Spatio-Heterogeneity Risk Assessment From Microplastic Contaminations In Water And Sediment Of The Inner Gulf Of Thailand,
2024
Faculty of Science
Spatio-Heterogeneity Risk Assessment From Microplastic Contaminations In Water And Sediment Of The Inner Gulf Of Thailand, Sarayut Suanluang
Chulalongkorn University Theses and Dissertations (Chula ETD)
The inner Gulf of Thailand, a shallow semi-enclosed marine basin, plays a vital economic and ecological role for Thailand, yet faces increasing threats from microplastic (MP) pollution driven by urbanization, industrial and agriculture developments, and riverine discharges. This study aimed to assess the spatial and vertical distributions, polymer characteristics, and ecological risks associated with MP contamination in water columns and surface sediments throughout the inner Gulf. Sampling was conducted at 13 stations, with water collected from surface, mid-depth, and bottom layers, and sediment samples taken from corresponding surface sediments. MPs were analyzed for abundance, size, shape, color, and polymer composition …
Stakeholder Information Interdependence Mapping For Area-Business Continuity Management: A Case Study Of Flood In Industrial Areas In Thailand,
2024
Graduate School
Stakeholder Information Interdependence Mapping For Area-Business Continuity Management: A Case Study Of Flood In Industrial Areas In Thailand, Penpitcha Arayachookiat
Chulalongkorn University Theses and Dissertations (Chula ETD)
The great flood of 2011 in Thailand significantly disrupted supply chains and caused substantial economic damage. The concept of Area-Business Continuity Management (Area-BCM) was developed. This concept aims to enable vulnerable areas to maintain operations during crises. This research focuses on understanding the information interdependence among stakeholders involved in Area-BCM. Its objective is to develop an information interdependence map for Area-BCM, using a case study of flood events in three industrial areas in Phra Nakhon Si Ayutthaya Province. The study employed a qualitative research approach, collecting and analyzing data through in-depth interviews with various stakeholders. The data analyzed was then …
Development Of A Forest Fire Detection Device Based On Agent-Based Simulation,
2024
Graduate School
Development Of A Forest Fire Detection Device Based On Agent-Based Simulation, Teerapat Tappanom
Chulalongkorn University Theses and Dissertations (Chula ETD)
This study had three main objectives: to identify the factors influencing forest fire spread, to design and develop a forest fire spread model, and to design and develop a forest fire detection device. The researcher utilized scatter plots, correlation analysis, and multiple linear regression analysis based on climatic data collected from the Chiang Mai Meteorological Station between 1998 and 2021 to investigate the parameters affecting fire spread. A forest fire spread model was developed using an Agent-Based Model (ABM) in AnyLogic 8.8.3 Personal Learning Edition to estimate the burned area under different scenarios with wind directions set to the north …
Improving Risk Governance Strategies Via Learning: A Comparative Analysis Of Solar Radiation Modification And Gene Drives,
2024
Duke Law School
Improving Risk Governance Strategies Via Learning: A Comparative Analysis Of Solar Radiation Modification And Gene Drives, Khara Grieger, Jonathan B. Wiener, Jennifer Kuzma
Faculty Scholarship
Stratospheric aerosol injection (SAI) and gene drive organisms (GDOs) have been proposed as technological responses to complex entrenched environmental challenges. They also share several characteristics of emerging risks, including extensive uncertainties, systemic interdependencies, and risk profiles intertwined with societal contexts. This Perspective conducts a comparative analysis of the two technologies, and identifies ways in which their research and policy communities may learn from each other to inform future risk governance strategies. We find that SAI and GDOs share common features of aiming to improve or restore a public good, are characterized by numerous potential ecological, societal, and ethical risks associated …
Embedding Software Engineering In Mixed Methods: Computationally Enhanced Risk Communication,
2024
Montana State University
Embedding Software Engineering In Mixed Methods: Computationally Enhanced Risk Communication, Ann Marie Reinhold, Madison H. Munro, Elizabeth A. Shanahan, Ross J. Gore, Barry C. Ezell, Clemente I. Izurieta
VMASC Publications
Mixed methods research ameliorates many convergent research challenges within the contemporary sociotechnical landscape. We suggest the integration of software engineering in mixed methods studies is a critical step to address some of the remaining and persistent challenges. One such research challenge where software engineering is particularly well suited is in hazard preparedness—in particular, the creation of risk communication messages to mitigate or prevent harm. Computationally enhanced risk communication is convergent research that integrates software engineering and social science research for the benefit of protecting humans and infrastructure. To this end, we developed a mixed methods framework for the efficient construction …
