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Articles 17821 - 17850 of 302466
Full-Text Articles in Physical Sciences and Mathematics
Microbiology For Earth Scientists, Matthew F. Kirk
Microbiology For Earth Scientists, Matthew F. Kirk
NPP eBooks
Microorganisms are the most abundant form of life on Earth and in recent decades it has become increasingly clear that their collective activities are one of the dominant forces shaping the Earth.
This book provides earth scientists with an introduction to microbiology and a look at the ways microorganisms are important to their area of expertise. The first part of this book summarizes some basic information about microorganisms, including a discussion of their diversity, physical properties, and metabolisms. From there, the second and third portions of the book are organized around the two-way interactions between microorganisms and their environments. The …
On Prime Labelings Of Uniform Cycle Snake Graphs, M. A. Ollis
On Prime Labelings Of Uniform Cycle Snake Graphs, M. A. Ollis
Emerson Authors, Researchers, & Creators
A reseaech paper in graph theory, a subfield of math. At the time of the research Agam Bedi and Samiksha Ramesh were undergraduate students at Emerson College and the work was completed as part of the SOC320 Research Co-Curricular in the summer of 2022. The work has a Creative Commons BY-NC licence.
Go Green With Ecosia: The Search Engine With A Sustainable Business Model, James Thibeault
Go Green With Ecosia: The Search Engine With A Sustainable Business Model, James Thibeault
Library Publications
Ecosia, a non-profit search engine, is not only a thriving business but is also directly responsible for planting over 185 million trees. Focusing on sustainability and social responsibility, Ecosia demonstrates how business models can positively impact the environment.
Digital Nudges: An Investigation Of Both Consumer And Designer Perspectives, Ja-Naé Duane
Digital Nudges: An Investigation Of Both Consumer And Designer Perspectives, Ja-Naé Duane
2023
This dissertation explores how knowledge of digital nudges impacts consumer decisions, and how consumer preferences based on that knowledge impacts design decisions. Paper 1 presents a systematic narrative literature review on the evolution of digital nudge literature. This investigation uncovers several themes and provides a basis for a revised definition of digital nudges and a taxonomy wheel of digital nudges. Paper 2 (co-authored with Jeffrey Livingston, Jonathan Ericson, and Patrick McHugh) investigates how knowledge about digital nudges impacts consumer preferences to have them within the digital experiences they use. This paper highlights how knowledge of digital nudges impact consumer online …
Quantum Hooks And Mirror Symmetry For Flag Varieties, Linda Chen, E. Kalashnikov
Quantum Hooks And Mirror Symmetry For Flag Varieties, Linda Chen, E. Kalashnikov
Mathematics & Statistics Faculty Works
Given a flag variety F1 (n; r1,...,rp), there is natural ring morphism from the symmetric polynomial ring in r1 variables to the quantum cohomology of the flag variety. In this paper, we show that for a large class of partitions λ, the image of sλ under the ring homomorphism is a Schubert class which is described by partitioning λ into a quantum hook (or q-hook) and a tuple of smaller partitions. We use this result to show that the Plücker coordinate mirror of the flag variety describes quantum cohomology relations. This gives new …
Structure And Dynamics That Specialize Neurons For High-Frequency Coincidence Detection In The Barn Owl Nucleus Laminaris, Ben Drucker , '22, Joshua H. Goldwyn
Structure And Dynamics That Specialize Neurons For High-Frequency Coincidence Detection In The Barn Owl Nucleus Laminaris, Ben Drucker , '22, Joshua H. Goldwyn
Mathematics & Statistics Faculty Works
A principal cue for sound source localization is the difference in arrival times of sounds at an animal’s two ears (interaural time difference, ITD). Neurons that process ITDs are specialized to compare the timing of inputs with submillisecond precision. In the barn owl, ITD processing begins in the nucleus laminaris (NL) region of the auditory brain stem. Remarkably, NL neurons are sensitive to ITDs in high-frequency sounds (kilohertz-range). This contrasts with ITD-based sound localization in analogous regions in mammals where ITD sensitivity is typically restricted to lower-frequency sounds. Guided by previous experiments and modeling studies of tone-evoked responses of NL …
Generalized Sasakian Structures From A Poisson Geometry Viewpoint, Janet Talvacchia
Generalized Sasakian Structures From A Poisson Geometry Viewpoint, Janet Talvacchia
Mathematics & Statistics Faculty Works
In this paper we define a canonical Poisson structure on a normal generalized contact metric space and use this structure to define a generalized Sasakian structure. We show also that this canonical Poisson structure enables us to distinguish generalized Sasakian structures from generalized coKähler structures.
