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Pembelajaran Berbasis Proyek Dalam Pembelajaran Ilmu Pengetahuan Alam Untuk Meningkatkan Hasil Belajar Siswa, Agustinus Tanggu Daga, Matias Hota Heli, Petrus Lende Aug 2025

Pembelajaran Berbasis Proyek Dalam Pembelajaran Ilmu Pengetahuan Alam Untuk Meningkatkan Hasil Belajar Siswa, Agustinus Tanggu Daga, Matias Hota Heli, Petrus Lende

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Penerapan Ilmu Pengetahuan Alam di sekolah dasar sebagai salah satu mata pelajaran mendukung pelaksanaan pendidikan abad 21. Masalah yang sering ditemui adalah pengetahuan yang kirang pada siswa tentang esensi keilmuan Ilmu Pengetahuan Alam yang berdampak pada kinerja, baik dalam proses pembelajaran maupun dalam hasil belajar. Penelitian ini mengkaji secara ilmiah dampak terhadap hasil belajar dalam pembelajaran berbasis proyek (PjBL). Untuk itu diambil 18 siswa kelas V sebagai subyek penelitian. Penelitian ini menggunakan pendekatan kuantitatif dan metode kuasi eksperimen. Tes hasil belajar digunakan sebagai instrument pengumpulan data yang diterapkan sebelum dan sesudah intervensi. Analisis data mencakup beberapa pendekatan yaitu analisis deskriptif, …

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Analisis Swot Dalam Implementasi Manajemen Berbasis Sekolah Di Sekolah Dasar Islam Terpadu, Ainul Mardhiyah, Muhamad Sofian Hadi Aug 2025

Analisis Swot Dalam Implementasi Manajemen Berbasis Sekolah Di Sekolah Dasar Islam Terpadu, Ainul Mardhiyah, Muhamad Sofian Hadi

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Riset ini dilakukan untuk mencermati analisis SWOT dalam pengelolaan manajemen berbasis sekolah. Kemampuan Analisis SWOT sangat diperlukan untuk menjawab tantangan sekolah di Era Globalisasi. Metode yang digunakan adalah metode kualitatif deskriptif. Subjek penelitian yaitu guru dan kepala lembaga pendidikan. Data yang terkumpul dianalisis lalu diinterpretasi dalam bentuk deskripsi. Hasil Penelitian menunjukkan: (1) Strengths 80% (2) Weakness 64% (3) Opportunities 74% (4) Threaths 66%. Dapat disimpulkan bahwa Analisis SWOT dalam Implementasi MBS di SDIT Bintang telah dilaksanakan dengan cukup baik (71%) meskipun terdapat kelemahan yaitu adakalanya program sekolah yang terkendala manajemen keuangan sekolah yang sentralistik. Strategi sekolah adalah fokus pada kekuatan …

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Analyzing The Necessities For Blended Learning In Higher Education: A Pathway To Flexible Learning, Faznah Faznah, Khaerudin Khaerudin, Indina Tarjiah Aug 2025

Analyzing The Necessities For Blended Learning In Higher Education: A Pathway To Flexible Learning, Faznah Faznah, Khaerudin Khaerudin, Indina Tarjiah

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Rapidly developing educational technology innovations require educational institutions to provide innovation in creating effective and efficient learning to achieve optimal educational goals. Blended learning is an alternative for institutions that still implement conventional learning to integrate technology into learning and overcome the problem of learning duration so that students can learn actively and flexibly. This study aims to collect information about student needs in designing a flexible blended learning model to optimize learning in learning media courses. Needs analysis is used to explore information about gaps, student needs, and the readiness of lecturers and institutions in creating a blended learning …

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The Multicultural Social Fabric And Its Impact On The Assimilation Of The French And British Education Systems In Cameroon, Fatima Zohra Gueddouda Mekhanet Aug 2025

The Multicultural Social Fabric And Its Impact On The Assimilation Of The French And British Education Systems In Cameroon, Fatima Zohra Gueddouda Mekhanet