Health Impact Assessment From Fine Particulate Matter Pm10 And Pm2.5 In Thailand,
2024
Faculty of Science
Health Impact Assessment From Fine Particulate Matter Pm10 And Pm2.5 In Thailand, Phawichsak Prapassornpitaya
Chulalongkorn University Theses and Dissertations (Chula ETD)
The rapid urbanization and industrial sector have caused significant air quality problems. In particular, the concentration of fine particulate matter (PM10,PM2.5) is an assessment of the impact of fine particulate matter. Health The main objective of this study was to compare PM10 and PM2.5 levels and temporal trends from 2015 to 2019, and to develop a model to forecast particulate matter concentrations using multiple linear regression analysis. Multiple Linear Regression (MLR) to assess the association between particulate matter exposure and daily hospital visit for respiratory diseases. (ICD-10: J00-J99) and identify vulnerable populations. In the research, PM10 and PM2.5 air quality …
A Decision-Making Approach To Reduce The Risk Of Measurement Uncertainty For Product Size,
2024
Production and Mechanical Design Engineering Dept., Faculty of Engineering, Mansoura University, 35516 Mansoura, Egypt
A Decision-Making Approach To Reduce The Risk Of Measurement Uncertainty For Product Size, Mostafa Awadalla Sedeek, Fatma Abdallah Elerian, Ossama Badie Abouelatta, Mona. A. Aboueleaz
Mansoura Engineering Journal
The measurement uncertainty has a significant impact on quality control processes. This is particularly true of standards that are assessed to determine if a product is compliant. This ambiguity introduces two potential risks of decision-making: accepting a non-conventional product (the consumer's risk) or rejecting a conventional product (the producer's risk). This investigation explores the potential for false decisions caused by measurement errors in product assessments. By studying data near the control limits, a greater understanding of the manufacturing process is intended to facilitate informed decision-making, and guide the implementation of effective quality control methods. The investigation highlights the importance of …
Collaborative Robotic Finishing Platform For Metal Part Processing Towards Industry 5.0,
2024
National Research Council Canada (NRC)
Collaborative Robotic Finishing Platform For Metal Part Processing Towards Industry 5.0, Seyedhossein Hajargarbashi, Gabriel Côté, Jonathan Boisvert, Ramy Meziane, Chen Xu, Corentin Hubert, Sabrina Jocelyn, Clément Gosselin
Articles dans des actes de congrès
Manual finishing operations in aerospace and ground transportation industries are often associated with health-and-safety-related issues such as musculoskeletal disorders, productivity loss, and challenges in workforce renewal. This work presents an innovative automated solution to address these challenges, prioritizing the ease of implementation and affordability for small and midsize enterprises (SMEs). Our proposed solution is a collaborative robotic (cobotic) finishing platform designed to eliminate labor-intensive work while keeping human operators in the loop to manage unforeseen situations. This platform aims to eliminate health risks, enhance repeatability, improve product quality, and increase productivity. This paper describes the mechanical design of the platform, …
Ai And Ml-Based Risk Assessment Of Chemicals: Predicting Carcinogenic Risk From Chemical-Induced Genomic Instability,
2024
German Federal Institute for Risk Assessment
Ai And Ml-Based Risk Assessment Of Chemicals: Predicting Carcinogenic Risk From Chemical-Induced Genomic Instability, Ajay Vikram Singh, Preeti Bhardwaj, Peter Laux, Prachi Pradeep, Madleen Busse, Andreas Luch, Akihiko Hirose, Christopher J. Osgood, Michael W. Stacey
Biological Sciences Faculty Publications
Chemical risk assessment plays a pivotal role in safeguarding public health and environmental safety by evaluating the potential hazards and risks associated with chemical exposures. In recent years, the convergence of artificial intelligence (AI), machine learning (ML), and omics technologies has revolutionized the field of chemical risk assessment, offering new insights into toxicity mechanisms, predictive modeling, and risk management strategies. This perspective review explores the synergistic potential of AI/ML and omics in deciphering clastogen-induced genomic instability for carcinogenic risk prediction. We provide an overview of key findings, challenges, and opportunities in integrating AI/ML and omics technologies for chemical risk assessment, …
Understanding The Impacts Of Extreme Weather On The Power Transmission Infrastructure: A Machine Learning Approach To Quantifying Risks And Enhancing Grid Resilience,
2024
CUNY City College
Understanding The Impacts Of Extreme Weather On The Power Transmission Infrastructure: A Machine Learning Approach To Quantifying Risks And Enhancing Grid Resilience, Juan P. Montoya Rincon
Dissertations and Theses
