Digital Commons Network^™

A-Step 2030 – New Research Project Presents A Picture Of The Skills Needed For Engineers To Solve The Sustainable Development Goals (Sdgs)., Una Beagon

Articles

Communication and Technical Skills will still be the most important attributes required of engineers in the future, according to a new study by the A-STEP 2030 Erasmus+ funded project. The project which is led by ENSTA Bretagne, France and has academic partners in TU Dublin, Metropolia University of Applied Sciences in Finland and Aalborg University in Denmark aims to develop innovative teaching approaches for engineering students which will attract a more diverse student body to the engineering profession.

The Rider (2019-12-02), Victor G. Ramirez

The Rider Archives

Vol.5 No.14

Characterization Of Bacterial Communities In Biscayne Bay Through Genomic Analysis, Eric Fortman

HCNSO Student Theses and Dissertations

Biscayne Bay is a shallow oligotrophic estuary in Southeast Florida. Channelization of rivers, and dredging of canals has greatly altered the historical flow of fresh water into the bay. This, coupled with the rise of a sprawling urban & suburban development, has greatly increased the nutrient load in the bay. This study examined the bacterial community at 14 stations throughout Biscayne Bay —6 stations were located at the mouths of canals; 1 upstream-canal station; 6 stations in the center of the bay; and one ocean influenced station, located near the entrance to the bay. One liter, surface water samples were …

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 save …

Legal Realism And Legal Doctrine, Dan Priel

All Papers

Legal realism is widely perceived to be hostile to legal doctrine. In the familiar narrative, the realists showed that legal doctrine does not, and cannot, constrain judges from using existing legal materials to reach virtually any outcome they want. As such, doctrine only serves to hides and obfuscate what is better discussed openly. The purpose of this essay is to complicate this familiar story. I focus on one contemporary take on legal realism that argues that an open discussion of values will give the law greater determinacy. I counter this view, first, by showing that it does not, in fact, …

Grand Valley Forum, Volume 044, Number 08, December 2, 2019, Grand Valley State University

2019-2020, Volume 44

Grand Valley Forum is Grand Valley State's faculty and staff newsletter, published from 1976 to the present.

Importance Of Refractory Ligands And Their Photodegradation For Iron Oceanic Inventories And Cycling, Christel Hassler, Damien Cabanes, Sonia Blanco-Ameijeiras, Sylvia G. Sander, Ronald Benner

Faculty Publications

Iron is an essential micronutrient that limits primary production in up to 40% of the surface ocean and influences carbon dioxide uptake and climate change. Dissolved iron is mostly associated with loosely characterised organic molecules, called ligands, which define key aspects of the iron cycle such as its residence time, distribution and bioavailability to plankton. Models based on in situ ligand distributions and the behaviour of purified compounds include long-lived ligands in the deep ocean, bioreactive ligands in the surface ocean and photochemical processes as important components of the iron cycle. Herein, we further characterise biologically refractory ligands in dissolved …

Asymptotic Analysis Of Quasi-Limiting Behavior For Drifted Brownian Motion Conditioned To Stay Positive, Sangjoon Lee

Doctoral Dissertations

A Quasi-Stationary Distribution for a Markov process with an almost surely reached absorbing state is a conditionally time-invariant distribution on the state space, which the condition is that the process is not absorbed by the given time. Previous works of Martinez et al. identify the family of Quasi-Stationary Distribution for Brownian motion with negative drift, and characterize the domain of attraction for each of them.

This paper will mainly focus on two subjects.

1. We provide a new approach simplifying the existing results, which explains the direct relation between a QSD and an initial distribution in the domain of attraction …

Topological Data Analysis For Clustering And Classifying Time Series, Renjie Chen

Doctoral Dissertations

Topological Data Analysis (TDA), which refers to methods of utilizing topological

features in data (such as connected components, tunnels, voids, etc.) has gained considerable

momentum. More recently, TDA has been increasingly used for analyzing time

series. The recent researches of using TDA in time series are mainly focused on unsupervised

and supervised learning. In this thesis, a review of TDA will be provided,

following by using TDA in time series for doing unsupervised and supervised learning

for different applications.