An Exploration Of Parameter Duality In Statistical Inference, Suzanne Thornton, M. Xie
An Exploration Of Parameter Duality In Statistical Inference, Suzanne Thornton, M. Xie
Mathematics & Statistics Faculty Works
Well-known debates among statistical inferential paradigms emerge from conflicting views on the notion of probability. One dominant view understands probability as a representation of sampling variability; another prominent view understands probability as a measure of belief. The former generally describes model parameters as fixed values, in contrast to the latter. We propose that there are actually two versions of a parameter within both paradigms: a fixed unknown value that generated the data and a random version to describe the uncertainty in estimating the unknown value. An inferential approach based on CDs deciphers seemingly conflicting perspectives on parameters and probabilities.
Leadership Strategies Supply Chain Managers Use In Adopting Innovative Technology, Bukola Loveth Olowo
Leadership Strategies Supply Chain Managers Use In Adopting Innovative Technology, Bukola Loveth Olowo
Walden Dissertations and Doctoral Studies
Supply chain managers face challenges when adopting new technologies to remain competitive and satisfy consumer demands involving expedited delivery of food and services. Supply chain managers who fail to adopt new technology have a decreased propensity to stay competitive. Grounded in the transformation leadership theory, the purpose of this qualitative multiple-case study was to explore leadership strategies supply chain managers use in adopting innovative technology. Participants were six supply chain managers who successfully used leadership strategies to adopt new innovative technology. Sources for data collection were semistructured interviews, company archival documents, and field notes. Research data were analyzed via thematic …
Illegal Unreported And Unregulated Fishing And Overfishing Policymaking In A Caribbean Island Country, Anya J. Moses
Illegal Unreported And Unregulated Fishing And Overfishing Policymaking In A Caribbean Island Country, Anya J. Moses
Walden Dissertations and Doctoral Studies
Small island developing states, especially those within the Caribbean community, are faced with the challenges of overfishing and illegal, unregulated, and unreported (IUU) fishing activities. Despite global legal reforms, enforcement continues to be ineffective. In the policymaking process, the perspectives of those critically impacted are rarely taken into consideration The purpose of this qualitative study was to explore the issues leading to the lack of inclusion of fisherfolk knowledge in the policymaking process and policies that promote SDG 14. The goal was to explore the importance of fisherfolk involvement in the policymaking process. The research question focused on identifying the …
Relationship Between Strategic Dexterity, Absorptive Capacity, And Competitive Advantage, Ifechide Monyei
Relationship Between Strategic Dexterity, Absorptive Capacity, And Competitive Advantage, Ifechide Monyei
Walden Dissertations and Doctoral Studies
Small- and medium-sized enterprise (SME) manufacturing executives and managers are concerned with the rapid technological changes involving artificial intelligence (AI), machine learning, and big data. To compete in the global landscape, effectively managing digital and artificial intelligence changes among SME manufacturing executives and managers is critical for leaders to compete in 2023 and beyond. Grounded in the dynamic capabilities view theory, the purpose of this quantitative correlation study was to examine the relationship between strategic dexterity, absorptive capacity, and competitive advantage. The participants were 66 executives and managers of SME manufacturing organizations who use big data and analytics daily and …
Teachers’ Perceptions Of Using Culturally Relevant Education Practices To Teach Middle-Grades Mathematics, Lorna Bridgetnal Randle
Teachers’ Perceptions Of Using Culturally Relevant Education Practices To Teach Middle-Grades Mathematics, Lorna Bridgetnal Randle
Walden Dissertations and Doctoral Studies
AbstractAfrican American students and other students of color are not experiencing equitable learning outcomes in mathematics classrooms. The problem this study investigated was if and how teachers used culturally relevant education to help increase learning opportunities for African American students. This basic qualitative study aimed to explore teachers' perceptions of how they use culturally relevant education instructional practices to teach mathematics to middle-grade African American students. Further, teachers’ perceptions of their preparedness to use culturally relevant education practices were explored. Aronson and Laughter’s theory of culturally relevant education framed the study and guided data analysis. The research questions investigated if …
Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang
Nutrient Pollution And Chlorophyll-A As A Precursor To Harmful Algal Blooms And Cyanotoxins In Rehabilitated Machado Lake, California, Michael E. Shiang
Walden Dissertations and Doctoral Studies
