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Articles 3361 - 3390 of 302419

Full-Text Articles in Physical Sciences and Mathematics

Bibliometric Review Of The Landscape And Thematic Structure Of Research On Sustainable Mining In Asean, 1942–2022, Nathatai Janjirawatna, Sirisuhk Rakthin, Philip Hallinger May 2024

Bibliometric Review Of The Landscape And Thematic Structure Of Research On Sustainable Mining In Asean, 1942–2022, Nathatai Janjirawatna, Sirisuhk Rakthin, Philip Hallinger

Journal of Sustainable Mining

This bibliometric review addressed the lack of consolidated information on the current state of sustainable mining in the ASEAN region. The review analyzed bibliographic data associated with 539 Scopus-indexed documents on sustainable mining in ASEAN nations published through the end of 2022. Descriptive statistics identified a great disparity in the scope of research on sustainable mining practices across the ASEAN countries. Surprisingly, a significant portion of the extant research on sustainable mining in the region has been authored by scholars from outside of ASEAN. Keyword analyses highlighted several emerging research topics including life cycle assessment, conservation of natural resources, climate …

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Planetary Exploration Via Fully Automatic Topological Structure Extraction Using Adaptive Resonance, Jonathan Kissi May 2024

Planetary Exploration Via Fully Automatic Topological Structure Extraction Using Adaptive Resonance, Jonathan Kissi

Electronic Thesis and Dissertation Repository

Renewed interest in Solar System exploration, along with ongoing improvements in computing, robotics and instrumentation technologies, have reinforced the case for remote science acquisition systems development in space exploration. Testing systems and procedures that allow for autonomously collected science has been the focus of analogue field deployments and mission planning for some time, with such systems becoming more relevant as missions increase in complexity and ambition. The introduction of lidar and laser scanning-type instruments into the geological and planetary sciences has proven popular, and, just as with the established image and photogrammetric methods, has found widespread use in several research …

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Creating An Interdisciplinary Learning Community Between Two Cross-Departmental Courses, Krista Mcbride, Maggie Monteverde May 2024

Creating An Interdisciplinary Learning Community Between Two Cross-Departmental Courses, Krista Mcbride, Maggie Monteverde

Faculty Scholarship Symposium

An Interdisciplinary Learning Community (ILC) consisting of two cross-departmental general education courses has been created. Advantages to linking these courses will be presented. Further, the assignments and course material used to make this learning community successful will be presented. Challenges to developing and evaluating shared assignments for such linked classes will also be discussed. Finally, student feedback will be shown from students enrolled in these courses, which illustrate the positive effects blending these two classes had on the student’s learning experience. As an example, an ILC between a general physics course and a literature course will be introduced.

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Anthropogenic Problems Threatening Major Cities: Largest Surface Deformations Observed In Hatay, Türkiye Based On Sbas-Insar, Şükrü Onur Karaca, Gültekin Erten, Semih Ergi̇ntav, Shuhab D. Khan May 2024

Anthropogenic Problems Threatening Major Cities: Largest Surface Deformations Observed In Hatay, Türkiye Based On Sbas-Insar, Şükrü Onur Karaca, Gültekin Erten, Semih Ergi̇ntav, Shuhab D. Khan

Bulletin of the Mineral Research and Exploration

The surface deformation caused by tectonic activities and anthropogenic factors poses a great threat to cities worldwide. The investigation and monitoring of these deformations are crucial in order to create risk analysis for the future. The problem in this case is to investigate the surface deformations and their negative effects caused by groundwater use and to identify possible landslide areas. In this study, the surface deformations in Hatay province were analyzed using SBAS-InSAR. The results from these analyses were evaluated by field observations. Sentinel-1 descending (183 datasets) and ascending (147 datasets) track geometries were selected to determine the surface deformation …

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Evaluation Of Radioactive Properties And Microfaunal Evidence In The Bosphorus And The Dardanelles Straits And Golden Horn Sediments, İpek F. Barut, Engin Meri̇ç, Mustafa Eryilmaz, Atike Nazi̇k, Feyza Di̇nçer, Erol Kam May 2024