This doctoral dissertation focuses on the resilience of power transmission infrastructure in tropical coastal environments, particularly in the face of extreme weather events such as hurricanes. The research is anchored on the case of the passage of Hurricane Maria in the Island of Puerto Rico in September of 2017 which caused the largest damage on the power infrastructure in US history. As such, the research investigates the interaction between extreme winds and power transmission infrastructure in complex terrain, aiming to quantify and predict power loss and damage to the infrastructure during such events. The study employs a comprehensive approach combining …
Airspace Saturation And Midair Collision Risk: A Case Study At A Class D Airport,
2024
Purdue University
Airspace Saturation And Midair Collision Risk: A Case Study At A Class D Airport, Luigi Raphael I. Dy, John H. Mott
International Journal of Aviation, Aeronautics, and Aerospace
Near midair collisions are precursor events to actual collisions and may be an indicator of risk. While previous studies have used reports of near midair collisions to relate factors such as airspace saturation to near midair collisions, the reports relied upon were generally subjective in nature. With the adoption of automatic dependent surveillance-broadcast (ADS-B), the approximate position of every equipped aircraft can be recorded. A six-month case study was performed at the Purdue University airport to relate the number of 1000-foot proximity events to airspace saturation, and whether the Class D airspace affected this relationship. Through a logistic regression analysis, …
Compare And Contrast The Intent Of Hacking Vs Penetration Testing,
2024
Harrisburg University of Science and Technology
Compare And Contrast The Intent Of Hacking Vs Penetration Testing, Kehinde Alabi
Harrisburg University Other Works
No abstract provided.
Contrast And Compare The Cyber Hacking Laws Between The United States, Russian Federation, And The People's Republic Of China,
2024
Harrisburg University of Science and Technology
Contrast And Compare The Cyber Hacking Laws Between The United States, Russian Federation, And The People's Republic Of China, Kehinde Alabi
Harrisburg University Other Works
Cyber hacking is a growing threat in the modern world. As the world becomes more digital, the threat of cybercrime continues to grow. Cyberattacks can lead to stolen personal information, financial losses and damage to critical information. The increase in the digital transformation of companies has also led to an increase in cyber security concerns. With cybercriminals using increasingly advanced methods to gain access and take advantage of sensitive information. As a result, governments around the world have developed measures, laws, and regulations to address cybercrime and protect against cyberattacks. The United States, Russian Federation, and the People’s Republic of …
Risk Assessment Of Microplastics Contamination In Soil And Leachate From Different Ages Of Landfill,
2024
Faculty of Science
Risk Assessment Of Microplastics Contamination In Soil And Leachate From Different Ages Of Landfill, Panuwat Koonmee
Chulalongkorn University Theses and Dissertations (Chula ETD)
Landfills were used for the disposal of waste materials, but they could contribute to microplastic (MP) pollution. MPs waste had been released in landfills into the surrounding environment, contaminating soil and leachate collection pond. Although there were many reports that MPs could generate in leachate and soil samples from the landfill, it exists many blanks for the evolution of physical and chemical characteristics of MPs with different landfill age. In order to address the question of changing in the abundances and characteristics of MPs in different ages of landfill as potential sources of contamination and the efficacy of existing landfill …
Relationship Between Microbial And Chemical Risk After Chlorination Of Domestic Wastewater For Discharge And Reclamation,
2024
Faculty of Science
Relationship Between Microbial And Chemical Risk After Chlorination Of Domestic Wastewater For Discharge And Reclamation, Rotsathon Plumsut
Chulalongkorn University Theses and Dissertations (Chula ETD)
Disinfection is crucial for protecting public health during wastewater reuse. Chlorination is a widely used disinfection method, but it also leads to the formation of disinfection byproducts (DBPs), which can pose environmental and health risks. Among these DBPs, haloacetonitriles (HANs), particularly dichloroacetonitrile (DCAN), are of significant concern due to their toxicity. This research investigated the relationship between microbiological and chemical risks associated with chlorination in secondary and tertiary wastewater treatment plants (WWTPs) in Bangkok. The study found that secondary wastewater (9.0-14.0 mg/L) required up to 10 times higher initial chlorine levels to achieve the same norovirus reduction levels (3-5 log …
Silica Dust Exposure Assessment Using Job-Exposure Matrix:A Case Of Sandstone Workers In Thailand,
2024
Faculty of Science
Silica Dust Exposure Assessment Using Job-Exposure Matrix:A Case Of Sandstone Workers In Thailand, Chamaiphon Chari
Chulalongkorn University Theses and Dissertations (Chula ETD)