Algal blooms result in the formation of cyanotoxic conditions in a freshwater lake causing severe detrimental impacts to community and public health. Nitrogen, phosphorous, and ammonia stimulate the growth of phytoplankton biomass and algae, as measured by chlorophyll. This retrospective quantitative research study, grounded in the socioecological model, examined the relationship between nutrient pollutants and chlorophyll-a (Chl-a) that forecast harmful algal blooms, a precursor to cyanotoxins. A former impaired lake, Machado Lake in California, provided an ideal setting to assess relationships among nutrient indicators and Chl-a post-lake rehabilitation. Correlation and multiple regression analyses were performed to determine if a relationship …
Understanding U.S. Customers' Intention To Adopt Robo-Advisor Technology, Deborah Wall
Understanding U.S. Customers' Intention To Adopt Robo-Advisor Technology, Deborah Wall
Walden Dissertations and Doctoral Studies
Finance and information technology scholars wrote that there is a literature gap on what factors drive investors in Western financial markets to use a Robo-advisor to manage their investments. The purpose of this qualitative, single case study with embedded units is to understand the adoption intentions of retail investors in U.S. markets to use a Robo-advisor instead of a human advisor. A single case study design addressed the literature gap, and qualitative data from seven semi=structured interviews, reflective field notes, and archival data were triangulated to answer the research question. This study was grounded in a theoretical framework that includes …
How It Professionals Acquire Soft Skills, Paul Majett
How It Professionals Acquire Soft Skills, Paul Majett
Walden Dissertations and Doctoral Studies
AbstractIn this study, I investigated how information technology (IT) professionals learn/acquire soft skills. Little is understood about how IT professionals describe and apply the soft skills that they consider necessary for their own employability. Exploring how IT professionals describe and apply soft skills is important to their future work and career advancement. The purpose of this basic qualitative study was to better understand how IT professionals learn/acquire soft skills. Bandura’s 1986, social learning theory served as the organizational conceptual framework of this study and guided the research question, which asked how IT professionals acquire learn/acquire soft skills. This research question …
Generational Information Security Awareness And The Role Of Big Five Personality Traits, Gloria Mccue
Generational Information Security Awareness And The Role Of Big Five Personality Traits, Gloria Mccue
Walden Dissertations and Doctoral Studies
AbstractTechnological change drives organizations to safeguard information systems. However, such safeguards are dependent upon people to follow security rules. This study examined generational cohorts and personality traits and their impact on information security awareness. Participants in this study were 137 volunteers who completed an anonymous survey online. Two tools were utilized to collect data from the participants: the Human Aspects of Information Security Questionnaire and the Big Five Inventory, which captured behaviors and personality traits, respectively. The three main generational cohorts represented in the study, Baby Boomers, Generation X, and Generation Y, were in today’s workforce. The results of the …
Perceived Barriers To Cervical Cancer Screening Among Hispanic Women, Damaris Perez
Perceived Barriers To Cervical Cancer Screening Among Hispanic Women, Damaris Perez
Walden Dissertations and Doctoral Studies
AbstractHispanic women are among the ethnic groups with higher cervical cancer rates in the United States. This mixed-method study was conducted to explore perceived barriers and self-efficacy-related factors to cervical cancer screening in foreign-born Hispanic women in Florida. The theory of planned behavior was applied to determine if behavioral intentions influence access to cervical cancer screening. The inclusion criteria included Hispanic women 18 years old and older without a hysterectomy history. Quantitative data were collected through a self-administered survey. A total of 84 individuals completed the survey. A binary logistic regression analysis was performed to determine if sociodemographic factors are …
Offshore Wind Industry Leaders’ Operations And Maintenance Management Strategies, Heather Louise Shimp
Offshore Wind Industry Leaders’ Operations And Maintenance Management Strategies, Heather Louise Shimp
Walden Dissertations and Doctoral Studies
The difficulties offshore wind leaders have in managing operations and maintenance (O&M) costs threaten the ability to operate offshore wind farms profitably, diversify the energy supply, and reduce dependence on imported fuels. Grounded in the frameworks of Lean Six Sigma and McKinsey 7-S, the purpose of this qualitative multi-case study was to explore offshore wind farm leaders’ strategies to manage O&M costs in Europe. The participants were six offshore wind leaders who implemented strategies to successfully manage O&M costs for offshore wind farms located in Europe. Data were collected using semistructured interviews, participant observation, and reviewing public and participant-supplied documents. …
