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Full-Text Articles in Physical Sciences and Mathematics

New Topology Control Base On Ant Colony Algorithm In Optimization Of Wireless Sensor Network, Zana Azeez Kakarash, Sarkhel H.Taher Karim, Nawroz Fadhil Ahmed, Govar Abubakr Omar Apr 2021

New Topology Control Base On Ant Colony Algorithm In Optimization Of Wireless Sensor Network, Zana Azeez Kakarash, Sarkhel H.Taher Karim, Nawroz Fadhil Ahmed, Govar Abubakr Omar

Passer Journal

Wireless sensor networks (WSNs) have found great appeal and popularity among researchers, especially in the field of monitoring and surveillance tasks. However, it has become a challenging issue due to the need to balance different optimization criteria such as power consumption, packet loss rate, and network lifetime, and coverage. The novelty of this research discusses the applications, structures, challenges, and issues we face in designing WSNs. And proposed new Topology control mechanisms it will focus more on building a reliable and energy efficient network topology step by step through defining available amount of energy for each node within its cluster ...


Sustainability Impacts Of Building Energy Use Management, John Lattanze Feb 2021

Sustainability Impacts Of Building Energy Use Management, John Lattanze

Sustainability Research & Practice Seminar Presentations

No abstract provided.


About Some Problems Of Strength And Classical Criteria Of Fragile And Viscous Destruction, Shoolim Muzaffarovich Salimov Feb 2021

About Some Problems Of Strength And Classical Criteria Of Fragile And Viscous Destruction, Shoolim Muzaffarovich Salimov

Scientific Bulletin of Namangan State University

The study and prediction of the deformation properties of the materials studied in the work is possible on the basis of mathematical modeling of deformation and relaxation processes. In this article, we give a brief overview of the fundamental ideas of crack mechanics and the mechanics of diffuse damage


Residential Demand Side Management: Strategies For Increasing Electric Utility Profitability, Alexandra Rose Bennett Jan 2021

Residential Demand Side Management: Strategies For Increasing Electric Utility Profitability, Alexandra Rose Bennett

Walden Dissertations and Doctoral Studies

Some electric utility leaders lack effective strategies to reduce demand billing charges. Utility leaders are concerned with lowering demand billing charges, as failure to do so can negatively affect profitability. Guided by the operations management theory, the purpose of this qualitative multiple case study was to explore strategies that distribution electric utility managers use to reduce demand billing chargers from their power providers. The participants were three electric utility leaders working in the Midwest United States who used successful residential demand-side management (DSM) strategies. Data were collected using semistructured interviews and utility documents to address the research question. The collected ...


An Analysis Of Liquefied Petroleum Gas Adoption For Household Cooking In Nigeria, Saheed Olanrewaju Lasisi Jan 2021

An Analysis Of Liquefied Petroleum Gas Adoption For Household Cooking In Nigeria, Saheed Olanrewaju Lasisi

Walden Dissertations and Doctoral Studies

The Nigerian government established a domestic liquefied petroleum gas penetration program (DLPGPP) to support Nigerian households that still use traditional fuels, which are inefficient and hazardous for users while polluting and degrading the environment. Little is known about the relationships that exist among liquefied petroleum gas (LPG) accessibility, LPG affordability, and LPG adoption to guide DLPGPP implementation. Narrowing this gap was the purpose of this study using the general framework of consumer theory. The study's research questions addressed the effects of LPG affordability and LPG accessibility on LPG adoption for cooking in Nigeria’s households. A cross-sectional, correlational survey ...


West Chester's Energy Future, Will Williams Nov 2020

West Chester's Energy Future, Will Williams

Sustainability Research & Practice Seminar Presentations

No abstract provided.


Energy Demand And Economic Growth: Public Opinion And Mutual Exclusivity, Nicholas L. Silvis Oct 2020

Energy Demand And Economic Growth: Public Opinion And Mutual Exclusivity, Nicholas L. Silvis

Student Publications

The world is currently undergoing an energy transition from primarily fossil fuels to cleaner energy. The developing world is becoming more advanced, spawning relentless economic growth and an increase in energy consumption. Energy demand and economic growth are inextricably linked which poses a paradoxical question about future economic growth during a period of energy transition. Unfortunately, the transition requires large upfront costs with no guaranteed net benefit. A multitude of studies depict the impact of education, party identification, and age on how individuals perceive alternative energy. This study shows that views on governmental spending and party membership have a paradoxical ...