Evaluation Of Radioactive Properties And Microfaunal Evidence In The Bosphorus And The Dardanelles Straits And Golden Horn Sediments, İpek F. Barut, Engin Meri̇ç, Mustafa Eryilmaz, Atike Nazi̇k, Feyza Di̇nçer, Erol Kam

Bulletin of the Mineral Research and Exploration

The aim of this study is to investigate radioactive pollutants from pollution loads transported from the Black Sea to the Aegean Sea by the Turkish Straits System and their effects on microfauna (benthic foraminifer and ostracod) assemblages. In the study, the effects of gross alpha and beta activity on the species number, species diversity, dominant species and species richness of benthic foraminiferal and ostracod assemblages were investigated in 16 bottom sediments taken from different depths in the Golden Horn, Bosphorus and Dardanelles straits. In the studied sediment samples examined 61 genera and 64 species of benthic foraminifera, 23 genera and …

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A Simple And Practical Tool For Indirect Determination Of The Unconfined Compressive Strength Of Most Common Construction Materials, Kamil Kayabali, Turgay Beyaz, İlknur Karaaslan Özdemi̇r, Deniz Yilmaz May 2024

A Simple And Practical Tool For Indirect Determination Of The Unconfined Compressive Strength Of Most Common Construction Materials, Kamil Kayabali, Turgay Beyaz, İlknur Karaaslan Özdemi̇r, Deniz Yilmaz

Bulletin of the Mineral Research and Exploration

Determination of the unconfined compressive strength (UCS) of construction materials in the laboratory is tedious and time-consuming. There have been many attempts to indirectly predict UCS using simpler tools and techniques. One of them is the nail gun. The scope of this investigation is to design a nailer which can be applied all construction materials whose UCS range from 1-100 MPa. In the research, rocks, bricks, and concretes prepared in different cement/sand ratios with different strength ranges were used as materials. The unconfined compressive strength of the materials used in the experiments was first determined by conventional compression tests. The …

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Time-Lapse Ground Penetrating Radar (Gpr) Imaging Of Used Engine Oil Contamination, Hafiz Mohammed Nazi̇fi̇, Ertan Pekşen, Ertuğrul Gürbüz, Levent Gülen May 2024

Time-Lapse Ground Penetrating Radar (Gpr) Imaging Of Used Engine Oil Contamination, Hafiz Mohammed Nazi̇fi̇, Ertan Pekşen, Ertuğrul Gürbüz, Levent Gülen

Bulletin of the Mineral Research and Exploration

Time-Lapse Ground Penetrating Radar (GPR) was employed to study used engine oil (UEO) contamination of sandy environment in laboratory setting. GPR is a near-surface geophysical method that uses electromagnetic field to provide image of the dielectric properties of earth materials to detect structures and changes in material properties within the subsurface. This research aimed to detect, monitor and map the migration of UEO contaminant in sand. The results of this study revealed that the migration of the UEO contamination in homogeneously laid sand is non-uniform. UEO plumes were identified as high amplitude signals with enhanced reflectivity. There was a progressive …

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Active Tectonics Of Western Kosovo: Insights From Geomorphic And Structural Analyses, Alper Gürbüz, Astrit Shala, Shemsi Mustafa, Aytekin Erten May 2024

Active Tectonics Of Western Kosovo: Insights From Geomorphic And Structural Analyses, Alper Gürbüz, Astrit Shala, Shemsi Mustafa, Aytekin Erten

Bulletin of the Mineral Research and Exploration

Kosovo is located in a key position in the central-west part of the Balkans providing an opportunity to understand the far-field effects of distributed intracontinental deformation caused by the Aegean extension in the south and Adriatic compression in the west. It is also situated along the NE-SW trending Shkodër-Pejë transverse zone, where the Dinarides and Albanides-Hellenides orogenic belts are juxtaposed. While the instrumental seismicity of Kosovo indicates the activity of this fault zone and many others, the active faults in the country were not discussed in detail in the current literature. In this study, we analyzed both the geomorphic and …

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Paleocene-Eocene Foraminifera From The Tuz Gölü Basin (Salt Lake Basin, Central Türkiye) And Their Paleoenvironmental Interpretations, Muhittin Görmüş, Mustafa Yildiz, Alper Bozkurt, Aynur Hakyemez May 2024

