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Full-Text Articles in Civil Engineering

ปัจจัยที่ส่งผลต่อความตั้งใจเชิงพฤติกรรมในการเลือกใช้ยานยนต์รับส่งผู้โดยสารอัตโนมัติ (Autonomous Shuttle Pod) ในจุฬาลงกรณ์มหาวิทยาลัย, ยอดพล เพชราวุธ Jan 2023

ปัจจัยที่ส่งผลต่อความตั้งใจเชิงพฤติกรรมในการเลือกใช้ยานยนต์รับส่งผู้โดยสารอัตโนมัติ (Autonomous Shuttle Pod) ในจุฬาลงกรณ์มหาวิทยาลัย, ยอดพล เพชราวุธ

Chulalongkorn University Theses and Dissertations (Chula ETD)

ยานยนต์รับส่งผู้โดยสารอัตโนมัติ (Autonomous Shuttle Pod) ได้รับการออกแบบมาเพื่อตอบสนองความต้องการขนส่งรูปแบบใหม่ พร้อมทั้งเพิ่มประสิทธิภาพและความปลอดภัยในการเดินทาง อย่างไรก็ตามความสำเร็จของเทคโนโลยีนี้ขึ้นอยู่กับการยอมรับของสาธารณชน การศึกษานี้มุ่งเน้นไปที่การตรวจสอบทัศนคติและปัจจัยที่ส่งผลต่อความตั้งใจเชิงพฤติกรรมในการเลือกใช้ยานยนต์รับส่งผู้โดยสารอัตโนมัติ โดยขยายแบบจำลองทฤษฎีรวมการยอมรับและการใช้เทคโนโลยี 2 (UTAUT2) ที่เพิ่มปัจจัยด้าน การรับรู้ด้านความเสี่ยง, การรับรู้ด้านความไว้วางใจ, ภาพลักษณ์ และการเปรียบเทียบกับรูปแบบการเดินทางอื่น โดยสร้างแบบจำลองสมการเชิงโครงสร้าง (SEM) เพื่อหาความสัมพันธ์ระหว่างปัจจัยและเจตนาเชิงพฤติกรรมภายใต้แบบจำลอง อย่างไรก็ตามการวิจัยนี้ได้วิเคราะห์องค์ประกอบเชิงสำรวจ (EFA) เพื่อค้นหาองค์ประกอบที่แท้จริงภายใต้ตัวบ่งชี้ที่พัฒนาขึ้น แบบสอบถามดำเนินกับกลุ่มตัวอย่างในพื้นที่จุฬาลงกรณ์มหาวิทยาลัยจำนวน 409 คน ผลการศึกษาทัศนคติพบว่า คนชื่นชอบยานยนต์รับส่งผู้โดยสารอัตโนมัติในด้านของการบริการ ได้แก่ การเรียกใช้ได้ทุกที่ทุกเวลาผ่านแอพพลิเคชั่น, บริการนอกเวลาปกติ และการปรับเปลี่ยนเส้นทาง อีกทั้งยังถูกมองว่ามีศักยภาพในการเข้ามาแทนที่รถ Pop Bus และ Muvmi สำหรับการวิเคราะห์แบบจำลองสมการเชิงโครงสร้าง (SEM) พบว่าปัจจัยที่ส่งผลต่อการเลือกใช้ยานยนต์รับส่งผู้โดยสารอัตโนมัติของผู้คน ได้แก่ ความคาดหวังด้านประสิทธิภาพ, ประโยชน์ในการใช้ในชีวิตประจำวัน, การรับรู้ด้านความไว้วางใจ, สิ่งอำนวยความสะดวก, ความพอใจในบริการเหนือราคา, ความไว้วางใจด้านบริการและราคา, การรับรู้ความเสี่ยง และการรับรู้ว่าใช้งานได้ง่าย ในขณะที่ความคาดหวังด้านความพยายาม และ อิทธิพลของสังคม ส่งผลในทางอ้อม

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การวิเคราะห์มลพิษทางอากาศและเสียงที่เกิดจากกิจกรรมย่อยของการก่อสร้างที่พักอาศัยโดยเครื่องมือวัดส่วนบุคคลร่วมกับบันทึกวีดีโอ, นพวิชญ์ ลีลานภากาศ Jan 2023