Strategies To Increase Competitive Advantage In The Automotive Manufacturing Supply Chain, Amber Willis
Strategies To Increase Competitive Advantage In The Automotive Manufacturing Supply Chain, Amber Willis
Walden Dissertations and Doctoral Studies
Some automotive manufacturing supply chain leaders lack strategies that are needed to implement information technology (IT) systems. Business leaders are concerned with implementing IT systems to achieve and maintain a competitive advantage. Grounded in the resource-based view theory (RBV), the purpose of this qualitative single case study was to explore information system strategies used by leaders in the automotive manufacturing supply chain to achieve competitive advantage. Participants were five leaders of an automotive manufacturing supply chain organization who implemented IT systems. Data were collected through semistructured interviews and a review of organization project documents. Through thematic analysis, five themes were …
The Relationship Between Organizational Knowledge Management Constructs And Organizational Flexibility, Marcus B. Williams
The Relationship Between Organizational Knowledge Management Constructs And Organizational Flexibility, Marcus B. Williams
Walden Dissertations and Doctoral Studies
The role that the information technology (IT) department serves is governed by the corporate culture and how it values the use of knowledge, including IT, to achieve a strategic competitive advantage. The purpose of this quantitative study was to examine the potential relationships between information acquisition, knowledge dissemination, shared interpretation, organizational memory, and organizational flexibility. Two theories served as the theoretical foundation for this study: contingency theory and the resource-based view of the firm. To answer the question of possible correlation between organizational flexibility and components of knowledge management, a randomly selected sample of 193 IT professionals employed at small- …
Strategies For Sustaining Success In Small Businesses In Nigeria, Mina Johnson-Hart
Strategies For Sustaining Success In Small Businesses In Nigeria, Mina Johnson-Hart
Walden Dissertations and Doctoral Studies
Enterprise owners in Nigeria who need more entrepreneurial skills and an understanding of the business environment may need help sustaining their market share. Nigerian small business owners are concerned with the need for entrepreneurial growth strategies because it could reduce business profitability sustainability and lead to entity failure. Grounded in the entrepreneurial orientation theory, the purpose of this qualitative multiple case study was to explore strategies Nigerian small business owners implement for sustaining success beyond 5 years. The participants were three small business owners in the professional services sector who developed strategies for sustaining success beyond 5 years. Data were …
Succession Planning Strategies For Nonprofit Organizations, Chandler Campbell
Succession Planning Strategies For Nonprofit Organizations, Chandler Campbell
Walden Dissertations and Doctoral Studies
Nonprofit organizations are cornerstones in the community that contribute to improving environments, communities, persons, and life overall. However, some nonprofit organization senior leaders lack the succession planning strategies, resources, and funding to continue serving as positive social change agents in the community. Grounded in the general systems theory, the purpose of this qualitative single case study was to explore business strategies nonprofit leaders use for succession planning. The participants included three senior leaders in a nonprofit located in the northeastern region of the United States who have indirectly or directly implemented succession planning strategies. Data were collected through semistructured interviews, …
Ai Usage In Development, Security, And Operations, Maurice Ayidiya
Ai Usage In Development, Security, And Operations, Maurice Ayidiya
Walden Dissertations and Doctoral Studies
Artificial intelligence (AI) has become a growing field in information technology (IT). Cybersecurity managers are concerned that the lack of strategies to incorporate AI technologies in developing secure software for IT operations may inhibit the effectiveness of security risk mitigation. Grounded in the technology acceptance model, the purpose of this qualitative exploratory multiple case study was to explore strategies cybersecurity professionals use to incorporate AI technologies in developing secure software for IT operations. The participants were 10 IT professionals in the United States with at least 5 years of professional experience working in DevSecOps and managing teams of at least …
Construction Industry: Profitable Corporate Sustainability Strategies And Processes Achieve Competitive Advantage, Chad Justin Czelusniak-Serviss
Construction Industry: Profitable Corporate Sustainability Strategies And Processes Achieve Competitive Advantage, Chad Justin Czelusniak-Serviss
Walden Dissertations and Doctoral Studies