Paleocene-Eocene Foraminifera From The Tuz Gölü Basin (Salt Lake Basin, Central Türkiye) And Their Paleoenvironmental Interpretations, Muhittin Görmüş, Mustafa Yildiz, Alper Bozkurt, Aynur Hakyemez

Bulletin of the Mineral Research and Exploration

Paleocene-Eocene aged sediments from the east of Tuz Gölü Basin (Central Türkiye) provide significant data for foraminifera contents and their paleoenvironmental clues. They are important in revealing the stratigraphy of the region and the Paleocene-Eocene geological history of Türkiye. The sediments, composed mainly of carbonates, are known as Karapınaryaylası Formation. In this formation, benthic foraminifera representing SBZ2 to SBZ12 biozones corresponding to the Selandian-Late Cuisian time interval were identified in ten measured stratigraphical sections. The zonal interval from the E7 Zone (late Ypresian) to the E10 Zone (Lutetian) is characterized by the marker species of planktonic foraminifera defined in the …

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Magnetic Inversion Modeling Of Subsurface Geologic Structures For Mineral Deposits Mapping In Southeastern Nigeria, Ema Abraham, Ayatu Usman, Kelvin Chima, George-Best Azuoko, Iheanyi Ikeazota May 2024

Magnetic Inversion Modeling Of Subsurface Geologic Structures For Mineral Deposits Mapping In Southeastern Nigeria, Ema Abraham, Ayatu Usman, Kelvin Chima, George-Best Azuoko, Iheanyi Ikeazota

Bulletin of the Mineral Research and Exploration

Magnetic inversion techniques have been implemented to infer the extension and geometry of magnetic structures and also evaluate its influence on mineralization within Abakaliki and its environs, southeastern Nigeria. The modeling approach considers the techniques of threedimensional (3D) magnetic data inversion, Euler deconvolution, analytic signal inversion, Enhanced Local Wavenumber (ELW) Technique and Particle Swarm Optimization (PSO) to estimate source parameters and compare results. Model solutions were interpreted to represent possible geologic units with varying trends, housing mineralization within the study region. Results from inversion computation over some active mine locations show subsurface bodies with magnetic susceptibilities >0.00188 SI. Model results …

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Vitrinite Reflectances And Mineralogy Of Coal Clasts In The Late Carboniferous Sequences In The Two-Deep Research Wells From The Kozlu Coalfield (Zonguldak Basin, Nw Türkiye), Ali İhsan Karayi̇ği̇t, Rıza Görkem Oskay May 2024

Vitrinite Reflectances And Mineralogy Of Coal Clasts In The Late Carboniferous Sequences In The Two-Deep Research Wells From The Kozlu Coalfield (Zonguldak Basin, Nw Türkiye), Ali İhsan Karayi̇ği̇t, Rıza Görkem Oskay

Bulletin of the Mineral Research and Exploration

Fifty-four coal clast samples in the siliciclastic rocks (e.g., sandstone and conglomerate) were collected from cores of two-deep research wells (K20H and K20K) drilled at the Kozlu coalfield in Zonguldak Basin, and for the first time, they were evaluated using mineralogy by XRD and SEMEDX and random vitrinite reflectance (%Rr) measurements in order to find out their origin and timing. Petrographic observations on polish surfaces show that the coal clasts are either entirely xylitic/vitrinitic particles or coals including a broader range of macerals. The detected minerals in the samples are mostly derived from the parental coal seams and, to a …

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Coal Quality, Mineralogy, Petrography, And Geochemistry Of The High-Strontium Bozburun Lignite (Malatya, Eastern Türkiye), Rıza Görkem Oskay, Ali İhsan Karayi̇ği̇t May 2024

Coal Quality, Mineralogy, Petrography, And Geochemistry Of The High-Strontium Bozburun Lignite (Malatya, Eastern Türkiye), Rıza Görkem Oskay, Ali İhsan Karayi̇ği̇t