การวิเคราะห์มลพิษทางอากาศและเสียงที่เกิดจากกิจกรรมย่อยของการก่อสร้างที่พักอาศัยโดยเครื่องมือวัดส่วนบุคคลร่วมกับบันทึกวีดีโอ, นพวิชญ์ ลีลานภากาศ

Chulalongkorn University Theses and Dissertations (Chula ETD)

เนื่องมาจากการก่อสร้างที่พักอาศัยที่มีอยู่ทั่วพื้นที่กรุงเทพฯ และปริมณฑลซึ่งเป็นต้นเหตุของมลพิษทางอากาศและเสียง โดยผู้ที่ได้รับผลกระทบมากที่สุดคือ แรงงานก่อสร้าง งานวิจัยนี้จึงต้องการวิเคราะห์มลพิษทางอากาศและเสียง (PM 2.5, PM 10, NO2, CO, dB(A)) ที่เกิดจากกิจกรรมย่อยของการก่อสร้างที่พักอาศัยโดยเครื่องมือวัดส่วนบุคคลร่วมกับบันทึกวีดีโอ ซึ่งนำเทคโนโลยี IoT (Internet of Things) เซนเซอร์ตรวจวัดมลพิษทางอากาศและเสียง และกล้องบันทึกวีดีโอมาประยุกต์ใช้ ทำให้ทราบค่าความเข้มข้นของมลพิษที่แรงงานได้รับจากกิจกรรมย่อยของงานก่อสร้าง การตรวจวัดมลพิษทางอากาศและเสียงโดยทั่วไปวัดจากค่าเฉลี่ยของปริมาณมลพิษที่แรงงานได้รับตลอดช่วงเวลาทำงาน อีกทั้งเครื่องมือวัดมีขนาดใหญ่ มีราคาสูง และไม่สามารถทราบถึงกิจกรรมย่อยที่ก่อให้เกิดมลพิษต่อแรงงาน ดังนั้นงานวิจัยนี้ได้ติดเครื่องมือวัดและกล้องบันทึกวีดีโอกับแรงงาน เพื่อให้ทราบถึงปริมาณมลพิษที่แรงงานได้รับจากกิจกรรมย่อยของการก่อสร้าง โดยเมื่อมีปริมาณมลพิษเกินค่ามาตรฐานจะมีการแจ้งเตือนไปยัง Line Notify เพื่อให้เจ้าหน้าที่ความปลอดภัยโครงการได้ทราบถึงปริมาณมลพิษที่เกิดขึ้นในขณะนั้น หลังจากนั้นประยุกต์ใช้เครื่องมือตรวจวัดมลพิษทางอากาศและเสียงกับโครงการก่อสร้างกรณีศึกษา 4 โครงการ ผลการทดสอบพบว่า กิจกรรมย่อยที่เกิดมลพิษมากที่สุด คือ เชื่อมโลหะโดยใช้ลวดเชื่อม มีปริมาณฝุ่นละออง PM 2.5 และ PM 10 เกินค่ามาตรฐานอยู่ในระดับส่งผลกระทบต่อสุขภาพ ปริมาณก๊าซคาร์บอนมอนอกไซด์และไนโตรเจนไดออกไซด์ เกินค่ามาตรฐานอยู่ในระดับเริ่มส่งผลกระทบต่อสุขภาพ อย่างไรก็ตามเครื่องมือยังมีข้อจำกัดในเรื่องขีดจำกัดต่ำสุดและสูงสุดของเซนเซอร์ที่สามารถตรวจวัดมลพิษได้

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Feasibility Of Applying Motion Magnification In Subsurface Defect Detection For Concrete And Fiber-Reinforced Polymer Specimens, Nagavardhani Malineni Jan 2023

Feasibility Of Applying Motion Magnification In Subsurface Defect Detection For Concrete And Fiber-Reinforced Polymer Specimens, Nagavardhani Malineni

Graduate Theses, Dissertations, and Problem Reports (ETD)

Irrespective of size and complexity, every civil infrastructure needs certain scrutiny regarding its structural health to ensure its serviceability during its lifetime. In olden times such scrutiny was done with the aid of destructive testing methods using sensors that required cumbersome and expensive installations and led to the destruction of at least part of the tested specimen. However, in recent times, many non-destructive methods, such as acoustic emission testing, electromagnetic testing, and laser testing methods have emerged, leaving the specified tested specimen undisturbed. With the advancement in sensor technology like motion magnification and with the help of access to high-speed …