Biophysical And Stable Isotopic Profiles Of The Salmon Louse Lepeophtheirus Salmonis (Krøyer, 1837), Emma Taccardi Aug 2020

Biophysical And Stable Isotopic Profiles Of The Salmon Louse Lepeophtheirus Salmonis (Krøyer, 1837), Emma Taccardi

Electronic Theses and Dissertations

The salmon louse Lepeophtheirus salmonis is a parasitic copepod that infects wild and farmed salmonids throughout the northern hemisphere. L. salmonis represents the largest economic hurdle of the Atlantic salmon (Salmo salar) industry, with an estimated annual cost of nearly $1 billion globally due to production losses and anti-parasitic control measures. Salmon farming in Maine has existed for decades and is a critical economic driver, yet the region is underrepresented in global sea lice research. The aim of this work was to examine parasites in the context of animal trophic transfer and characterize physiological condition by quantifying the flow of ...


Investigating Transfer Of Energy Concepts Learned In Physics To Biology Contexts, Brittany Mureno, Eric Mckenzie May 2020

Investigating Transfer Of Energy Concepts Learned In Physics To Biology Contexts, Brittany Mureno, Eric Mckenzie

Scholars Week

Problem solving interviews were used to investigate student understanding of energy concepts in a biology course for preservice K-8 teachers. Interview subjects constructed an energy-based explanation for a biology scenario. Subjects had previously taken a physics course in which an energy-based model for interactions had been developed. Interviews were transcribed and analyzed to identify common themes in student reasoning. These themes describe discipline-specific understanding, but also cut across disciplines, providing insight into how learners make sense of energy as a unifying concept.


Flexible Box-Cox Transformation Model For Analyzing Energy Usage At Uconn, Yutong Chen May 2020

Flexible Box-Cox Transformation Model For Analyzing Energy Usage At Uconn, Yutong Chen

Honors Scholar Theses

The Box-Cox transformation is a way to transform non-normal data into more normally distributed data. However, when we fit linear regression models to transformed data, we cannot use the Akaike Information Criterion (AIC) directly to compare different models since the transformed data are no longer on the same scale. In this study, the Jacobian adjusted AIC is proposed to compare regression models on transformed data and to select an “optimal” value of the transformation parameter. Instead of using a single for the whole data, which is commonly used in the literature and in practice, we formulate a linear regression pattern ...


An Assessment Of Renewable Energy Technology Implementation In Storrs, Connecticut: Emissions Reduction And Feasibility Of A Microgrid System At Uconn, Sophie Macdonald May 2020

An Assessment Of Renewable Energy Technology Implementation In Storrs, Connecticut: Emissions Reduction And Feasibility Of A Microgrid System At Uconn, Sophie Macdonald

Honors Scholar Theses

The purpose of this project is to design a clean energy-sourced microgrid for UConn’s main campus that would reduce the university’s energy emissions while remaining within the geographic boundaries of viable UConn-owned land. Economic cost was not considered in this analysis; instead, emissions and space constraints were the optimized measures of value and feasibility. Sources of energy that were considered include photovoltaics (PV), wind turbines, hydrokinetic systems, and fuel cells. Energy storage capacity was included in the analysis as well. The overall system was optimized first by ignoring space constraints and for a minimum of 10% reduction from ...


Applying Cluster Analysis To Student Responses From Energy Surveys For Identification Of Commonalities In Their Understanding, Arianna Giguere May 2020

Applying Cluster Analysis To Student Responses From Energy Surveys For Identification Of Commonalities In Their Understanding, Arianna Giguere

Honors College

Energy is a complicated model that has been developed to describe matter to matter interactions. Since energy can be challenging to define, there are inconsistencies among even teachers and physicists in how they define the concept. It is no wonder that students themselves carry misconceptions and confusions. While it may be difficult to teach, an understanding of energy from a young age is essential for the future of technology, climate change, and scientific discoveries. Middle school students in Maine are required to learn about energy transformation, conservation, and forms, and from 2011-2018, researchers at the University of Maine administered multiple ...


College Of Natural Sciences, Forestry, And Agriculture_Eco 180 And 405 Reading Recommendations, Sharon Klein Apr 2020

College Of Natural Sciences, Forestry, And Agriculture_Eco 180 And 405 Reading Recommendations, Sharon Klein

College of Natural Sciences, Forestry, and Agriculture

Email from Sharon Klein, Associate Professor, School of Economics, University of Maine to the Provost Office describing Professor Klein's energy classes ECO 180 and 405, she lead an optional hour-long Zoom discussion about the topic "What does the coronavirus mean for sustainable energy?" during the week of March 30. Includes list of the recommended articles students should read in advance of the discussion.