Insurance Analytics With Tree-Based Models, Zhiyu Quan

Doctoral Dissertations

Tree-based models are supervised learning algorithms broadly described by repeated partitioning of the regions of the explanatory variables to form homogeneous groups. The partitioning is based on minimization of a loss function related to the response variable. The results form and create a tree-based structure, which helps make for better model interpretation, for predicting the response. Because of the many advantages of tree-based models, their use in disciplines like engineering, biostatistics, and ecology has been a popular alternative predictive tools for building classification and regression models. A single decision tree may not produce accurate predictions, thereby, we also examine the …

Spectroscopic And Computational Comparisons Of Thiolate-Ligated Ferric Nonheme Complexes To Cysteine Dioxygenase: Second-Sphere Effects On Substrate (Analogue) Positioning, Anne A. Fischer, Joshua R. Miller, Richard J. Jodts, Danushka M. Ekanayake, Sergey V. Lindeman, Thomas C. Brunold, Adam T. Fiedler

Chemistry Faculty Research and Publications

Parallel spectroscopic and computational studies of iron(III) cysteine dioxygenase (CDO) and synthetic models are presented. The synthetic complexes utilize the ligand tris(4,5-diphenyl-1-methylimidazol-2-yl)phosphine (^Ph2TIP), which mimics the facial three-histidine triad of CDO and other thiol dioxygenases. In addition to the previously reported [Fe^II(CysOEt)(^Ph2TIP)]BPh₄ (1; CysOEt is the ethyl ester of anionic l-cysteine), the formation and crystallographic characterization of [Fe^II(2-MTS)(^Ph2TIP)]BPh₄ (2) is reported, where the methyl 2-thiosalicylate anion (2-MTS) resembles the substrate of 3-mercaptopropionate dioxygenase (MDO). One-electron chemical oxidation of 1 and 2 yields ferric species …

Collaboration Patterns As A Function Of Research Experience Among Mixed Researchers: A Mixed Methods Bibliometric Study, Melanie S. Wachsmann, Anthony J. Onwuegbuzie, Susan Hoisington, Vanessa Gonzales, Rachael Wilcox, Rachel Valle, Majed Aleisa

The Qualitative Report

Onwuegbuzie et al. (2018) documented that the degree of collaboration is higher for mixed researchers than for qualitative and quantitative researchers. The present investigation examined the (a) link between the research experience of lead authors and their propensity to collaborate (Quantitative Phase), and (b) role of research experience in collaborative mixed research studies (Qualitative Phase). Analyses of articles published in the Journal of Mixed Methods Research from 2007 (its inception) to the third issue in 2018 (time of data collection) revealed that the average research experience of lead authors decreased from 20.29 in 2007 to 14.24 in 2017 (last complete …

Amir’S Life Story: Resilience And Other Soft Skills Development To Thrive, Despite Vulnerable Beginnings, Yatela Zainal-Abidin, Rosna Awang-Hashim, Hasniza Nordin

The Qualitative Report

This article explores the life story of Amir, a young adult from a rural village in Malaysia, who built resilience and developed soft skills to thrive in his life despite his vulnerable beginnings. Amir’s strong resilience and other soft skills that assisted him to be outstanding in his academics and career may have resulted from his caring and supportive authoritative mother, countering his strict and harsh authoritarian father, with an ecological system of protective factors and developmental assets strengthened by religiosity and spirituality. However, both his parents’ extremely different confrontive and coercive methods appeared to have worked together towards the …

Cybersecurity Games: Mathematical Approaches For Cyber Attack And Defense Modeling, Mohammad Hadi Valizadeh

Doctoral Dissertations

Cyber-attacks targeting individuals and enterprises have become a predominant part of the computer/information age. Such attacks are becoming more sophisticated and prevalent on a day-to-day basis. The exponential growth of cyber plays and cyber players necessitate the inauguration of new methods and research for better understanding the "cyber kill chain," particularly with the rise of advanced and novel malware and the extraordinary growth in the population of Internet residents, especially connected Internet of Things (IoT) devices.