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Environmental Controls Of Greenhouse Fluxes In Freshwater Wetlands Across The Globe, Samira Jahan Jan 2023

Environmental Controls Of Greenhouse Fluxes In Freshwater Wetlands Across The Globe, Samira Jahan

Graduate Theses, Dissertations, and Problem Reports (ETD)

Freshwater wetlands can contribute significantly to the global carbon budget as a net source or sink of the major greenhouse gas (GHG) fluxes such as carbon dioxide (FCO2) and methane (FCH4). The amount of GHG fluxes in the freshwater wetlands is highly variable and depends on a range of environmental drivers. These wetlands are commonly hypothesized to be net sinks (i.e., burial) of FCO2 and net sources (emission) of FCH4 at the monthly to annual scales. Understanding the environmental controls on the wetland GHG fluxes is essential for an accurate estimation of the global …

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Strengthening Of Damaged Structural Members With External Frp, Krishna Tulasi Gadde Jan 2023

Strengthening Of Damaged Structural Members With External Frp, Krishna Tulasi Gadde

Graduate Theses, Dissertations, and Problem Reports (ETD)

Fiber reinforced polymer (FRP) composites are excellent alternatives to traditional materials for civil infrastructure. Several researchers have worked on the application of FRP composites for construction, repair, and rehabilitation of structures. This research aims at evaluating the use of carbon, glass, basalt, and hybrid FRPs with epoxy and polyurethane resin systems for rehabilitation of damaged structural components. Following evaluations were carried out in this research: (i) tension testing of FRP coupons, (ii) compression testing of concrete cylinders with and without damaged sections/FRP reinforcements, (iii) flexural testing of external-FRP reinforced RC beams with and without damages, (iv) pull-off tests on FRP …

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Visual Sensing For Comprehensive Granular Traffic Data Collection In Support Of Intelligent Transportation Applications, Linjun Lu Jan 2023

Visual Sensing For Comprehensive Granular Traffic Data Collection In Support Of Intelligent Transportation Applications, Linjun Lu

Graduate Theses, Dissertations, and Problem Reports (ETD)

Comprehensive granular traffic data collection has been identified as one of the most essential tasks in the development of intelligent transportation systems (ITS). With the recent advances in electro-optical sensors and computational capacities, machine vision is regarded as cost-efficient for traffic data collection. However, the existing vision-based methods are only applicable for collecting limited types of traffic data, and a unified method allowing for comprehensive traffic data collection is still missing in the existing literature. Moreover, there are still challenges that exist for the use of the existing vision-based methods in real settings, including low accuracy and compromised applicability due …

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Powering Electric Vehicles: Are We Ready?, Christian Yoder Jan 2023

Powering Electric Vehicles: Are We Ready?, Christian Yoder

Williams Honors College, Honors Research Projects

This project will investigate typical power grids and the impacts that electric vehicles have on them. Electric vehicles are rapidly growing in popularity and much of the world is promising to make the switch from combustion engines to EVs. Electric vehicles demand a large amount of electricity. With fast charging becoming available, it is worth asking if the current electrical infrastructure can handle the increase in demand. After talking to a source at FirstEnergy, it seems large electric companies are well aware of areas in need of adjustment and are moving accordingly.

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Cost-Benefit Analysis Of Increased Water Treatment Plant Service Goals On Reducing Water Quality Risk, Briton Polen, Kendra Sanner Jan 2023

Cost-Benefit Analysis Of Increased Water Treatment Plant Service Goals On Reducing Water Quality Risk, Briton Polen, Kendra Sanner

Williams Honors College, Honors Research Projects

To treat water to make it safe to drink, disinfection processes are used in water treatment plants. These disinfection processes produce disinfection byproducts (DBPs) through the reaction of organic matter and the disinfectant, such as chlorine. DBPs have been shown to pose a cancer risk to consumers. In this report, the focus is on two types of DBPs, trihalomethanes (THMs) and haloacetic acids (HAAs). The cancer risks associated with DBPs are analyzed through ingestion and inhalation pathways. Ingestion and inhalation consist of common water uses like drinking, cooking, or bathing. In addition to this, DBPs have been shown to increase …

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Quantifying Geogrid Reinforcement Mechanism In Roadway Performance Using Cyclic Plate Load (Cpl) Test, G.S. Ellithy, A. Crippa Jan 2023

Quantifying Geogrid Reinforcement Mechanism In Roadway Performance Using Cyclic Plate Load (Cpl) Test, G.S. Ellithy, A. Crippa