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This article examines the impact of Cameroon's diverse social fabric on the successful adoption of the French and British colonial educational systems. Relying on the descriptive analytical approach, the historical and social contexts that contributed to local communities’ acceptance of colonial education were studied, with a focus on cultural values, ethnic, and religious diversity. The research aims to provide a comprehensive view on how education and educational policies are affected by cultural and social diversity in Cameroon. The research began with a historical background on ethnic and cultural diversity in pre-colonial Cameroon, pointing to the nature of the diverse social …

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Students' Attitudes Towards Cooperative Learning In Offline And Online Language Cl, Muhammad Bayu Aji Putra Harianto, Suharyadi Suharyadi, Shinta Tresnadewi Aug 2025

Students' Attitudes Towards Cooperative Learning In Offline And Online Language Cl, Muhammad Bayu Aji Putra Harianto, Suharyadi Suharyadi, Shinta Tresnadewi

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This research investigated the perspectives of English as a Foreign Language (EFL) students on their experiences with group work (GW) in both online and offline environments. The results indicated that most students who participated in GW in both settings held a positive perception. Implementing a Collaborative Learning (CL) approach can enhance students’ self-confidence, motivation, engagement in a studentcentered environment, and sense of responsibility. However, some students reported negative experiences with online GW due to issues such as unstable internet connections, limited prior experience with GW, and unfamiliarity with relevant applications and software. Consequently, the findings of this study offer valuable …

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Mechanistic Study Of The Evan's Anti-Aldol Reaction, Aidan Hau Aug 2025

Mechanistic Study Of The Evan's Anti-Aldol Reaction, Aidan Hau

Summer Research Showcase

The Evans Aldol reaction can make a syn product with a boron, lithium, or titanium catalyst. The anti product is catalyzed by magnesium instead. Our goal is to understand the mechanism behind the formation of the anti product. We used WebMO to model what the lowest energy reaction pathways would be with a magnesium catalyst. We played with coordination to the magnesium and electron geometry to see if that would generate a low energy pathway that is likely to occur. We can use our information gathered to help determine the anti mechanism.

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Determination Of The Reaction Mechanism For The Tautomerization Of Tröger’S Base, Cole Schliep Aug 2025

Determination Of The Reaction Mechanism For The Tautomerization Of Tröger’S Base, Cole Schliep

Summer Research Showcase

Tröger’s base is a unique V-shaped, bicyclic, chiral molecule that has the flexibility to have derivatives added to its carbon backbone. This allows for Tröger’s base to be used in many material applications. This research focuses on the addition of a carbamoyl group(-CONEt2) to Tröger’s base that can form either an endo- or exo-isomeric form. The exo-derivative of Tröger’s base is shown to be the more stable species. Recent work has shown that the endo-derivative can be selectively produced by sequential proton transfer under highly-basic, cold conditions, through deprotonation followed by a protic quench. Prior research has predicted that this …

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Synthesis And Characterization Of Near-Infrared Fluorescent Dye Cy7-2 For Targeted Cancer Imaging, Eleanor Yerkin Aug 2025

Synthesis And Characterization Of Near-Infrared Fluorescent Dye Cy7-2 For Targeted Cancer Imaging, Eleanor Yerkin

Summer Research Showcase

The growing demand for real-time, precise, cancer diagnostics and treatment has driven the development of targeted near-infrared (NIR) fluorescent biosensors. Traditional visible-range fluorophores, such as Boron-dipyrromethene (BODIPY) dyes are well-known for their high quantum yields, photostability, biocompatibility, and sharp absorption and emission peaks, making them widely used in fluorescence imaging (Nisar and Sui). However, Cyanine dyes offer some advantages over visible-range dyes, such as deeper tissue penetration due to their near-infrared (NIR) absorption and emission, significantly reduced background autofluorescence, and improved signal-to- noise ratios in vivo (Zhang et al.). This project explores the synthesis and characterization of the NIR fluorescent …

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Advances In The Morris Observatory In Summer 2025, Mahathir Ahmed Mostafa Aug 2025