Respirable crystalline silica (RCS) has been classified as a human carcinogen by the International Agency for Research on Cancer (IARC). In Thailand, household sandstone workers were one of the most susceptible occupational groups to silicosis. However, a lack of current information about their work patterns and job-related exposures to respirable crystalline silica could hinder the success of tracking and surveillance programs. This study was conducted to explore working characteristics and patterns, and to evaluate the work diary data in the estimation of RCS exposure and health risk among household sandstone workers. All data were collected from a work diary record …
Exposure To Low (10 Cgy) Doses Of ⁴He Ions Leads To An Apparent Increase In Risk Taking Propensity In Female Rats,
2024
Macon & Joan Brock Virginia Health Sciences at Old Dominion University
Exposure To Low (10 Cgy) Doses Of ⁴He Ions Leads To An Apparent Increase In Risk Taking Propensity In Female Rats, Nina Li, Simran Phuyal, Elliot Smits, Faith E. Reid, Ella N. Tamgue, Paola Alvarado Arriaga, Richard A. Britten
Department of Medicine Faculty Publications
The planned missions to the Moon and Mars will present more significant health challenges to astronauts compared to low earth orbit missions. During deep space missions, astronauts will be constantly exposed to Space radiation (SR). Multiple rodent studies suggest that < 25 cGy of SR impairs performance in executive functions, which play a key role in advanced cognitive processes, but also regulate response inhibition and impulse control. There is the possibility that SR exposure may exacerbate aberrant behaviors evoked by psychological stress related to exposure to isolated and confined (ICE) hostile environment or independently induce additional aberrant behaviors. This study has determined that female Wistar rats exposed to 10 cGy of 250 MeV/n He had an increased risk taking propensity (RTP)\compared to shams. The increased RTP of the He-exposed rats was associated with significantly increased reaction times during the trials, suggesting a SR-induced loss of processing speed. The response times of the He-exposed rats were even further reduced in trials that immediately followed a loss, raising the possibility that conflict and interference avoidance may be impaired after SR exposure. Whether these findings occur following other types of SR exposure, and/or in male rats remains to be determined.
Transitioning To A Lower Global Warming Refrigerant, A Performance Study Of R-513a And Hfc-134a In Commercial Chillers,
2024
Missouri University of Science and Technology
Transitioning To A Lower Global Warming Refrigerant, A Performance Study Of R-513a And Hfc-134a In Commercial Chillers, Hossein Abedsoltan, Mark B. Shiflett
Chemical and Biochemical Engineering Faculty Research & Creative Works
The performance of R-513A and HFC-134a refrigerants is compared in two identical chillers operating at the University of Kansas. R-513A is a more environmentally friendly refrigerant due to its lower global warming potential that can be used as a retrofit replacement for HFC-134a in chillers. This study investigates the performance comparison of transitioning from HFC-134a to R-513A. The chillers have been in operation for two years, and cooling capacity, coefficient of performance, and other operating parameters are compared under similar cooling conditions. Cooling capacities ranged from 100 to 500 kW for both chillers. Overall, the energy consumption and coefficient of …
Computational Analysis Of Vascular Aneurysms,
2024
Michigan Technological University
Computational Analysis Of Vascular Aneurysms, Seyedmostafa Rezaeitaleshmahalleh
Dissertations, Master's Theses and Master's Reports
Vascular aneurysms, such as intracranial aneurysms (IAs) and abdominal aortic aneurysms (AAAs), pose significant health risks, particularly upon rupture. Disturbed hemodynamics, characterized by swirling flow patterns, can lead to cellular and structural changes that disrupt normal physiological processes and contribute to destructive vascular remodeling. Integrating hemodynamic analysis into clinical assessments of aneurysms has become crucial, especially through patient-specific computational fluid dynamics (CFD) simulations based on medical imaging. However, the complexity of CFD tools presents challenges in model creation and post-simulation analysis, limiting their accessibility to clinicians.
This project aimed to advance aneurysm management by exploring the role of intraluminal thrombus …
On Uncertainty For Ill-Posed Robot Decision Problems,
2024
West Virginia University
On Uncertainty For Ill-Posed Robot Decision Problems, Jared Joseph Beard
Graduate Theses, Dissertations, and Problem Reports (ETD)
As robots adopt more real world responsibilities, they will be expected to solve more complicated problems. In some cases limited prior knowledge will result in unmodelled environmental conditions; in others, multiple users may have competing perspectives on how to frame a decision problem. Many existing frameworks, namely Markov decision processes (MDP) presuppose users have identified a specific problem with models sufficient to solve or learn a problem. If we wish to extend MDPs to novel problems or those heavily dependent on user feedback, autonomous decision makers must be able to identify limitations in how a given problem is framed and …