Some construction industry managers lack strategies to integrate corporate sustainability strategies and processes for competitive advantage, which causes limited profitability. Grounded in the general systems theory, the purpose of this multiple case study was to explore corporate sustainability strategies and processes senior and mid-level construction industry managers use to achieve competitive advantage in the United States. The participants were eight senior/mid-level construction industry managers from eight different construction industry organizations with at least five years of experience in the construction industry who utilized corporate sustainability strategies and processes. Data were collected using semistructured interviews. Three themes emerged using thematic analysis: …
Knowledge-Sharing Practice As A Tool In Organizational Development In Nigerian Higher Educational Institutions, Emmanuel Ajiri Ojo
Knowledge-Sharing Practice As A Tool In Organizational Development In Nigerian Higher Educational Institutions, Emmanuel Ajiri Ojo
Walden Dissertations and Doctoral Studies
AbstractUnderstanding knowledge management is key to understanding organizational development and innovations. Inadequate knowledge-sharing practices in Nigerian educational institutions has impeded innovation and management development. The purpose of this qualitative modified Delphi study was to seek consensus among administrators from Nigerian educational institutions and scholars from Nigerian universities regarding knowledge-sharing practices that nourish innovation in Nigerian higher educational institutions. The organizational development framework was used to guide the study. Data collection included a nonprobability purposive sampling of 25 participants and three rounds of surveys administered online. A consensus was reached on eight factors after coding and thematic analysis: setting knowledge-sharing expectations, …
Developing Consensus On The Use Of Emotional Intelligence Training In Small Utility Companies, Nathaniel E. Holloway
Developing Consensus On The Use Of Emotional Intelligence Training In Small Utility Companies, Nathaniel E. Holloway
Walden Dissertations and Doctoral Studies
Park and Shaw shared the impact on organizations from unmotivated and unsatisfied employees link to higher turnover ratios. The use of emotional intelligence in manager training lowered employee turnover by 13%. The problem address in this Delphi study was that small utility companies do not have an emotional intelligence plan in place for managerial training. Goleman and Mayer’s framework was used as the theorical lens for examining response of participants to the Delphi study. A panel of experts submitted data in the form of responses to three rounds of questions regarding the use of emotional intelligence training in small businesses. …
Technical Training To Nonprofit Managers Influences Using Big Data Technology In Business Operations, Dr. Arslan Isaac Phd
Technical Training To Nonprofit Managers Influences Using Big Data Technology In Business Operations, Dr. Arslan Isaac Phd
Walden Dissertations and Doctoral Studies
This nonexperimental, survey-based online quantitative study on nonprofit managers’ technical training measures the extent of the influence on big data technology use. The unified theory of acceptance and use of technology is a theoretical framework to determine whether business managers are trained to have know-how in using big data technology. This study followed a quantitative methodology to help narrow the gap in research between what is not known in relation to the nonprofit manager’s technical training on the use of big data technology. Today’s data is the most critical asset, but progress toward big data technology-oriented usage needs to be …
Potential Alzheimer's Disease Plasma Biomarkers, Taylor Estepp
Potential Alzheimer's Disease Plasma Biomarkers, Taylor Estepp
Theses and Dissertations--Epidemiology and Biostatistics
In this series of studies, we examined the potential of a variety of blood-based plasma biomarkers for the identification of Alzheimer's disease (AD) progression and cognitive decline. With the end goal of studying these biomarkers via mixture modeling, we began with a literature review of the methodology. An examination of the biomarkers with demographics and other health factors found evidence of minimal risk of confounding along the causal pathway from biomarkers to cognitive performance. Further study examined the usefulness of linear combinations of biomarkers, achieved via partial least squares (PLS) analysis, as predictors of various cognitive assessment scores and clinical …
The Magic Ratio Of Circles, Admin Stem For Success
The Magic Ratio Of Circles, Admin Stem For Success
STEM for Success Showcase
The ratio of a circle's circumference to diameter
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What pi is
Use logic to sense that the diameter and circumference of a circle will always be related
Arithmetic And Geometric Series, Admin Stem For Success
Arithmetic And Geometric Series, Admin Stem For Success
STEM for Success Showcase
Math:
-Introducing the concept of arithmetic and geometric series/discussing the differences
-Multiplying, adding, dividing, subtracting, exponents