Advances In The Morris Observatory In Summer 2025, Mahathir Ahmed Mostafa

Summer Research Showcase

In Summer 2025, the Morris Observatory completed major upgrades to its Meade 16-inch telescope, improving both mechanical functionality and imaging workflows. Hardware enhancements included the installation of a precision focuser, providing finer and more stable focus control, and a flip mirror system, enabling rapid switching between eyepiece viewing and camera imaging without the need for realignment. Imaging and processing approaches were also refined, with systematic use of flats, darks, and lights to correct optical artifacts, sensor noise, and uneven field illumination. Computational methods, developed using Python and Astropy, automated calibration, stacking, and enhancement, increasing consistency and efficiency in image production. …

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Numerical Results Of New And Modified Heuristics For The Vertex Coloring Problem, Elliot Hanson Aug 2025

Numerical Results Of New And Modified Heuristics For The Vertex Coloring Problem, Elliot Hanson

Summer Research Showcase

The chromatic number, χ(G) of an undirected graph G=(V,E) is the minimum number of colors required to color its vertices so that no two adjacent vertices have the same color. Given a graph, G, finding its chromatic number is useful for solving scheduling problems and other combinatorial optimization problems. However, determining the chromatic number of a connected graph is NP-Hard, meaning there is no known polynomial time algorithm which solves it. Thus, we are interested in heuristic solutions which give approximations for the chromatic number in polynomial time. There are well-known heuristics for finding χ(G) for any graph G. …

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Expansion-Classification Prompt With “Thinking” Module For The Interpretation Of Highly Ambiguous Inputs, Chris Stewart Aug 2025

Expansion-Classification Prompt With “Thinking” Module For The Interpretation Of Highly Ambiguous Inputs, Chris Stewart

Defensive Publications Series

The technology described herein is directed to a method for accurately classifying user intent from highly ambiguous text strings. This can be used to classify online advertising deal names that require Special Category Data (SCD) compliance. As deal names inherently lack context, frequently use acronyms, and have minimal metadata associated with them, it is difficult to interpret the deal names for SCD relevance. This is addressed by using artificial intelligence (“AI”) models that can expand/interpret the deal names in a first phase and use the expansion/interpretation in a second phase to classify the deal name relevance for SCD purposes.

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Font Size Adjustment Based On Ambient Light And User Profile, Sahil Gupta Aug 2025

Font Size Adjustment Based On Ambient Light And User Profile, Sahil Gupta

Defensive Publications Series

Reading text on electronic device displays can be difficult in varying ambient light conditions, particularly for users with age-related vision changes. Current solutions require manual font size adjustments, which are static, cumbersome, and separate from automatic brightness controls. This disclosure describes a method for adjusting the font size on a display in response to changing conditions, without requiring explicit user interaction. For example, an ambient light sensor may measure surrounding light levels, and user-specific data, such as age and/or a vision quality rating, can be optionally provided. An algorithm uses these inputs to determine an appropriate font size in real …

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Annual And Seasonal Mean Air Temperature Trends And Future Projections Over The Nile Delta, Egypt, Amna S. Dabbous, Dina M. Hendy, Yasser M. El-Wakeel, Tarek M. El-Geziry Aug 2025

Annual And Seasonal Mean Air Temperature Trends And Future Projections Over The Nile Delta, Egypt, Amna S. Dabbous, Dina M. Hendy, Yasser M. El-Wakeel, Tarek M. El-Geziry

Blue Economy

The Mediterranean air temperature has steadily increased during the last few decades. This shift affects ecological ecosystems and human activity. This study examined longterm air temperature trends in Alexandria and Port Said, using monthly data from 1957 to 2022 to assess the impact of climate change on these coastal cities, being the two extremities of the Nile Delta. Temperature records were analyzed using the Mann- Kendall test, a robust non-parametric statistical method for detecting trends in climatic data, and future projections were evaluated through the CMIP5 climate models under various RCP scenarios. Considerable warming trends were seen in the air …

