Physical Sciences and Mathematics Commons^™

Advanced Topics In Machine Learning Dsp 566, Harrison Dekker

Collection Development Reports and Documents

No abstract provided.

Introduction To Statistical Computing Dsp 565, Harrison Dekker

Collection Development Reports and Documents

No abstract provided.

Applications Of Data Science In Biological Science Dsp 569, Harrison Dekker

Collection Development Reports and Documents

No abstract provided.

Differential Privacy In Privacy-Preserving Big Data And Learning: Challenge And Opportunity, Honglu Jiang, Yifeng Gao, S. M. Sarwar, Luis Garza Perez, Mahmudul Robin

Computer Science Faculty Publications and Presentations

Differential privacy (DP) has become the de facto standard of privacy preservation due to its strong protection and sound mathematical foundation, which is widely adopted in different applications such as big data analysis, graph data process, machine learning, deep learning, and federated learning. Although DP has become an active and influential area, it is not the best remedy for all privacy problems in different scenarios. Moreover, there are also some misunderstanding, misuse, and great challenges of DP in specific applications. In this paper, we point out a series of limits and open challenges of corresponding research areas. Besides, we offer …

Laws Of Nature As Constraints, Emily Adlam

Mathematics, Physics, and Computer Science Faculty Articles and Research

The laws of nature have come a long way since the time of Newton: quantum mechanics and relativity have given us good reasons to take seriously the possibility of laws which may be non-local, atemporal, ‘all-at-once,’ retrocausal, or in some other way not well-suited to the standard dynamical time evolution paradigm. Laws of this kind can be accommodated within a Humean approach to lawhood, but many extant non-Humean approaches face significant challenges when we try to apply them to laws outside the time evolution picture. Thus for proponents of non-Humean approaches to lawhood there is a clear need for a …

Mathematical Foundations For Data Science Ams/Dsp 563, Harrison Dekker

Collection Development Reports and Documents

No abstract provided.

Advanced Database Concepts, Cloud Computing And Big Data Dsp 567, Harrison Dekker

Collection Development Reports and Documents

No abstract provided.

Data Science For Business Dsp 568, Harrison Dekker

Collection Development Reports and Documents

No abstract provided.

Revised Lead And Arsenic Enrichment Study, Environmental Standards, Inc., Ramboll, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Feedback Interactions Between The Ionosphere And Magnetosphere At Middle Latitude, Mergen Alimaganbetov, Anatoly Streltsov

Publications

Observations show that magnetic pulsations with frequencies around 1 mHz are frequently detected simultaneously at different latitudes on the ground, in the inner magnetosphere, and in the solar wind. The coupling between oscillations in the dynamic pressure or magnetic field carried by the solar wind and the ULF waves detected on the ground at high latitudes has been suggested in several studies. We present results from a numerical study of ultra-low-frequency waves detected by the ground magnetometers at middle latitudes during substorm. We investigate the hypothesis that these waves are generated by the ionospheric feedback instability driven by the large-scale …

Chlorine Taste Threshold And Acceptability As A Water Disinfectant Among Indigenous Ngäbe And Non-Indigenous In Rural Panama, Ashley Osler

USF Tampa Graduate Theses and Dissertations

More than two billion people globally still lack access to safely managed drinking water (WHO & UNICEF, 2021). Although gains in access to water service over the past two decades have been large, universal access to safe and affordable drinking water (SDG 6, target 6.1) is not on track to be achieved. In Panama, safely managed drinking water access has not been measured. However, the data on basic water access illustrates the large disparities between rural and urban areas of Panama. While 98% of urban Panamanian households have basic access to water, only 86% of rural Panamanian households, and 54% …

Innovative Approaches To Analysing Carbon Sequestration As A Mitigation Strategy In Tropical Pasture Landscapes In Two Emblematic Contexts, The Amazon And The West African Sahel, V. Blanfort, R. Pocard-Chapuis, J. Vayssières, M. Vignes, M. H. Assouma, B. Hubert, A. Ickowicz, S. Fontaine

IGC Proceedings (1993-2023)

The relationship between ruminant production systems and climate change is complex. As a major contributor to greenhouse gas (GHG) emissions, the sector has been the subject of considerable controversy, with particularly severe criticism in the 2000s. However, ten years ago, the attitude towards grazing lands began to change. Their efficient use of non-renewable energy and their contribution to carbon (C) sequestration were considered as key factors in the new environmental challenge. The reality of this mitigation potential was recently called into question once again in the global agriculture and climate change debate, including that of sequestration in the soil where …