Publications

For decades, geogrids have been used successfully to improve performance in both paved and unpaved roadway construction. Even though the current state of practice differentiates between the design methodology incorporating geogrids in paved and unpaved roadways, the true improvement contribution of geogrids is to the base layer, or to the layer that is placed directly on top of it. It has been established that the three reinforcement mechanisms by which geogrids enhance roadway performance are: lateral restraint, bearing capacity increase and membrane tension support. In order to quantify these mechanisms and their contribution to the roadway performance improvement, two Cyclic …

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Does The Ite Trip Generation Manual Overestimate The Trip Generation Of Stores In Northeast Ohio?, Shawn Monahan Jan 2023

Does The Ite Trip Generation Manual Overestimate The Trip Generation Of Stores In Northeast Ohio?, Shawn Monahan

Williams Honors College, Honors Research Projects

This project will examine the use of the Trip Generation Manual to estimate the number of 'trips' per average weekday. A trip is defined as a vehicular movement from one location to another. The Trip Generation Manual will examine the estimated number of trips generated for local discount superstores in the Northeast Region of Ohio. Surveys were completed for local data, supplemented with a vehicle occupancy rate sample. This will provide a baseline that the Trip Generation Manual will be compared to.

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An Analysis Of The Influence Of Speed On Fatal Accidents In Ohio, Megan Johnson Jan 2023

An Analysis Of The Influence Of Speed On Fatal Accidents In Ohio, Megan Johnson

Williams Honors College, Honors Research Projects

Through data collected by NHTSA and FARS, Ohio crash data resulting in fatalities were analyzed through four different breakdowns to determine variables correlating to the fatalities. The breakdowns include dividing data from overall Ohio data, reports involving speeding, then from there to single-vehicle crashes. That data was divided down to only include male drivers and then finally only motorcycles. This data was analyzed as it was broken down to find trends with each category. Through these analyses, the trends were developed to suggest recommendations to implement through education and laws to help reduce the number of crashes resulting in fatalities.

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Analysis Of Underwater Noise Due To Pile Driving In Florida Using Individual Hammer Blows, Consolatha Constantine Mushi Jan 2023

Analysis Of Underwater Noise Due To Pile Driving In Florida Using Individual Hammer Blows, Consolatha Constantine Mushi

UNF Graduate Theses and Dissertations

In recent years, the potential impact on marine organisms of sound waves generated by pile driving has become a growing concern. Previous research in this field has predominantly relied upon single-strike averages to analyze underwater sound data. However, it was unclear from these analyses if or how much attenuation may vary during typical pile drives. This study involved collecting sound data from multiple locations during a given pile driving operation at the same time and used these data to analyze sound decay from each hammer blow individually. In addition to this, computational fluid dynamics (CFD) was used to better understand …

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Nondestructive Evaluation Of Structural Defects In Concrete Slabs, Ehsanul Kabir Jan 2023

Nondestructive Evaluation Of Structural Defects In Concrete Slabs, Ehsanul Kabir

College of Graduate Studies: Theses & Dissertations

Nondestructive testing (NDT) is a reliable method for determining the structural integrity of new and old construction and understanding the condition of structural defects. It is widely acknowledged that the interpretation of nondestructive evaluation (NDE) has a significant impact on the reliability and consistency of this technology. However, NDT data acquisition remains subjective and heavily dependent on the operator’s knowledge and expertise. As a result, there are still issues to be resolved regarding the imaging and diagnostic procedures for NDT-based concrete inspection. NDT methods such as ground penetrating radar (GPR), and impact-echo (IE), have been extensively used to inspect concrete …

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The Seasonality And Climate Predictability Of The Frequency Of Extreme Flood Events Across The Contiguous United States, Ololade S. Alonge Jan 2023

The Seasonality And Climate Predictability Of The Frequency Of Extreme Flood Events Across The Contiguous United States, Ololade S. Alonge

Dissertations and Theses

This paper investigates the seasonality of the frequency of extreme flood events across the United States (US) and outlines the impact of large-scale climate on its spatio-temporal variability. The analysis was conducted on 317 stream gages from the United States Geological Survey (USGS) Hydro-Climatic Data Network (HDCN) over a period of 68 years (1950-2017), resulting in the estimation of the counts of extreme floods (defined as the number of days in each month when the streamflow is greater than the 95th percentile of daily distribution) and the determination of the Markham’s seasonality index for it. 97% of the stations …