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The Future Of The Arab Media Industry In Utilizing Artificial Intelligence Technologies: A Foresight Study (2024 To 2034), Mohammedwesam Amer, Abdullah Mohammed Atbiqa Aug 2025

The Future Of The Arab Media Industry In Utilizing Artificial Intelligence Technologies: A Foresight Study (2024 To 2034), Mohammedwesam Amer, Abdullah Mohammed Atbiqa

Middle East Journal of Communication Studies

This study explores the future of the Arab media industry from 2024 to 2034 in light of the increasing integration of artificial intelligence (AI) technologies. It identifies key media sectors likely to be affected by AI—such as content creation, news production, editing, and audience engagement—and proposes strategies for effective implementation. The study employs a descriptive survey methodology grounded in the Unified Theory of Acceptance and Use of Technology (UTAUT). Data were collected via an electronic questionnaire from a purposive sample of 264 respondents across 18 Arab countries, including academic elites and media professionals working with Arab media institutions. Findings reveal …

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The Role Of Ai In Language Learning: Teachers' And Students' Experiences In Vocational High Schools, Cyntia Wahyu Khafidah, Ahmad Faruk Aug 2025

The Role Of Ai In Language Learning: Teachers' And Students' Experiences In Vocational High Schools, Cyntia Wahyu Khafidah, Ahmad Faruk

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to analyze the role of artificial intelligence (AI) in language learning in vocational high schools, focusing on the experiences of teachers and students. This study uses a qualitative approach with a case study method, where data are collected through observation and interviews. Vygotsky's constructivism theory is used as a basis for understanding how AI supports independent and interactive learning. The results show that AI improves students' speaking and listening skills through automated feedback and enables personalized learning. However, limited infrastructure and lack of training for teachers are major obstacles in implementing AI in the classroom. In addition, …

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Analisis Tingkat Adopsi Artificial Intelligence Di Universitas Terbuka Dalam Kurva Inovasi Teknologi, Thesa Kandaga, Sugilar Sugilar, Suci Nurhayati, Zahir Osman Aug 2025

Analisis Tingkat Adopsi Artificial Intelligence Di Universitas Terbuka Dalam Kurva Inovasi Teknologi, Thesa Kandaga, Sugilar Sugilar, Suci Nurhayati, Zahir Osman

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Penelitian ini mengevaluasi tingkat adopsi Artificial Intelligence (AI) di kalangan dosen Universitas Terbuka (UT) menggunakan pendekatan mix method dengan analisis deskriptif. Populasi penelitian meliputi seluruh dosen UT, dengan 172 responden yang dipilih berdasarkan kesediaan berpartisipasi. Mengacu pada teori Diffusion of Innovations dari Rogers (2003), dosen dikelompokkan dalam kategori Innovators, Early Adopters, Early Majority, Late Majority, dan Laggards berdasarkan skor adoption rate. Hasil menunjukkan mayoritas dosen UT berada dalam kategori Early Majority (37%) dan Late Majority (32%), menunjukkan adopsi yang moderat terhadap AI. Sebagian kecil dosen masuk dalam kategori Innovators (1%) dan Early Adopters (15%), sementara 16% berada dalam kategori Laggards. …

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Analisis Pembelajaran Aksara Jawa Melalui Permainan Misteri Huruf Dan Bunyi Pada Peserta Didik Kelas 3 Sekolah Dasar, Rizky Okta Wardani, Siti Fatimah Soenaryo, Beti Istanti Suwandayani Aug 2025

Analisis Pembelajaran Aksara Jawa Melalui Permainan Misteri Huruf Dan Bunyi Pada Peserta Didik Kelas 3 Sekolah Dasar, Rizky Okta Wardani, Siti Fatimah Soenaryo, Beti Istanti Suwandayani

