application through pavement preservation programs is not well-developed. To bridge the gap between the Complete Streets and pavement preservation, this study conducted a comprehensive review on how state Department of Transportation (DOTs) are currently incorporating Complete Streets into pavement preservation and identified …

The Santa Clara, 2023-10-31, Santa Clara University

The Santa Clara

No abstract provided.

Deep Learning-Based Automatic Stereology For High- And Low-Magnification Images, Hunter Morera

USF Tampa Graduate Theses and Dissertations

Quantification of the true number of stained cells in specific brain regions is an important metric in many fields of biomedical research involving cell degeneration, cytotoxicology, cellular inflammation, and drug development for a wide range of neurological disorders and mental illnesses. Unbiased stereology is the current state-of-the-art method for collecting the cell count data from tissue sections. These studies require trained experts to manually focus through a z-stack of microscopy images and count (click) on a hundred or more cells per case, making this approach time consuming (~1 hour per case) and prone to human error (i.e., inter-rater variability). Thus, …

Influence Of Explosive Maximum Instantaneous Charge On Blasting Environmental Impact, Olukemi Yetunde Odeyemi, Blessing Olamide Taiwo, Olarewaju Alaba

Journal of Sustainable Mining

Our research looked at the effect of explosive maximum instantaneous charge on ground vibrations and noise levels during blasting operations at the Calaba limestone quarry in Nigeria. Vibrock (V9000) seismograph was used to take readings related to ground vibrations and noise generated during all blasting operations that took place in the quarry for a period of one year. The results obtained indicate that the average ground vibration readings fall between 0.25mm/s to 3.6mm/s and the average noise decibel generated during the blasting operations between 35 to 158 dB. An artificial neural network (ANN) model is developed in this study for …

Spatio-Temporal Analysis Mapping Of Air Quality Monitoring In Cairo Using Sentinel-5 Satellite Data And Google Earth Engine, Sara Sameh, Fawzi Zarzoura, Mahmoud El-Mewafi

Mansoura Engineering Journal

Air pollutants including Nitrogen Dioxide (NO2), carbon monoxide (CO), and Sulphur dioxide (SO2) cause serious damage to human health and the environment. This research aims to assess built-up seasonal variations of air pollution maps over Cairo city in Egypt using remote sensing data. LST data was obtained from the MODIS Terra Satellite Data, specifically the MOD11A1 V6 product, from January to December 2022. The Sentinel-5 project utilizes the Tropospheric Monitoring Instrument (TROPOMI) sensor to capture images across different spectral bands, enabling precise monitoring of air pollution levels. The concentration data of NO2, CO, and SO2 were extracted from Sentinel-5P using …

Key Technology And Application Of Digital Twin Modeling For Mri, Shanshan Chen, Hongzhi Wang, Tian Xia

Journal of System Simulation

Abstract: With the accelerating digitalization in education, the construction of digital resources and application platforms has caught increasing attention. The framework of MRI equipment digital twin fivedimensional model is constructed to solve the problems in teaching and training for magnetic resonance imaging (MRI). A modeling and simulation method based on the mechanism model is proposed. The multi-dimensional physical data are obtained to perform digital human modeling, and the virtual acquisition and image reconstruction method is proposed to generate images. The digital twin data are adopted for iterative optimization to implement the whole process of the three-dimensional visual operation including preparation …

10.30.2023 Orsp Connect, Liz Williamson

ORED Newsletter

No abstract provided.

Executive Order On The Safe, Secure, And Trustworthy Development And Use Of Artificial Intelligence, Joseph R. Biden

Copyright, Fair Use, Scholarly Communication, etc.

Section 1. Purpose. Artificial intelligence (AI) holds extraordinary potential for both promise and peril. Responsible AI use has the potential to help solve urgent challenges while making our world more prosperous, productive, innovative, and secure. At the same time, irresponsible use could exacerbate societal harms such as fraud, discrimination, bias, and disinformation; displace and disempower workers; stifle competition; and pose risks to national security. Harnessing AI for good and realizing its myriad benefits requires mitigating its substantial risks. This endeavor demands a society-wide effort that includes government, the private sector, academia, and civil society.