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Designing Exterior Lighting For Safety And Comfort While Minimizing Light Pollution, Energy Consumption, And Cost, Stephen Michael Simmons Jan 2023

Designing Exterior Lighting For Safety And Comfort While Minimizing Light Pollution, Energy Consumption, And Cost, Stephen Michael Simmons

Masters Theses

"Artificial light at night brings many benefits to society. However, these benefits do not come without costs. One environmental issue that is often overlooked in the design of public spaces and infrastructure is light pollution. At the expense of large amounts of energy, light pollution causes numerous harmful effects on human health, ecosystems, and the night sky. Today, the problem is becoming more widespread, especially with the increasing use of bright, white LED luminaires. Thus, it is imperative for designers and engineers to create smarter lighting designs that not only allow for safety and comfort at night but also promote …

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Selecting Consolidation Procedures For Making Concrete Specimens, Paige Marie Toebben Jan 2023

Selecting Consolidation Procedures For Making Concrete Specimens, Paige Marie Toebben

Masters Theses

"The goal of this research was to reevaluate ASTM C31 Standard Practice for Making and Curing Concrete Test Specimens in the Field, as well as deepen our understanding of the relationship between the consolidation process, concrete composition, and workability. An improved understanding of this area will help to reduce variability in concrete quality. The project involved evaluating the effect of different consolidation methods on concrete specimens with changing levels of workability. To do this, concrete cylinders were created with varying viscosities by adjusting the water-to-cement ratio (w/c) and water-reducing agent. More cylinders were created with varying paste volumes while keeping …

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Multiscale Evaluation Of The Effect Of Deicing Agents And Environmental Conditions On The Performance Of Asphalt Pavements In Cold Regions, Maryam Mihandoust Jan 2023

Multiscale Evaluation Of The Effect Of Deicing Agents And Environmental Conditions On The Performance Of Asphalt Pavements In Cold Regions, Maryam Mihandoust

Electronic Theses and Dissertations

No abstract provided.

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Electronic Waste As Synthetic Aggregate For Portland Cement Concrete, Md Shafaul Islam Jan 2023

Electronic Waste As Synthetic Aggregate For Portland Cement Concrete, Md Shafaul Islam

Electronic Theses and Dissertations

Lightweight concrete has grown in popularity in the building industry in recent years. Due to its environmental and economic benefits, the construction sector favors using lightweight concrete in applications allowed by the technical specifications. On the other hand, electronics waste (e-waste) is the world’s most rapidly growing waste problem. Given the scale and the volume of global concrete construction, incorporating e-waste as a lightweight concrete construction material can potentially reduce sending electronic waste to landfills, which is an environmental benefit. Additionally, it will help with saving the consumption of virgin aggregates. This study was undertaken to determine the feasibility of …

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An Analysis Of The Effect Of Temperature On Asphalt Paving In South Dakota, S M Rahat Rashedi Jan 2023

An Analysis Of The Effect Of Temperature On Asphalt Paving In South Dakota, S M Rahat Rashedi

Electronic Theses and Dissertations

Temperature is an important parameter to consider for asphalt paving since this work is generally susceptible to weather due to outdoor construction. The South Dakota Department of Transportation (SDDOT) developed working day weather charts in 1998 to address the expected adverse weather days. This thesis investigated the effect of temperature on adverse weather days for asphalt paving and compared them to the value reported in the 1998 SDDOT study. Moreover, the thesis also examined how closely the maximum temperature data from project sites' weekly progress reports (WPR) matched the data from the closest weather stations. When the maximum temperature (TMAX) …

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How Can Visual Programing Be Used To Aid The Development Of A Structural Scheme Design Process Utilising Geometric Data Within An Architectural Revit Model?, Ed Carthy, Kieran Lakhera O'Shea Jan 2023

How Can Visual Programing Be Used To Aid The Development Of A Structural Scheme Design Process Utilising Geometric Data Within An Architectural Revit Model?, Ed Carthy, Kieran Lakhera O'Shea

Reports

The early-stage structural scheme design of a building is a complex task requiring the collection of multiple information categories such as geometry, loading and materials. The collection and review of this information is traditionally conducted in a 2D environment. This is inefficient, time-consuming, and tedious. This paper provides a review of how structural engineers’ understanding and implementation of BIM has evolved significantly in recent years, validated by extant literature in areas such as BIM automation, visual programming, and structural optimisation in the structural engineering sector. Structural engineers are growing more aware that BIM provides a vast repository of data to …

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Editorial: Nanoscale Insight Into The Hydration Products Of Cementitious Materials: From Theory To Engineering, Huiwen Sun, Muhan Wang, Hongyan Ma, Xiao Wang, Bo Pang Jan 2023

Editorial: Nanoscale Insight Into The Hydration Products Of Cementitious Materials: From Theory To Engineering, Huiwen Sun, Muhan Wang, Hongyan Ma, Xiao Wang, Bo Pang

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.