Bulletin of the Mineral Research and Exploration

The Bozburun coalfield hosts a late Miocene 1.1 m thick coal seam. This study aims to determine coal quality, mineralogy, petrography and geochemistry, and controlling factors of elemental enrichments. The coals are generally black and greyish black in colour, and the low part of the seam commonly includes fossil shell remains. The ash yield displays a decreasing trend towards the upper part of the seam; in turn, gross calorific and total C values increase upwards. The total S content being generally higher than 5% (on dry basis), displays an increasing trend towards the upper part. In the entire seam, huminite …

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Modelling And Computation Of Gravitational Attraction, Gradient Tensors, Rotational And Horizontal Invariants Of Asteroid Bennu (101955), Itokawa (25143) And Eros (433) Via 2d Non-Uniform Fft, İlkin Özsöz May 2024

Modelling And Computation Of Gravitational Attraction, Gradient Tensors, Rotational And Horizontal Invariants Of Asteroid Bennu (101955), Itokawa (25143) And Eros (433) Via 2d Non-Uniform Fft, İlkin Özsöz

Bulletin of the Mineral Research and Exploration

The internal structure and mass distribution of the terrestrial objects are yet unknown. The 2D gravity model with a constant density of the terrestrial objects can shed light on the surficial or textural heterogeneity due to topographic variations of the terrestrial objects. Three different steroids, which are Bennu (101955), Itokawa (25143) and Eros (433) are modelled in this study. During the modelling phase, a different number of edges, elements, nodes, and faces are used to describe the 3D models of Bennu, Itokawa, and Eros. These 3D models are used in 2D Non-Uniform Fast Fourier Transform (NU-FFT) applications to obtain gravitational …

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Toward The Integration Of Behavioral Sensing And Artificial Intelligence, Subigya K. Nepal May 2024

Toward The Integration Of Behavioral Sensing And Artificial Intelligence, Subigya K. Nepal

Dartmouth College Ph.D Dissertations

The integration of behavioral sensing and Artificial Intelligence (AI) has increasingly proven invaluable across various domains, offering profound insights into human behavior, enhancing mental health monitoring, and optimizing workplace productivity. This thesis presents five pivotal studies that employ smartphone, wearable, and laptop-based sensing to explore and push the boundaries of what these technologies can achieve in real-world settings. This body of work explores the innovative and practical applications of AI and behavioral sensing to capture and analyze data for diverse purposes. The first part of the thesis comprises longitudinal studies on behavioral sensing, providing a detailed, long-term view of how …

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Probing The Surface Structure Of Ferrocene Modified Electrodes Using Cyclic Voltammetry, Rebekah S. Stanley May 2024

Probing The Surface Structure Of Ferrocene Modified Electrodes Using Cyclic Voltammetry, Rebekah S. Stanley

Reviews, Analyses, and Instructional Studies in Electrochemistry (RAISE)

Modifying electrodes imparts new electrochemical properties for use in various applications. To fully understand these electrochemical properties the structure of the modified surface needs to be characterized. Cyclic voltammetry (CV) offers a quick and simple way to determine if the surface structure has been homogeneously modified even at low surface concentrations. Nonideal responses in CV scans give insights to the microenvironments and structure of the monolayer surface that may be indistinguishable in other techniques. Peak fitting CV data, coupled with other surface techniques, can further characterize the contributions and nature of these microenvironments and aid in structural determination.

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An Overview Of How To Measure The Kinetic Properties Of An Anode Material For The Chlorine Evolution Reaction, Cameron Vann May 2024

An Overview Of How To Measure The Kinetic Properties Of An Anode Material For The Chlorine Evolution Reaction, Cameron Vann

Reviews, Analyses, and Instructional Studies in Electrochemistry (RAISE)

The process of generating chlorine gas using electrolysis in aqueous systems is well established. However, a new process requires chlorine to be generated at high temperatures using molten salt. This harsh environment requires a new study of anode materials for the chlorine evolution reaction. Anode materials can be compared by their kinetic parameters, the transfer coefficient α and the exchange current i0. The basic theory of these properties as they relate to the chlorine evolution reaction has been detailed and an analysis method for finding these effective parameters has been shown and demonstrated.