Agenda, Shubha Tewari Jan 2020

Agenda, Shubha Tewari

Science and Engineering Saturday Seminars

Abstracts for six Science and Engineering Saturday Seminars.


Dual-Axis Solar Tracker, Bryan Kennedy Jan 2020

Dual-Axis Solar Tracker, Bryan Kennedy

All Undergraduate Projects

Renewable energies, and fuels that are not fossil fuel-based, are one of the prolific topics of debate in modern society. With climate change now becoming a primary focus for scientists and innovators of today, one of the areas for the largest amount of potential and growth is that of the capturing and utilization of Solar Energy. This method involves using a mechanical system to track the progression of the sun as it traverses the sky throughout the day. A dual-axis solar tracker such as the one designed and built for this project, can follow the sun both azimuthally and in ...


Ultrahigh Energy Storage Properties In (Sr0.7bi0.2)Tio3-Bi(Mg0.5zr0.5)O3 Lead-Free Ceramics And Potential For High-Temperature Capacitors, Xi Kong, Letao Yang, Zhenxiang Cheng, Shujun Zhang Jan 2020

Ultrahigh Energy Storage Properties In (Sr0.7bi0.2)Tio3-Bi(Mg0.5zr0.5)O3 Lead-Free Ceramics And Potential For High-Temperature Capacitors, Xi Kong, Letao Yang, Zhenxiang Cheng, Shujun Zhang

Australian Institute for Innovative Materials - Papers

2020 by the authors. Due to the enhanced demand for numerous electrical energy storage applications, including applications at elevated temperatures, dielectric capacitors with optimized energy storage properties have attracted extensive attention. In this study, a series of lead-free strontium bismuth titanate based relaxor ferroelectric ceramics have been successfully synthesized by high temperature solid-state reaction. The ultrahigh recoverable energy storage density of 4.2 J/cm3 under 380 kV/cm, with the high efficiency of 88%, was obtained in the sample with x = 0.06. Of particular importance is that this ceramic composition exhibits excellent energy storage performance over a wide ...


Effectively Managing Energy Costs In The Resort Industry, Justin Whitesides Jan 2020

Effectively Managing Energy Costs In The Resort Industry, Justin Whitesides

Walden Dissertations and Doctoral Studies

Hawaii's commercial consumers pay the highest electricity rate in the United States;these costs are expected to rise 3-3.5% in 2021. Management in the Hawaiian resort industry that lacks adequate knowledge of controlling these rising costs is at a competitive disadvantage. Utilizing the diffusion of innovation theory, the purpose of this qualitative case study was to explore strategies used in the resort industry to control energy costs. The participants comprised of 10 energy management professionals with successful experience managing energy consumption in the resort industry. Data were collected through telephone interviews, archival documentation, and field notes. Using Yin ...


Row Spacing Effects On Biomass Components And Accumulated Energy In Elymus Sibiricus L., Jinping Liu, Minghong You Dec 2019

Row Spacing Effects On Biomass Components And Accumulated Energy In Elymus Sibiricus L., Jinping Liu, Minghong You

International Grassland Congress Proceedings

Elymus sibiricus L. is widely distributed in the eastern Tibetan Plateau of China. Current research on E. sibiricus mainly focuses on resource assessment, breeding, cultivation and dynamics of forage yield. Little is known about the effects of row spacing on the biomass components and accumulated energy of E. sibiricus. We conducted a study to determine the effects of row spacing on biomass components and accumulated energy in E. sibiricus. These data are important to optimize forage and seed production of E. sibiricus, and can assist in developing animal husbandry, structurally adjusting the agricultural industry and protecting the environment.


The Economics Of Residential Solar Panels: Comparing Tiered And Time Of Use Plans, Prashanth Nyer, Candace Ybarra, Jack B. Broughton Dec 2019

The Economics Of Residential Solar Panels: Comparing Tiered And Time Of Use Plans, Prashanth Nyer, Candace Ybarra, Jack B. Broughton

Business Faculty Articles and Research

This case study uses data from a Southern California Edison residential customer on a grandfathered tiered rate plan to investigate 1) whether it is economically beneficial for the customer to switch from a tiered-rate plan to a Time-of-Use (TOU) plan, 2) whether going solar now makes financial sense for new solar customers, 3) what level of usage offset (the percentage of the customer’s annual electricity consumption that is provided by the solar panels) would result in the maximum financial benefit for the customer under each of the many TOU plans, and 4) whether solar customers on TOU plans can ...