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Data Driven Method To Assess Safety And Energy On Freeway And Intersection Performance Using Probe Vehicle, Rezwana Kabir Jan 2023

Data Driven Method To Assess Safety And Energy On Freeway And Intersection Performance Using Probe Vehicle, Rezwana Kabir

Wayne State University Dissertations

Traffic congestion in cities is becoming a more pressing issue as travel demand increases, leading to safety and mobility problems and wasteful use of vehicle energy. Both freeways and signalized corridors are important in creating an efficient transportation network, and congestion on these infrastructure types presents a significant mobility concern in the United States. With advances in sensing technologies for intelligent transportation systems, probe vehicles equipped with GPS-enabled devices such as cell phones and in-vehicle telematics or navigation systems are increasingly being used to gather more information about traffic conditions. While fixed point detectors can be limited by their geographical …

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Privately-Owned Versus Shared Automated Vehicle: The Roles Of Utilitarian And Hedonic Beliefs, Fatemeh Nazari, Yellitza Soto, Mohamadhossein Noruzoliaee Jan 2023

Privately-Owned Versus Shared Automated Vehicle: The Roles Of Utilitarian And Hedonic Beliefs, Fatemeh Nazari, Yellitza Soto, Mohamadhossein Noruzoliaee

Civil Engineering Faculty Publications

Transportation systems will be likely transformed by the emergence of automated vehicles (AVs) promising for safe, convenient, and efficient mobility, especially if used in shared systems (shared AV or SAV). However, the potential tendency is observed towards owning AV as a private asset rather than using SAV. This calls for a research on investigating individuals’ attitude towards AV in comparison with SAV to recognize the barriers to the public’s tendency towards SAV. To do so, the present study proposes a modeling framework based on the theories in behavioral psychology to explain individuals’ preference for owning AV over using SAV, built …

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Finite Element Analysis Of Compaction Load To Investigate The Stress-Deformation Behavior Of Soil Geosynthetic Composite Mass: A Case Study, Truc Phan, Meen-Wah Gui, Thang Pham Jan 2023

Finite Element Analysis Of Compaction Load To Investigate The Stress-Deformation Behavior Of Soil Geosynthetic Composite Mass: A Case Study, Truc Phan, Meen-Wah Gui, Thang Pham

Civil Engineering Faculty Publications

When building Soil Geosynthetic Composite (SGC) walls, fill compaction is normally carried out by operating a compactor in a general direction parallel to the wall face. In other words, a moving point or area load is often used to apply a compaction load on a newly installed soil lift. Pham (2009) and Wu and Pham (2010) demonstrated that the compaction-induced stress (CIS) caused by multiple passes of a compactor moving toward or away from a section can be calculated by taking into account the compaction load applied directly above the section under consideration using a simplified stress path proposed by …

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Hdd Dataset: Optimising Retrofitted Insulation For Irish Residential Building Walls, Rakshit D. Muddu, Aimee Byrne, Anthony James Robinson Jan 2023

Hdd Dataset: Optimising Retrofitted Insulation For Irish Residential Building Walls, Rakshit D. Muddu, Aimee Byrne, Anthony James Robinson

Datasets

In this study, a thermal-economic analysis was conducted to determine the optimum insulation thickness of retrofitted insulation walls in different regions in Ireland. This was based on the Heating Degree Day method (HDD). This dataset contains optimum insulation thickness, payback period, cost savings and carbon emission for all 25 counties in the Republic of Ireland

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Uses Of Geographic Information Systems And Remote Sensing To Study The Natural Resource Management Of The Red Sea Governorate, Egypt, Shrouk Galal, Fawzi Hamid Zarzoura, Mahmoud El-Mewafi Jan 2023