My Administration places the highest urgency …

Multichannel Low-Cost Sensor For Iaq Monitoring: Implementation And Guidelines, Isaac Ntiamoah

LSU Master's Theses

Indoor air quality (IAQ) is adversely affected by both indoor and outdoor environments, and rental homes occupied by low-income families suffer the most. Poor indoor air can be detrimental to the health of occupants, especially for susceptible populations like those with respiratory diseases such as asthma. Although IAQ monitoring is necessary, it is a challenging, costly, and time-intensive task. Moreover, the protocol for assessing IAQ in residential settings varies, and additional research is needed to establish a standard operating procedure that incorporates new monitoring technologies, such as low-cost air sensors. However, there is a dearth of comprehensive, evidence-based protocols for …

A Critical Review Of Risk Matrices Used In Water Safety Planning: Improving Risk Matrix Construction, Kaycie Lane, Steve E. Hrudey

Department of Civil and Environmental Engineering: Faculty Publications

Risk matrices are used in water safety planning to prioritize improvements to drinking water systems. While water safety plans (WSPs) are promoted globally, no study has evaluated whether risk matrices are comprehensively constructed to accurately assess risk. We used risk matrix criteria adapted from previous risk matrix research to evaluate risk matrices found in twelve templates across global jurisdictions. WSP templates were found using the WSPortal website and definitions of likelihood and impact were extracted from each template to assist in the evaluation of WSP risk matrices. Application of the criteria developed from a detailed mathematical analysis by revealed that …

12th International Conference On Business, Technology And Innovation 2023, University For Business And Technology - Ubt

UBT International Conference

Welcome to IC – UBT 2023

UBT Annual International Conference is the 12th international interdisciplinary peer reviewed conference which publishes works of the scientists as well as practitioners in the area where UBT is active in Education, Research and Development. The UBT aims to implement an integrated strategy to establish itself as an internationally competitive, research-intensive university, committed to the transfer of knowledge and the provision of a world-class education to the most talented students from all background. The main perspective of the conference is to connect the scientists and practitioners from different disciplines in the same place and make …

International Conference On Civil Engineering And Infrastructure, University For Business And Technology - Ubt

UBT International Conference

UBT Annual International Conference is the 12th international interdisciplinary peer reviewed conference which publishes works of the scientists as well as practitioners in the area where UBT is active in Education, Research and Development. The UBT aims to implement an integrated strategy to establish itself as an internationally competitive, research-intensive university, committed to the transfer of knowledge and the provision of a world-class education to the most talented students from all background. The main perspective of the conference is to connect the scientists and practitioners from different disciplines in the same place and make them be aware of the recent …

Leaching Properties Of Fly Ash From Duvha Power Station In South Afric, Jabulani Veloso De Matsimbe, Megersa Melo De Dinka, David Caetano Olukanni, Innocent Oliveira Musonda

UBT International Conference

Fly ash and phosphogypsum are abundantly available in South Africa. However, landfilled industrial waste materials interact with the environment leading to groundwater, air, and soil pollution. This study aims to determine and quantify the heavy metal concentrations in fly ash from the Duvha power station and compare the results with US EPA regulatory limits. The TCLP and ICP-MS methods are used for leachate measurements. The results showed that the fly ash can be considered non-hazardous since the amounts of toxic elements such as Hg, Pb, Cu, Cd, Zn, Ni, As, P, Co, Se, and Mn are below the US EPA …

Advancing Toward Net-Zero Cities Through Solar Energy Integration - Challenges, Opportunities, And Innovation, Agron Bislimi, Blinera Bislimi

UBT International Conference

In the pursuit of sustainable urbanization, the integration of solar energy systems has emerged as a pivotal strategy. This paper delves into the transition toward net-zero cities by exploring the seamless integration of solar energy systems across the urban spectrum, extending from individual buildings to the broader urban environment. As cities strive for sustainability, the challenges, opportunities, and innovations associated with this integration are critical to shaping future urban landscapes. This study assesses the multifaceted journey of transitioning from conventional energy sources to solar-powered urban solutions, presenting a comprehensive overview of the challenges faced, the opportunities presented, and the innovative …

Assesment Of Bicycle Sharing Programs From A User Perspective: Kaybis, Hatice Göçmen Demir, Y .Kağan Demir, Anil Uruç

UBT International Conference

Bicycles are highly preferred as an efficient means of transportation today, particularly in terms of sustainability. There are currently over 1000 Bicycle Sharing Programs (BSPs) worldwide that are organized to promote the use of bicycles with individual or public transportation in an integrated manner. The first implemented BSP in Turkey is known as KAYBIS, and many other cities are also considering or planning similar programs. However, the availability of information and user statistics related to KAYBIS does not clearly indicate the level of adoption of BSP by users.