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Tujuan penelitian adalah untuk menganalisis permainan misteri huruf dan bunyi dalam mengajarkan, memperkenalkan, dan memahami aksara jawa kepada peserta didik. Penggunaan permainan yang inovatif dan menarik menjadi salah satu upaya untuk membangkitkan kembali minat belajar aksara jawa, sekaligus memperkenalkan kekayaan budaya kepada peserta didik. Metode penelitian menggunakan metode kualitatif deskriptif, subyek penelitian peserta didik kelas 3 sekolah dasar, teknik pengumpulan data menurut alur Miles & Huberrman 1994: a. Pengumpulan data, b. Reduksi data, c. Penyajian data, d. Kesimpulan. Penelitian menunjukkan penerapan permainan misteri huruf dan bunyi membantu peserta didik dalam memahami dan mengenal bentuk 20 huruf aksara jawa. Penelitian ini …

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Penerapan Model Pembelajaran Kooperatif Tipe Talking Stick Untuk Meningkatkan Hasil Belajar Siswa Pada Pelajaran Ipas, Yusdin Bin M. Gagaramusu, Wildani Wildani, Rizal Rizal, Sisriawan Lapasere Aug 2025

Penerapan Model Pembelajaran Kooperatif Tipe Talking Stick Untuk Meningkatkan Hasil Belajar Siswa Pada Pelajaran Ipas, Yusdin Bin M. Gagaramusu, Wildani Wildani, Rizal Rizal, Sisriawan Lapasere

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Penelitian ini bertujuan untuk memberikan wawasan mengenai penerapan model pembelajaran kooperatif tipe talking stick sebagai upaya meningkatkan hasil belajar siswa pada mata pelajaran IPAS kelas IV SD Negeri 9 Mamboro. Jenis penelitian yang dilakukan adalah Penelitian Tindakan Kelas (Classroom Action Research) yang dikembangkan oleh Kemmis dan Mc Taggart yang terdiri dari empat tahapan, yaitu: (1) Perencanaan, (2) Tindakan, (3) Observasi, dan (4) Refleksi. Penelitian ini dilaksanakan di SD Negeri 9 Mamboro, pada tahun ajaran 2024/2025 dengan subjek penelitian berjumlah 23 siswa kelas IV. Dalam penelitian ini, teknik pengumpulan data meliputi tes dan non-tes. Hasil penelitian menunjukkan bahwa selama proses pembelajaran …

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U.S News & World Report 2025 Graduate Program Rankings, Unlv & Unr, Dre Boyd-Weatherly, Caitlin J. Saladino, William E. Brown Jr. Aug 2025

U.S News & World Report 2025 Graduate Program Rankings, Unlv & Unr, Dre Boyd-Weatherly, Caitlin J. Saladino, William E. Brown Jr.

Higher Education

This fact sheet presents 2025 graduate program rankings for the University of Nevada, Las Vegas (UNLV) and for the University of Nevada, Reno (UNR) based on the data published in spring 2025 by U.S. News & World Report. The graduate program categories reported include business, education, engineering, fine arts, law, medicine and health care, sciences and mathematics, and social sciences and humanities.

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The Sketches Of Infinite Data And Algorithms For Real-Time Data Insights, Vishnu S. Pendyala Aug 2025

The Sketches Of Infinite Data And Algorithms For Real-Time Data Insights, Vishnu S. Pendyala

Open Educational Resources

How are machine learning algorithms able to answer questions from any nook and corner of the World Wide Web? How are trending hashtags from the near infinite microblog posts, unique visitors and other distinct counts in the near infinite website traffic determined? How do blogging websites avoid recommending articles a user has previously read? In general, how can we answer complex queries about enormous data streams without storing them entirely, in real-time? The answer often lies in clever approximation algorithms and data "sketches" that capture essential properties using vastly reduced space. The relentless flow of data in modern systems indeed …

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Towards Scalable Schema Mapping Using Large Language Models, Christopher Buss, Mahdis Safari, Arash Termehchy, David Maier, Stefan Lee Aug 2025

Towards Scalable Schema Mapping Using Large Language Models, Christopher Buss, Mahdis Safari, Arash Termehchy, David Maier, Stefan Lee

Computer Science Faculty Publications and Presentations

The growing need to integrate information from many diverse sources poses significant scalability challenges for data integration systems. These systems often rely on manually written schema mappings, which are complex and costly to maintain. While recent advances suggest that large language models (LLMs) can assist in automating schema mapping, key challenges remain. We motivate future research in schema mapping generation by highlighting key challenges, presenting a competitive bidirectional schema matching pipeline, and exploring the limitations of current methods for generating more complex mappings.