Beam Asymmetry Σ For The Photoproduction Of Η And Ή Mesons At Eγ = 8.8gev, S. Adhikari, A. Ali, M. J. Amaryan, A. Austregesilo, F. Barbosa, J. Barlow, A. Barnes, E. Barriga, R. Barsotti, T. D. Beattie, V. V. Berdnikov, T. Black, N. Wickramaarachchi, B. Zihlmann, The Gluex Collaboration Dec 2019

Beam Asymmetry Σ For The Photoproduction Of Η And Ή Mesons At Eγ = 8.8gev, S. Adhikari, A. Ali, M. J. Amaryan, A. Austregesilo, F. Barbosa, J. Barlow, A. Barnes, E. Barriga, R. Barsotti, T. D. Beattie, V. V. Berdnikov, T. Black, N. Wickramaarachchi, B. Zihlmann, The Gluex Collaboration

Physics Faculty Publications

We report on the measurement of the beam asymmetry Σ for the reactions →γp→pη and →γp→pη′ from the GlueX experiment using an 8.2–8.8-GeV linearly polarized tagged photon beam incident on a liquid hydrogen target in Hall D at Jefferson Laboratory. These measurements are made as a function of momentum transfer −t with significantly higher statistical precision than our earlier η measurements and are the first measurements of η′ in this energy range. We compare the results to theoretical predictions based on t-channel quasiparticle exchange. We also compare the ratio of Ση to Ση ...


Tools For Prescreening The Most Active Sites On Ir And Rh Clusters Toward C−H Bond Cleavage Of Ethane: Nbo Charges And Wiberg Bond Indexes, Yingbin Ge, Anna Le, Gregory J. Marquino, Phuc Q. Nguyen, Kollin Trujillo, Morgan Schimelfenig, Ashley Noble Oct 2019

Tools For Prescreening The Most Active Sites On Ir And Rh Clusters Toward C−H Bond Cleavage Of Ethane: Nbo Charges And Wiberg Bond Indexes, Yingbin Ge, Anna Le, Gregory J. Marquino, Phuc Q. Nguyen, Kollin Trujillo, Morgan Schimelfenig, Ashley Noble

All Faculty Scholarship for the College of the Sciences

B3LYP calculations were carried out to study the insertion of iridium (Ir) and rhodium (Rh) clusters into a C−H bond of ethane, which is often the ratelimiting step of the catalytic cycle of oxidative dehydrogenation of ethane. Our previous research on Ir catalysis correlates the diffusivity of the lowest unoccupied molecular orbital of the Ir clusters and the relative activities of the various catalytic sites. The drawback of this research is that the molecular orbital visualization is qualitative rather than quantitative. Therefore, in this study on C−H bond activation by the Ir and Rh clusters, we conducted analyses ...


Software-Defined Infrastructure For Iot-Based Energy Systems, Stephen Lee Oct 2019

Software-Defined Infrastructure For Iot-Based Energy Systems, Stephen Lee

Doctoral Dissertations

Internet of Things (IoT) devices are becoming an essential part of our everyday lives. These physical devices are connected to the internet and can measure or control the environment around us. Further, IoT devices are increasingly being used to monitor buildings, farms, health, and transportation. As these connected devices become more pervasive, these devices will generate vast amounts of data that can be used to gain insights and build intelligence into the system. At the same time, large-scale deployment of these devices will raise new challenges in efficiently managing and controlling them.

In this thesis, I argue that the IoT ...


Managing The National Landscape: Opportunities And Challenges, Martin J. Pasqualetti Oct 2019

Managing The National Landscape: Opportunities And Challenges, Martin J. Pasqualetti

Visual Resource Stewardship Conference

This plenary presentation summarized the principal landscape challenges and opportunities that accompany the human need for energy. Drawing from 50 years’ examining what I call “energy landscapes,” this presentation focused on land use conflicts resulting during the development of four types of renewable energy (solar, wind, geothermal, hydro), fossil fuels (mainly coal), and nuclear power (particularly siting of waste repositories and the decommissioning of generating stations). Many of the challenges derive from inherent resource characteristics, some from differences to cultural mores and histories, varying public perceptions of risk and fairness, demographic patterns, as well as jurisdictional and political differences. Many ...