Elevated Co2 And Extreme Climatic Events Modify Nitrogen Content And Ruminal Protein Digestion Of Temperate Grassland, V. Niderkorn, C. Picon-Cochard

IGC Proceedings (1993-2023)

This study was aimed at analyzing changes in nitrogen (N) content and in vitro protein rumen digestion of an upland grassland exposed to climate changes in controlled conditions. Monoliths of grassland were inserted in 12 macrocosms in which climatic conditions for the 2050s were simulated (i.e., +2.3°C and 33 mm less precipitation compared to the current climatic conditions). Six of them were subjected to ambient CO₂ (390 ppm) while the other six were subjected to elevated CO₂ (520 ppm). After four months, an extreme climatic event (ECE) consisting of four weeks of reducted precipitation (-50%) followed by two …

Effects Of Climate Variability On Wild Edible Plant Products: A Coping Strategy Applied By Pastoralists Of Northern Kenya, A. W. Kagunyu, J. W. Wanjohi

IGC Proceedings (1993-2023)

Drought which is a manifestation of climate variability has become a perennial problem in Kenya with chronic vulnerability being concentrated in Arid and Semi-Arid lands (ASALs). Traditionally, pastoralists have used wild edible plant products namely; fruits, vegetables and seeds as a coping strategy while faced by climate related calamities. However, recent studies have shown that pastoralists’ traditional coping strategies have become weak as a result of recurrent droughts. The overall objective of this study was to investigate the effects of climate variability on wild edible plant products. This study applied; household interviews (n=400), focus group discussions and key informant interviews …

Drought Mitigation In Bundelkahand Grassland Ecosystem For Improving Livelihood Of Farming Community-A Case Study, N. S. Pasricha, P. K. Ghosh

IGC Proceedings (1993-2023)

Bundelkhand grassland ecosystem (23º20´ and 26°20´N latitude and 78°20´ and 81°40´E longitude) is an undulating rain fed region (annual rain fall, 768-1087 mm) spread over an area of 7.08 m ha in central India in the states of Madhya Pradesh and Uttar Pradesh. This region has to support 16 million human and 8.5 million animal populations. Area is prone to surface run off losses, severe soil erosion and increasingly more drought events, leading to only mono-cropping. Lively-hood of the people, which is mainly the live-stock rearing and marginal agriculture, is at stake. In-situ conservation of rain water, forage management, …

Auxin/Cytokinin Antagonistic Control Of The Shoot/Root Growth Ratio And Its Relevance For Adaptation To Drought And Nutrient Deficiency Stresses, Jasmina Kurepa, Jan A. Smalle

Plant and Soil Sciences Faculty Publications

The hormones auxin and cytokinin regulate numerous aspects of plant development and often act as an antagonistic hormone pair. One of the more striking examples of the auxin/cytokinin antagonism involves regulation of the shoot/root growth ratio in which cytokinin promotes shoot and inhibits root growth, whereas auxin does the opposite. Control of the shoot/root growth ratio is essential for the survival of terrestrial plants because it allows growth adaptations to water and mineral nutrient availability in the soil. Because a decrease in shoot growth combined with an increase in root growth leads to survival under drought stress and nutrient limiting …

Use Of Mrms Mosaics To Analyze The Frequency Of Pop-Up Windstorms, Lawrence Carey, Eliana Globus

Summer Community of Scholars (RCEU and HCR) Project Proposals

No abstract provided.

Invisible Trash: Emerging Contaminants In Streams And Rivers, Megan Fork

Sustainability Research & Practice Seminar Presentations

Professor Megan Fork, Biology - Invisible Trash: Emerging Contaminants in Streams and Rivers

The Castle Rock And Ironside Mountain Calderas, Eastern Oregon, Usa: Adjacent Venting Sites Of Two Dinner Creek Tuff Units—The Most Widespread Tuffs Associated With Columbia River Flood Basalt Volcanism, Matthew Cruz, Martin J. Streck

Geology Faculty Publications and Presentations

The Dinner Creek Tuff is an important unit of mid-Miocene rhyolite volcanism contemporaneous to flood basalts of the Columbia River magmatic province. Field mapping along with analytical data of tuff samples identify two calderas, the Castle Rock and Ironside Mountain calderas, as the venting sites of two widespread ignimbrites of the Dinner Creek Tuff. Both calderas lie within the area of the proposed general storage sites of main-phase Columbia River Basalt magmas. The Castle Rock caldera formed during the eruption of the 16.16 Ma Dinner Creek Tuff unit 1. The northwestern boundary of the caldera is roughly defined by the …