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Usa V. Raphael Ross Aug 2025

Usa V. Raphael Ross

2025 Decisions

USDC for the Eastern District of Pennsylvania

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Designing Writers: A Self-Regulated Approach To Multimodal Composition In Teacher Preparation And Early Grades, Qi Si, Tracey S. Hodges, Vahid Mousavi Aug 2025

Designing Writers: A Self-Regulated Approach To Multimodal Composition In Teacher Preparation And Early Grades, Qi Si, Tracey S. Hodges, Vahid Mousavi

Teacher Education and Leadership Faculty Publications

Reading and writing in the 21st century have evolved from traditional text-based formats to multimodal literacy, integrating linguistic, visual, auditory, and spatial modes to enhance communication and comprehension. While multimodal reading has been widely studied, multimodal writing remains underexplored, despite its growing importance in K–12 education across disciplines. Multimodal composing demands advanced self-regulation as students navigate multiple digital tools and platforms. Self-regulated learning strategies, particularly the self-regulated strategy developmental model, offer a promising approach to support students in planning, monitoring, and revising multimodal compositions. However, a comprehensive framework linking self-regulation and multimodal composition is lacking. This article addresses this gap …

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Evaluating Adjustment And Proficiency Disparities In Virtual Reality, Mohammad Jahed Murad Sunny Aug 2025

Evaluating Adjustment And Proficiency Disparities In Virtual Reality, Mohammad Jahed Murad Sunny

Theses and Dissertations

The rapid integration of VR in various application domains necessitates a deeper understanding of how levels of user experience impact user performance and task efficiency. This study investigates the relationship between experience with VR, expertise in 3d computer gaming, and physiological skills across multiple performance metrics, such as task-completion time, task load, accuracy, manipulation speed, and related spatial requirements. In a comprehensive analysis of multiple levels of VR experience and 3d computer-game expertise, we identified key trends that indicate increased experience in both domains significantly enhances task efficiency while at the same time reduces perceived workload and improves task accuracy. …

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Exposure To Zinc Oxide Nanoparticles Reveals A Death Resistance Mechanism In Dictyostelium Discoideum, Zoya Nadeem Faruqui Aug 2025

Exposure To Zinc Oxide Nanoparticles Reveals A Death Resistance Mechanism In Dictyostelium Discoideum, Zoya Nadeem Faruqui

Theses and Dissertations

Zinc oxide nanoparticles (ZnO NPs) are very versatile due to their multifunctional properties including unique physicochemical and antimicrobial characteristics. They are widely utilized across various fields such as biomedical, industrial fields, environmental remediation, and agriculture. Therefore, their cytotoxic effects on biological systems necessitate a deeper understanding of the cellular responses to nanoparticle exposure. This project primarily investigates the impact of ZnO NPs on the model organism Dictyostelium discoideum AX4 (social amoeba) which has not been examined before unlike a vast variety of organisms in the literature. The cytotoxic effects of ZnO NPs on Dictyostelium discoideum AX4 cells are compared with …

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Tradition, Critque, And The Modern Moral Lingua Franca: A Lutheran Articulation Of Human Rights Language, Christian B. Dollar Aug 2025

Tradition, Critque, And The Modern Moral Lingua Franca: A Lutheran Articulation Of Human Rights Language, Christian B. Dollar

Doctor of Philosophy Dissertation

The language of subjective, individual rights has become the primary way of speaking about the rights and wrongs of human life together. Since the end of World War II, one subset of this language—that of human rights—has achieved a global influence. The various Christian traditions of the west have, in large part, adopted this language of human rights to articulate and supplement their assorted social teachings. Yet, the adoption of human rights language has been contested by a dedicated cadre of Roman Catholic and Protestant theologians concerned about the potentially anti-Christian implications inherent in the grammar of rights. Christian rights …