Mathematical modeling could be used to represent real-world cyber-attack situations. Such models play a beneficial role when it comes to the secure design and …

Cosm Physics News, Georgia Southern University

Biochemistry, Chemistry & Physics: News & Publications (2012-2023)

• Georgia Southern Planetarium

Situational Awareness: Examining Factors That Affect Cyber-Risks In The Maritime Sector, K Tam, Kd Jones

School of Engineering, Computing and Mathematics

Standard risk assessments are used to define and prioritize threats within a sector. However, the rising number of cybersecurity risks in maritime are often temperamental to a range of environmental, technical, and social factors. A change during an incident can significantly alter the risks and, consequently, the incident outcomes. Therefore, agile, changing risk profiles are becoming more necessary in the modern world. In addition to static and dynamic, maritime operational risks can be affected by cyber, cyber-physical, or physical elements. This demonstrates the equal use of information and operational technology (IT/OT); however, most quantitative risk assessment frameworks focus on one …

The Study Of Zeolitic Imidazolate Framework (Zif-8) Doped Polyvinyl Alcohol/Starch/Methyl Cellulose Blend Film, Shaoxiang Lee, Yunna Lei, D Wang, Chunxu Li, Jiaji Cheng, J Wang, Wenqiao Meng, Meng Liu

School of Engineering, Computing and Mathematics

ZIF-8 nanoparticle-doped polyvinyl alcohol (PVA)-S-MC films were prepared via casting method. The effect of different concentrations of ZIF-8 on the physical properties and structural characterization of the films were investigated. The results indicated that ZIF-8 could increase the water resistance and mechanical property of the membrane. Through FTIR, scanning electron microscope (SEM), atomic force microscope (AFM), and TGA analysis, it was found that ZIF-8 changed the phenomenon of macromolecule agglomeration and improved the thermal stability of the membrane. The breathable behavior of the film was also studied through oxygen permeability and water vapor permeability analysis. The result illustrated that the …

Thermodynamic Model Of Co2 Deposition In Cold Climates, Sandra K. S. Boetcher, Ted Von Hippel, Matthew J. Traum

Publications

A thermodynamic model, borrowing ideas from psychrometric principles, of a cryogenic direct-air CO2-capture system utilizing a precooler is used to estimate the optimal CO2 removal fraction to minimize energy input per tonne of CO2. Energy costs to operate the system scale almost linearly with the temperature drop between the ingested air and the cryogenic desublimation temperature of CO2, driving siting to the coldest accessible locations. System performance in three Arctic/Antarctic regions where the proposed system can potentially be located is analyzed. Colder ambient temperatures provide colder system input air temperature yielding lower CO2 removal energy requirements. A case is also …

Application Of Bradford's Law Of Scattering And Obsolescence In The Literature Of Chemistry: A Study Based On Doctoral Theses, Mithu Anjali Gayan, Sanjay Kumar Singh

Library Philosophy and Practice (e-journal)

The proposed study tries to investigate citation pattern of Chemistry theses submitted to Central library Tripura University. The study considered only those theses submitted to Shodhganga, the Indian ETD initiative. Hence data were collected from 20 theses constituting 6214 citations during 2007 to 2016. Bardford’s law is used to find out the core journals in the field of Chemistry. The rank list of journals showed “Phytochemistry” is the most cited journal. The dataset of the study did not follow the Bradford’s law. However, the dataset follow the Leimkuhler’s model. Half life of Chemistry journals is found to be 12.6 years. …

Scientometric Profile Of Tripura University Based On Selected Disciplines: A Study, Mithu Anjali Gayan, Sanjay Kumar Singh

Library Philosophy and Practice (e-journal)

Research productivity of Tripura which is one of the North East Indian states is not measured from a point of view of Scientometrics until now. It’s an untouched area of research. An attempt has been made in this study to understand and evaluate research productivity indexed in Web of Science database of selected disciplines from Tripura University as it is the only central university in the state. It is found that since beginning until 2019, 313 documents are indexed in the database from the broad research areas of Chemistry, Mathematics and Physics. The study revealed that Bhattacharjee, D is the …

Decision In Art. 78 Proceeding - Davis, Brenda (2013-08-12)

Decisions in Art. 78 Proceedings

No abstract provided.