Development And Evaluation Of A Survey To Measure Student Engagement At The Activity Level In General Chemistry, Nicole Naibert, Jack Barbera

Chemistry Faculty Publications and Presentations

Student engagement is an important consideration when incorporating active learning activities into a classroom. To facilitate the large-scale assessment of students’ engagement in activities, a survey measure must first be developed and evaluated. Therefore, the goal of this study was to create a self-report measure of student engagement for use with active learning activities in general chemistry classes. The Activity Engagement Survey (AcES) was modified from an existing survey of engagement of middle and high school science students that contained behavioral, cognitive, emotional, and social engagement items. Multiple rounds of response process interviews and factor analyses were used to modify …

O-Sulfonamidophenol Ligands And Derivatives For F-Element Sensing, Complexation, And Extraction From Alkaline High-Level Waste, Oluwaseun William Adedoyin

FIU Electronic Theses and Dissertations

The accumulated (>100 Mgal) alkaline high-level waste (HLW), which is a legacy of nuclear weapons manufacturing during the cold war era, is an issue of environmental concern that has presented reprocessing challenges, due to its complex physicochemical properties and the presence of ¹³⁷Cs, ⁹⁰Sr, and long-lived actinides.

This study is focused on o-sulfonamidophenol derivatives bearing electron-rich O- and N- donor sites (when deprotonated in alkaline conditions) for effective complexation, sensing, and extraction of f-elements from highly alkaline solutions. Using Ln(III) as experimental surrogates for An(III), a family of o-sulfonamidophenol ligands (L1H₂ – L4H_{2 …}

Exploring Student Perceptions Of Behavioral, Cognitive, And Emotional Engagement At The Activity Level In General Chemistry, Nicole Naibert, Elizabeth Vaughan, Kylee M. Brevick, Jack Barbera

Chemistry Faculty Publications and Presentations

Although active learning strategies are being incorporated into many higher-education STEM courses, not all students benefit from these activities to the same extent. As these types of activities are designed to engage students in their learning, differences in student engagement may explain some of the differences in learning outcomes. However, before student engagement in active learning activities can be meaningfully measured using a self-report survey, it is important to evaluate if students perceive engagement similarly to the literature definitions on which these measures are based. Therefore, this study sought to explore students’ perceptions of the behavioral, cognitive, and emotional dimensions …

Measurement Of The Nucleon F N2 / F P2 Tructure Function Ratio By The Jefferson Lab Marathon Tritium/Helium-3 Deep Inelastic Scattering Experiment, D. Abrams, H. Albataineh, B. S. Aljawrneh, S. Alsalmi, D. Androic, K. Aniol, W. Armstrong, J. Arrington, H. Atac, T. Averett, C. Ayerbe Gayoso, X. Bai, J. Bane, S. Barcus, A. Beck, V. Bellini, H. Bhatt, D. Bhetuwal, D. Biswas, D. Blyth, Roberto Petti, Et. Al.

Faculty Publications

The ratio of the nucleon F₂ structure functions, F ⁿ₂ / F ^p₂ is determined by the MARATHON experiment from measurements of deep inelastic scattering of electrons from ³H and ³He nuclei. The experiment was performed in the Hall A Facility of Jefferson Lab using two high-resolution spectrometers for electron detection, and a cryogenic target system which included a low-activity tritium cell. The data analysis used a novel technique exploiting the mirror symmetry of the two nuclei, which essentially eliminates many theoretical uncertainties in the extraction of the ratio. The results, which cover the Bjorken …

Diet Quality And Dietary Inflammatory Index Score Among Women’S Cancer Survivors, Sibylle Kranz, Faten Hasan, Erin Kennedy, Jamie Zoellner, Kristin A. Guertin, Nitin Shivappa Mbbs, Mph, Ph.D., James R. Hébert, Roger Anderson, Wendy Cohn

Faculty Publications

The purpose of this study was to investigate Healthy Eating Index 2015 (HEI-2015) and Energy-Adjusted Dietary Inflammatory Index (E-DIITM) scores in women's cancer survivors and to examine socio-economic (SES) characteristics associated with these two diet indices. In this cross-sectional study, survivors of women's cancers completed a demographic questionnaire and up to three 24-h dietary recalls. HEI-2015 and E-DII scores were calculated from average intakes. One-way ANOVA was used to examine the association of various demographic factors on HEI-2015 and E-DII scores. Pearson Correlation was used to calculate the correlation between the two scores. The average HEI-2015 score was 55.0 +/- …

Considering Natural Baselines When Calculating Livestock Impacts Point To A Negligible Role Of Grass-Fed Livestock Systems In Climate Change, P. Manzano, S. R. White

IGC Proceedings (1993-2023)

The use of baselines is common in a variety of academic disciplines, including environmental science, but they are subjected to relativity depending on the geographical or historical reference considered. Such considerations are illustrated by how invasive species are evaluated or what reference baselines are considered in biodiversity assessments.