Nutrition At The Crossroads: Food At The Intersection Of Environmental, Economic, And Social Sustainability, Kurt A. Rosentrater, Laetitia Palmade, Elif Kongar Oct 2019

Nutrition At The Crossroads: Food At The Intersection Of Environmental, Economic, And Social Sustainability, Kurt A. Rosentrater, Laetitia Palmade, Elif Kongar

Agricultural and Biosystems Engineering Publications

Societies around the world are at a critical juncture. As the planetary population grows, there are increasing demands for expanding available food, more nutritious and healthy foods, and contemporaneously the need for greater efficiencies and decreased impacts upon the environment.

The sustainability of food production systems is a complex issue that requires a global and multidisciplinary approach, combining not only agronomy, ecology, nutrition, epidemiology, processing, energy use, but also marketing and sociology. It is within this context that this special issue aims to illustrate, through review articles, case studies, as well as modeling and simulation studies, some means of understanding ...


Our Energy Future, Fall/Winter 2007, Issue 15 Sep 2019

Our Energy Future, Fall/Winter 2007, Issue 15

Sustain Magazine

No abstract provided.


Unconventional Energy, Fall/Winter 2015, Issue 31 Sep 2019

Unconventional Energy, Fall/Winter 2015, Issue 31

Sustain Magazine

No abstract provided.


Forecasting Localized Weather-Based Photovoltaic Energy Production, Kevin Chang, Afreen Siddiqui, Robert Slater Aug 2019

Forecasting Localized Weather-Based Photovoltaic Energy Production, Kevin Chang, Afreen Siddiqui, Robert Slater

SMU Data Science Review

Photovoltaic (PV) power system performance can vary from nominal specifications when put in application, making it difficult to accurately estimate real power generation at a localized level. As the usage and efficiency of PV systems has increased in recent years, the amount of power contributed to the national power grid from solar irradiation has also increased significantly. However, solar power installations are subject to variances in efficiency and output, driven by differences in system size, local weather, and atmospheric condition changes. With a significant install base in today's world, combined with extensive solar irradiance and meteorological data, the variables ...


Applied Symmetry For Crystal Structure Prediction, Scott William Fredericks Aug 2019

Applied Symmetry For Crystal Structure Prediction, Scott William Fredericks

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis presents an original open-source Python package called PyXtal (pronounced "pi-crystal") that generates random symmetric crystal structures for use in crystal structure prediction (CSP). The primary advantage of PyXtal over existing structure generation tools is its unique symmetrization method. For molecular structures, PyXtal uses an original algorithm to determine the compatibility of molecular point group symmetry with Wyckoff site symmetry. This allows the molecules in generated structures to occupy special Wyckoff positions without breaking the structure's symmetry. This is a new feature which increases the space of search-able structures and in turn improves CSP performance.

It is shown ...


Enabling Electric Storage Participation In Wholesale Markets: An Analysis Of Ferc Order No. 841, Glenn A. Smith May 2019

Enabling Electric Storage Participation In Wholesale Markets: An Analysis Of Ferc Order No. 841, Glenn A. Smith

Master of Science in Energy Systems Management

This study has been performed to understand the potential impact that the Federal Energy Regulatory Commission’s (FERC) Order No. 841 will have on the adoption of energy storage resources (ESR). This analysis looked at: (1) the Order’s requirements, (2) FERC’s exercise of its authorized jurisdiction within the Order, and (3) actions taken by the Regional Transmission Organizations (RTO), Independent System Operators (ISO) and FERC to demonstrate compliance with the Order’s requirements:

Order No. 841 utilizes a participation model to ensure ESR’s are able to participate in wholesale electricity markets to an extent that is reflective ...


Enabling Electric Storage Participation In Wholesale Markets: An Analysis Of Ferc Order No. 841, Glenn A. Smith May 2019

Enabling Electric Storage Participation In Wholesale Markets: An Analysis Of Ferc Order No. 841, Glenn A. Smith

Master's Projects and Capstones

This study has been performed to understand the potential impact that the Federal Energy Regulatory Commission’s (FERC) Order No. 841 will have on the adoption of energy storage resources (ESR). This analysis looked at: (1) the Order’s requirements, (2) FERC’s exercise of its authorized jurisdiction within the Order, and (3) actions taken by the Regional Transmission Organizations (RTO), Independent System Operators (ISO) and FERC to demonstrate compliance with the Order’s requirements:

Order No. 841 utilizes a participation model to ensure ESR’s are able to participate in wholesale electricity markets to an extent that is reflective ...