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Model To Demonstrate Effects Of Mass Transfer And Applied Current In An Electrolytic Cell, George Ankrah May 2024

Model To Demonstrate Effects Of Mass Transfer And Applied Current In An Electrolytic Cell, George Ankrah

Reviews, Analyses, and Instructional Studies in Electrochemistry (RAISE)

This study investigates the relationship between applied current and resulting cell potential in an electrolytic system, considering the transport of electroactive species. By applying Michael Faraday's laws of electrolysis and the Nernst-Planck equation, the behavior of electroactive species in diffusion-controlled systems with and without stirring is modeled. The plots demonstrate how stirring enhances ion transport and establishes a stable Nernst diffusion layer, affecting the kinetics of electrochemical reactions. Understanding these dynamics is crucial for optimizing electrolysis processes.

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Model Of The Effect Of Voltage On Contact Angle In An Electrolytic Cell Reaction, Aaron Essilfie May 2024

Model Of The Effect Of Voltage On Contact Angle In An Electrolytic Cell Reaction, Aaron Essilfie

Reviews, Analyses, and Instructional Studies in Electrochemistry (RAISE)

This paper investigates the hypothesis that the contact angle at the meniscus of an electrode-electrolyte can be altered during a redox reaction through the coupled understanding of electrowetting and capillarity rise. Recent studies in electrowetting have focused on dielectric surfaces but research on contact angle at the electrode-electrolyte surface is lacking. The study employs a basic electrolytic cell. By applying principles of electrowetting and capillary rise the research aims to understand the relationship between applied voltage and contact angle, to advancements in electrochemistry and microfluidics.

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Review Of Cyclic Voltammetry Measurements For Uranium In Flinak Molten Salt, Jackson Ivory May 2024

Review Of Cyclic Voltammetry Measurements For Uranium In Flinak Molten Salt, Jackson Ivory

Reviews, Analyses, and Instructional Studies in Electrochemistry (RAISE)

The electrochemical behavior of uranium FLiNaK molten salts is explored, focusing on cyclic voltammetry (CV) as a powerful tool for redox characterization and diffusion studies. Through a comprehensive review of recent research, the study highlights the significance of CV in understanding electrode kinetics, material compatibility, and process optimization in molten salt environments. The findings underscore the potential of FLiNaK molten salt reactors in advancing nuclear energy technologies, fuel processing, and waste management strategies. Collaborative interdisciplinary efforts are emphasized to address challenges and accelerate innovation in electrochemical methods for nuclear applications.

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Optical Tweezers Explorations: Dna-Mitoxantrone Interactions At 20pn, Heléna Kathryn Beeloo May 2024

Optical Tweezers Explorations: Dna-Mitoxantrone Interactions At 20pn, Heléna Kathryn Beeloo

Honors Program Theses and Projects

Mitoxantrone is a chemotherapy drug that treats a variety of cancers by inhibiting cancer cell replication through intercalation with DNA. Intercalation is the process by which certain small molecules slide flat planar regions in their structure between the base pairs of DNA. This increases the stacking force in the DNA double helix, preventing DNA replication by increasing the force required to separate the two strands that compose the helix. In this study, dual-beam optical tweezers were used to determine the binding kinetics and dissociation constant of Mitoxantrone to single molecules of DNA at 20 pN of force. This study utilized …

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Living Emission Abolish Filters (Leafs) For Methane Mitigation: Design And Operation, Richard Hamilton, Nicholas Griffith, Peter Salamon, Robert Handler, Marina G. Kalyuzhnaya May 2024

Living Emission Abolish Filters (Leafs) For Methane Mitigation: Design And Operation, Richard Hamilton, Nicholas Griffith, Peter Salamon, Robert Handler, Marina G. Kalyuzhnaya

Michigan Tech Publications, Part 2

As one of the most potent greenhouse gases, methane is a critical target for the near-term mitigation of global warming. Efficient, scalable, easy-to-implement, and robust mitigation technologies are urgently needed to assist in reaching methane abolishment. The goal of this research was to test the applicability of active, extremophilic methanotrophic cells as a baseline concept for engineered systems aiming at methane capturing. The system, named living emission abolish filters (LEAFs), represents an array of immobilized biomaterials capable of capturing methane directly from vent streams. The biomaterials were made using cells of Methylotuvimicrobium alcaliphilum 20ZR, a robust halophilic methanotrophic bacterium with …