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Computer-Automated Systems And Methods For Using Language Models To Generate Text Based On Reading Errors, Scott Sosso, Siyu Chen, Ciara Figliuolo, Jack Mostow, Marlies Goes Aug 2025

Computer-Automated Systems And Methods For Using Language Models To Generate Text Based On Reading Errors, Scott Sosso, Siyu Chen, Ciara Figliuolo, Jack Mostow, Marlies Goes

AFIT Patents

A computer-implemented system and method generate personalized text based on statistics derived from input received from a user representing the user's attempts to decode graphemes into phonemes. Such statistics may be measured and recorded at the grapheme-phoneme level, and may include substitutions, insertions, deletions, and correct utterances of phonemes by the user when reading text. A language model may be trained based on characteristics of the user, such as the user's age and/or reading grade level, and the personalized text may be generated after such training of the language model. Generating the personalized text may include generating a text creation …

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Evaluation Of Fano Resonance In Silver Nanotriangles And Complementary Triangular Apertures For Enhanced Refractive Index Sensing, Nabila Islam Aug 2025

Evaluation Of Fano Resonance In Silver Nanotriangles And Complementary Triangular Apertures For Enhanced Refractive Index Sensing, Nabila Islam

Dissertations and Theses

This thesis presents a detailed investigation of plasmonic sensors based on silver (Ag) nanotriangles, focusing on the interaction of plasmonic mode with waveguide modes to achieve Fano resonance for enhanced refractive index sensitivity. For this purpose, Ag nanotriangles were chemically synthesized and were on indium tin oxide (ITO)-coated glass. The samples were illuminated with laser light of various wavelengths and polarization to excite surface plasmon in the nanotriangle. Observation and characterization of their plasmonic behavior was done experimentally using Photoemission Electron Microscopy (PEEM). Numerical simulations using the Finite Element Method (FEM) were performed that agreed with these experimental results and …

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Effect Of Bond Strength Variation And Ionizing Radiation On Mutations In Cytosine-Guanine Islands, Joshua Robert Bedwell, Yan Poniatovskyi, Vola Andrianarijaona Aug 2025

Effect Of Bond Strength Variation And Ionizing Radiation On Mutations In Cytosine-Guanine Islands, Joshua Robert Bedwell, Yan Poniatovskyi, Vola Andrianarijaona

Achieve

Ionizing radiation produces free electrons within cells which then ionizes DNA and has the potential to cause carcinogenic mutations. Cytosine-Guanine (CpG) islands are regions that are rich in cytosine and guanine bases and are common sites of single point mutations and strand breaks. In this study, density function theory (DFT) is used to calculate the potential energy of DNA nucleotide dimers varying bond lengths in five different ionized states. Crossing between two ionized states can be seen in the potential energy curves, indicating the possibility of natural transition between the two states. Potential energy curves are used to determine bond …

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Analyzing The Strength Of The Amine Bond Of Guanine Via Potential Curve Analysis: A Computational Approach, Yan Poniatovskyi, Joshua Robert Bedwell, Vola Andrianarijaona Aug 2025

Analyzing The Strength Of The Amine Bond Of Guanine Via Potential Curve Analysis: A Computational Approach, Yan Poniatovskyi, Joshua Robert Bedwell, Vola Andrianarijaona

Achieve

The deamination of guanine can be a cause of single point DNA mutations. In this study, the strength of the amine bond was examined using DFT and B3LYP to map out the bond’s potential curves under conditions of various charges being imposed on the molecule. Such an approach yielded a few potential curves that do not exhibit the expected behavior and rather, show crossings in potential energy curves. Discussions regarding the suspected causes of these unexpected behaviors are included in the poster presentation. The Mulliken charge analysis of guanine under these conditions is coherent with the proposition that the deamination …

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