The measurement of livestock effects on climate change has, however, disregarded the use of baselines. Current methodology is based exclusively on greenhouse gas emissions by individual animals, without putting them in their ecological context. As a consequence, current analyses of livestock impacts put grass-fed ruminant systems in the spotlight, because of their …

Comparative Soil Organic Carbon Dynamics In Tropical And Subtropical Grassland Ecosystems, N. S. Pasricha, P. K. Ghosh

IGC Proceedings (1993-2023)

Grassland ecosystems play significant role in mitigating the climate change by sequestering atmospheric CO₂. One fifth of the total terrestrial C is stored in the root zone of grasslands as soil organic carbon. However, because of lack of proper management, overgrazing, and conversion to crop lands, these grasslands are becoming a source of CO₂ emissions. It has been observed that in Imperata grasslands of Northeast India, a third of total C captured annually is lost though CO₂ emissions. In the absence of intensified grazing and burning, these grasslands exhibit significantly high capacity to store SOC stocks. …

Climate Change Threats To Semi-Arid Transhumance Grazing Systems: Proposals For Adaptation In Cabo Verde, J. F. Castro, S. Tavares, M. Castro

IGC Proceedings (1993-2023)

Global warming has changed the rainfall regime in the Sahelian region, endangering and widespread poverty and chronic famines in Cape Verde, where rural communities' well-being and food security depend on rainy agriculture. Local responses to rainfall new patterns and scarcity have been livestock reduction with significant revenue losses. Together with dry mist occurrences, these environmental constraints demand to define priority actions to adapt and mitigate climate change's direct impacts. According to fifty household inquiries, this work explains the transhumant grazing practices on a semi-arid plateau in Tarrafal (Santiago, Cabo Verde), prospecting adaptation alternatives for sustainability. We related grazing patterns and …

Wild Red Deer Benefit The Conservation Of European Semi-Natural Open Habitats, F. Riesch, Bettina Tonn, Marcus Meißner, Sven Herzog, Niko Balkenhol, J. Isselstein

IGC Proceedings (1993-2023)

Traditional land use practices have shaped European landscapes for millennia. Agricultural intensification and declining popularity of pastoral farming in the past century have resulted in a tremendous loss of extensively used open landscapes and associated biodiversity. Today, conservation management needs to prevent secondary succession of many open habitats. Large or inaccessible target areas unsuitable for conventional conservation measures might benefit from grazing by wild herbivores, which do not require fencing nor regular welfare monitoring. In a military training area in Germany, we studied the quantitative and qualitative effects of wild red deer in two protected open habitat types (lowland hay …

Session 13: On Statistical Estimates Of The Inverted Kumaraswamy Distribution Under Adaptive Type-I Progressive Hybrid Censoring, Qingqing Li, Yuhlong Lio

SDSU Data Science Symposium

The probability distribution modeling is investigated via maximum likelihood estimation method based on adaptive type-I progressively hybrid censored samples from the inverted Kumaraswamy distribution. The point estimates of model parameters, reliability, hazard rate and quantile are obtained and confidence intervals are also developed by using asymptotic distribution as well as bootstrap method. Monte Carlo simulation has been performed to evaluate the accuracy of estimations. Finally, a real data set is given for the application illustration.

An Alpha-Based Prescreening Methodology For A Common But Unknown Source Likelihood Ratio With Different Subpopulation Structures, Dylan Borchert, Semhar Michael, Christopher Saunders, Andrew Simpson

SDSU Data Science Symposium

Prescreening is a commonly used methodology in which the forensic examiner includes sources from the background population that meet a certain degree of similarity to the given piece of evidence. The goal of prescreening is to find the sources closest to the given piece of evidence in an alternative source population for further analysis. This paper discusses the behavior of an $\alpha-$based prescreening methodology in the form of a Hotelling $T^2$ test on the background population for a common but unknown source likelihood ratio. An extensive simulation study with synthetic and real data were conducted. We find that prescreening helps …