In this study, the factors influencing users' preferences for KAYBIS were determined …

International Conference On Energy, University For Business And Technology - Ubt

UBT International Conference

UBT Annual International Conference is the 12th international interdisciplinary peer reviewed conference which publishes works of the scientists as well as practitioners in the area where UBT is active in Education, Research and Development. The UBT aims to implement an integrated strategy to establish itself as an internationally competitive, research-intensive university, committed to the transfer of knowledge and the provision of a world-class education to the most talented students from all background. The main perspective of the conference is to connect the scientists and practitioners from different disciplines in the same place and make them be aware of the recent …

Energy Transition In Support Of Climate Conditions For Renewable Energy Sources, Vehbi Sofiu, Sami Gashi, Besar Veseli, Armend Ymeri, Muhaxherin Sofiu

UBT International Conference

The global perspective with its energy components offers an exploration of the advanced technological potential related to the benefits of the energy transition in renewable energy sources. The stability of the energy system integrated in pan-European markets with the concept of flexible and efficient generating capacities guarantees unified functionality of the energy system. The paper deals with the transition of the energy strategy with classical generation with an outdated system towards the path of reducing CO2 emissions with deep transformation of electricity generation with renewable energy sources. In this paper, the European directive related to the decarburizations of the generating …

Indoor Air Quality Impacts Into Life Cycle Assessments Of Buildings And Building, Afrim Syla

UBT International Conference

Human exposure to indoor pollutant concentrations is receiving in-creasing interest in Life Cycle Assessment (LCA). Products used during con-struction and operation of a building can contribute to Indoor Air Quality (IAQ) problems that affect occupants’ well-being. However, IAQ is conventionally not addressed in the life cycle assessments (LCAs) of buildings and building re-lated products even though IAQ leads to one of the areas of protection under LCA - human health impacts. In this study, we proposed an overall framework for integrating IAQ into LCA using the standard steps of LCA. The framework focused on IAQ and LCA modeling from two …

Smart Self - Learning Adaptive Modeling Buildings And Their Impact On Creation Of The Smart Cities In Kosovo, Challenges And Opportunities, Fuat Pallaska, Visar Hoxha

UBT International Conference

The scope of this study is to research or to find the tools for the modeling buildings and simulation on creating the models of smart houses and sustainability and their impact on the whole buildings systems and technologies for better and smarter living conditions for community. Increasing the Energy efficiency and improving the new capacity technologies for Building modeling systems and facilities should create the conditions for the Smart Cities tools and technology and this application in the practice, using the smart modeling systems such as (BIM - modeling) or others adaptive and self-learning buildings. Deepest analyzing Models used for …

The Indicators Of The Smartness To Assess Egypt's New Administrative Capital As A Smart City, Eman Metwally, Enas Samir, Marwa Ayman

Mansoura Engineering Journal

Smart cities have become a world-leading trend all over the globe, as they can induce an improved environment and a more acceptable quality of life. It is important to realize the main aspects of designing these cities and the variables affecting the extent of the smartness that the new cities can achieve. The indicators of achieving smartness vary from one country to another according to certain influential variables. So, to assess the extent of smartness that the New Administrative Capital “NAC” in Egypt had achieved, the research concluded a literature review for the concept of smart cities and the most …

Contemporary Landscape, Drivers And Developments In Engineering Education For Sustainability, Edmond Byrne

Plenary Presentations and Doctoral Symposium

The ‘landscape’ around sustainability education in engineering has continued to evolve. Engineering education for sustainability largely emerged originally out of environmental engineering imperatives, though more recent developments have considerably broadened the scope of ‘sustainability’ teaching in professional engineering programmes. This has implications for associated curriculum developments as well as having pedagogical implications. Principal drivers for these developments emanate from the evolving requirements of professional engineering bodies internationally. These drivers have been supported and supplemented by an enhanced sense of urgency in the wake of the impacts of an unsustainable societal construct (e.g. the consequences of accelerated climate change, biodiversity loss, …

A Study On Measures To Reduce Greenhouse Gases And Air Pollutants In Domestic Fishing Vessels, Jihong Kim

World Maritime University Dissertations

No abstract provided.