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Dissecting Trypanosome Metabolism By Discovering Glycolytic Inhibitors, Drug Targets, And Glycosomal Ph Regulation, Daniel Hale Call May 2024

Dissecting Trypanosome Metabolism By Discovering Glycolytic Inhibitors, Drug Targets, And Glycosomal Ph Regulation, Daniel Hale Call

Theses and Dissertations

Trypanosoma brucei, the causative agent of African trypanosomiasis, and its relatives Trypanosoma cruzi and several Leishmania species belong to a class of protozoa called kinetoplastids that cause a significant health burden in tropical and semitropical countries across the world. While an improved therapy was recently approved for African trypanosomiasis, the therapies available to treat infections caused by T. cruzi and Leishmania spp. remain relatively poor. Improving our understanding of T. brucei metabolism can inform on metabolism of its relatives. The purpose of the research presented in this dissertation was to develop novel tools and methods to study metabolism in T. …

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Surmounting Challenges In Aggregating Results From Static Analysis Tools, Dr. Ann Marie Reinhold, Brittany Boles, A. Redempta Manzi Muneza, Thomas Mcelroy, Dr. Clemente Izurieta May 2024

Surmounting Challenges In Aggregating Results From Static Analysis Tools, Dr. Ann Marie Reinhold, Brittany Boles, A. Redempta Manzi Muneza, Thomas Mcelroy, Dr. Clemente Izurieta

Military Cyber Affairs

Aggregation poses a significant challenge for software practitioners because it requires a comprehensive and nuanced understanding of raw data from diverse sources. Suites of static-analysis tools (SATs) are commonly used to assess organizational security but simultaneously introduce significant challenges. Challenges include unique results, scales, configuration environments for each SAT execution, and incompatible formats between SAT outputs. Here, we document our experiences addressing these issues. We highlight the problem of relying on a single vendor's SAT version and offer a solution for aggregating findings across multiple SATs, aiming to enhance software security practices and deter threats early with robust defensive operations.

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Generative Machine Learning For Cyber Security, James Halvorsen, Dr. Assefaw Gebremedhin May 2024

Generative Machine Learning For Cyber Security, James Halvorsen, Dr. Assefaw Gebremedhin

Military Cyber Affairs

Automated approaches to cyber security based on machine learning will be necessary to combat the next generation of cyber-attacks. Current machine learning tools, however, are difficult to develop and deploy due to issues such as data availability and high false positive rates. Generative models can help solve data-related issues by creating high quality synthetic data for training and testing. Furthermore, some generative architectures are multipurpose, and when used for tasks such as intrusion detection, can outperform existing classifier models. This paper demonstrates how the future of cyber security stands to benefit from continued research on generative models.

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Toxic Chocolate: An Investigation Of Heavy Metal Concentrations In Chocolate Products, Meredith E. Hoff May 2024

Toxic Chocolate: An Investigation Of Heavy Metal Concentrations In Chocolate Products, Meredith E. Hoff

Student Scholarship

Many news organizations and scientific journals have recently reported high concentrations of lead and cadmium in chocolate products. The consumption of lead, cadmium, and other toxic metals can lead to numerous health impacts and impair development in children.1,2 Previous studies have specifically focused on the quantification of lead and cadmium in mainstream chocolate products, neglecting small businesses and the quantification of other heavy metals. This study addresses this disparity by analyzing the concentrations of lead, cadmium, barium, strontium, thallium, and mercury in lesser-known chocolate products from Castronovo Chocolate, Meridian Cacao Co., and Lidl. Two ICP-OES instruments and a direct mercury …

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05-06--2024 Orsp Newsletter, Liz Williamson May 2024

05-06--2024 Orsp Newsletter, Liz Williamson

ORSP Newsletter

Library Faculty Win NIH Award, Uniform Guidance Updates,

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Effects Of Urbanization On Eutrophication Parameters In Three Tidal Creeks, Ella Swantek May 2024

Effects Of Urbanization On Eutrophication Parameters In Three Tidal Creeks, Ella Swantek