Uses Of Geographic Information Systems And Remote Sensing To Study The Natural Resource Management Of The Red Sea Governorate, Egypt, Shrouk Galal, Fawzi Hamid Zarzoura, Mahmoud El-Mewafi

Mansoura Engineering Journal

The Red Sea governorate is rich in natural resources that create challenges for Egypt's future economy and growth. The right ways must be found to manage and discover these resources without wasting them. Remote sensing is one of the best methods used in the development of natural resources. It is based on measuring electromagnetic ray reflections from deep-seated or dispersed natural resources, and these images are processed uniquely for a variety of applications, including the detection of minerals, making land cover maps, shifting rocks, and monitoring of geological distortions. The altered rocks that existed in the study area were identified …

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Accessing The Relative Sustainability Of Point-Of-Use Water Disinfection Technologies Through Costs And Environmental Impacts, Bright C. Elijah Jan 2023

Accessing The Relative Sustainability Of Point-Of-Use Water Disinfection Technologies Through Costs And Environmental Impacts, Bright C. Elijah

College of Graduate Studies: Theses & Dissertations

According to the World Health Organization, 785 million people lack access to basic drinking water facilities, and 144 million people rely on surface water which is prone to microbial contamination. Point-of-use (POU) water disinfection technologies can be adopted to help address these issues by treating water at the household level; however, navigating various POU disinfection technologies for a given water source or location can be difficult. While numerous conventional POU technologies exist (e.g., boiling water, POU chlorination), new emerging POU technologies (e.g., using novel materials or advanced processes) have been coined by developers to be lower cost with higher treatment …

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Predictions Of The Dynamic Complex Modulus Of Non-Conventional Asphalt Concrete Using Machine Learning Techniques, Annie Benson Jan 2023

Predictions Of The Dynamic Complex Modulus Of Non-Conventional Asphalt Concrete Using Machine Learning Techniques, Annie Benson

College of Graduate Studies: Theses & Dissertations

The complex dynamic modulus (|E*|) is a characterization property that defines the stiffness of an asphalt mixture. The dynamic modulus can be found through lab testing or predictions. Since lab testing can be time-consuming and expensive, the prediction method can be used as an alternative method. While a statistical method has been traditionally used for the |E*| prediction such as the Witczak’s predictive equations, machine learning (ML) is recently emerging as an alternative way that |E*| predictions can be made. This research attempted to predict the |E*| using several ML techniques including linear regression, support vector machines (SVM), decision trees, …

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Implementation Of Ground Penetrating Radar (Gpr) And Complementary Non-Destructive Testing On Concrete Structures, Macy Spears Jan 2023

Implementation Of Ground Penetrating Radar (Gpr) And Complementary Non-Destructive Testing On Concrete Structures, Macy Spears

College of Graduate Studies: Theses & Dissertations

This study analyzes the application and practicality of different non-destructive testing (NDT) methods for the inspection of reinforced concrete. There are two studies discussed in this paper. The first one is a laboratory investigation, utilizing ground penetrating radar (GPR) on concrete slabs that consisted of simulated defects to mimic those found in real concrete structures. This served as a preliminary experiment to verify the GPR data with the design of the slabs. The following study describes a field investigation on an old bridge deck, which involved multiple testing methods. The techniques used were GPR, impact echo (IE), ultrasonic pulse echo …

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Concentrated Wastewater Treatment Using A Ferric Iron-Dosed Anaerobic Upflow Sludge Blanket Reactor For Recovery Of Phosphorus And Ammonium, Carley E. Shingleton Jan 2023

Concentrated Wastewater Treatment Using A Ferric Iron-Dosed Anaerobic Upflow Sludge Blanket Reactor For Recovery Of Phosphorus And Ammonium, Carley E. Shingleton

Graduate Theses, Dissertations, and Problem Reports (ETD)

This study evaluated the performance of a novel, ferric iron-dosed anaerobic bioreactor to recover two separate nutrient products from concentrated wastewaters -- phosphorus as vivianite (Fe3(PO4)2×8H2O) and an ammonium-containing effluent with low organics. A bench-scale upflow anaerobic sludge blanket (UASB) reactor fed with a synthetic wastewater (458.0 mg/L total organic carbon, 282.7 mg/L ammonium, and 84.4 mg/L phosphate) was dosed with a ferric chloride solution at an org. C/Fe3+ molar ratio ~17.5 to facilitate organic carbon oxidation coupled to iron reduction. The reactor design allowed natural settling of vivianite to its …

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