Honors Theses

Marshes and swashes are vital environments as a controlling barrier between land affected by various pollutants and the ocean. Eutrophication and the effects of this process can be detrimental for the areas experiencing it. I am interested in ways areas that have little contact with human interactions compare to areas that are heavily urbanized, and whether either of these locations is at a higher risk for eutrophication. Using spectrophotometry and fluorometry, I analyzed samples collected from the relatively undeveloped and restricted-access locations of Waities Island Beach and Dunn Sound monthly for dissolved nutrients, and chlorophyll. At the time of sampling, …

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The Impact Of Heterogeneous Voting Strategies And Candidate Issue Adaptation On Elections: An Agent-Based Model, Harmony Peura May 2024

The Impact Of Heterogeneous Voting Strategies And Candidate Issue Adaptation On Elections: An Agent-Based Model, Harmony Peura

Student Research Submissions

Political candidates in a democracy articulate positions on the issues of the day, but they are also highly aware of voter sentiment on those issues, and tailor their campaigns accordingly as they seek to win elections. Voters, too, adjust their political opinions based on (among other things) interactions with others in their social network. I present an agent-based simulation that models this dynamic interplay between candidates and voters, in order to shed light on what outcomes candidates can expect to result from a policy of “chasing” votes. The voters in the simulation differ from one another in the decision procedure …

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The Ring-Closing Reaction Of Cyclopentadiene Probed With Ultrafast X‑Ray Scattering, Lisa Huang, Lauren Bertram, Lingyu Ma, Nathan Goff, Stuart W. Crane, Asami Odate, Thomas Northey, Andrés Moreno Carrascosa, Mats Simmermacher, Sri Bhavya Muvva, Joseph D. Geiser, Matthew J. Lueckheide, Zane Phelps, Mengning Liang, Xinxin Cheng, Ruaridh Forbes, Joseph S. Robinson, Matthew J. Hayes, Felix Allum, Alice E. Green, Kenneth Lopata, Artem Rudenko, Thomas J. A. Wolf, Martin Centurion, Daniel Rolles, Michael P. Minitti, Adam Kirrander, Peter M. Weber May 2024

The Ring-Closing Reaction Of Cyclopentadiene Probed With Ultrafast X‑Ray Scattering, Lisa Huang, Lauren Bertram, Lingyu Ma, Nathan Goff, Stuart W. Crane, Asami Odate, Thomas Northey, Andrés Moreno Carrascosa, Mats Simmermacher, Sri Bhavya Muvva, Joseph D. Geiser, Matthew J. Lueckheide, Zane Phelps, Mengning Liang, Xinxin Cheng, Ruaridh Forbes, Joseph S. Robinson, Matthew J. Hayes, Felix Allum, Alice E. Green, Kenneth Lopata, Artem Rudenko, Thomas J. A. Wolf, Martin Centurion, Daniel Rolles, Michael P. Minitti, Adam Kirrander, Peter M. Weber

Martin Centurion Publications

The dynamics of cyclopentadiene (CP) following optical excitation at 243 nm was investigated by time-resolved pump−probe X-ray scattering using 16.2 keV X-rays at the Linac Coherent Light Source (LCLS). We present the first ultrafast structural evidence that the reaction leads directly to the formation of bicyclo[2.1.0]pentene (BP), a strained molecule with three- and four-membered rings. The bicyclic compound decays via a thermal backreaction to the vibrationally hot CP with a time constant of 21 ± 3 ps. A minor channel leads to ring-opened structures on a subpicosecond time scale.

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Artificial Intelligence And Music: Analysis Of Music Generation Techniques Via Deep Learning And The Implications Of Ai In The Music Industry, David Bryce May 2024

Artificial Intelligence And Music: Analysis Of Music Generation Techniques Via Deep Learning And The Implications Of Ai In The Music Industry, David Bryce

Honors Projects in Data Science

The use of artificial intelligence (AI) is quickly gaining relevancy in creative fields, and its emergence into the music industry comes with many unique implications. This paper examines the technical processes of creating music with AI and machine learning, the relationship between music and emotion, and finally the implications and ethical considerations for AI generated music in creative industries. As part of this project, a generative deep learning model (Music Variational Autoencoder) is explored and applied to generate music using a pre-trained training set of piano rolls. The AI reconstructions are based on self-made 4 measure electronic instrumental tracks. 46 …

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