Discrete Structure Of The Brain Rhythms, L. Perotti, J. Devito, D. Bessis, Y. Dabaghian

Faculty Publications

Neuronal activity in the brain generates synchronous oscillations of the Local Field Potential (LFP). The traditional analyses of the LFPs are based on decomposing the signal into simpler components, such as sinusoidal harmonics. However, a common drawback of such methods is that the decomposition primitives are usually presumed from the onset, which may bias our understanding of the signal’s structure. Here, we introduce an alternative approach that allows an impartial, high resolution, hands-off decomposition of the brain waves into a small number of discrete, frequency-modulated oscillatory processes, which we call oscillons. In particular, we demonstrate that mouse hippocampal LFP contain …

The Logic Behind Neural Control Of Breathing Pattern, Alona Ben-Tal, Yunjiao Wang, Maria C.A. Leite

Faculty Publications

The respiratory rhythm generator is spectacular in its ability to support a wide range of activities and adapt to changing environmental conditions, yet its operating mechanisms remain elusive. We show how selective control of inspiration and expiration times can be achieved in a new representation of the neural system (called a Boolean network). The new framework enables us to predict the behavior of neural networks based on properties of neurons, not their values. Hence, it reveals the logic behind the neural mechanisms that control the breathing pattern. Our network mimics many features seen in the respiratory network such as the …

The Effects Of Climate On Suicide Rates In 36 Oregon Counties, Elshadai Hailu, Maria Hernandez

Student Scholarship - College of Business

This study looked at average temperature, amount of rainfall and amount of sunshine in all 36 Oregon counties and how they affect suicide rates. Climate information was gathered over the past 30 years and suicide rates were measured between the years 2013 and 2016. It was hypothesized that there would be a negative relationship between low temperature and suicide rates. It was also predicted that there would be a negative relationship between high temperatures and suicide rates. This study found that there was a negative relationship between average high temperature and sucide rates. It also found there is to be …

Can Oral Contraceptives Increase Antibiotic Resistance In Escherichia Coli?, Allison Helene Clatch, Leah Van Otterloo

Baker/Koob Endowments Awarded Projects

Antibiotic resistance is one of the most pressing threats to public health. Intrinsic resistance to many antimicrobials in Gram-negative bacteria is accomplished by naturally occurring efflux pumps. Efflux pumps are transmembrane proteins that can extrude antimicrobials from bacterial cytoplasm. Efflux pumps recognize a wide range of compounds including antibiotics, antiseptics, pesticides, and hormones. The upregulation of efflux pump genes in response to increasing concentrations of substrates has shown to increase resistance to toxic substrates. We hypothesize that efflux pump substrates other than antimicrobials, such as steroid hormones, will also induce the expression of efflux pump genes and consequently increase resistance …

Evolution - #0: Advanced Biological Systems, Jessica Amacher, Sowmya Anjur, Donald Dosch, Sarah O'Leary-Driscoll, Crystal Randall

Unit 1: Evolution

The first unit of Advanced Biological Systems is focused on the theory of evolution, the mechanisms of evolutionary change, and discussions of the biological species concept. We discuss briefly how biodiversity stabilizes ecosystems. A study of biological evolution is placed first in the sequence of our curriculum to establish a foundation that explains the diversity of organisms, as well as biochemical processes, and the ongoing change process we witness today. These concepts will later be utilized in our curriculum to highlight cellular and metabolic diversity, the development of cancers, the interactions of bacteria with the ecosystem of the human host, …

Evolution - #8: Ecosystem Disrupted, Jessica Amacher, Sowmya Anjur, Donald Dosch, Sarah O'Leary-Driscoll, Crystal Randall

Unit 1: Evolution

This is the culminating activity for the evolution unit. For this assignment, students must research into the impact human industry has on a small part of our world. Students have had a brief introduction to the history of the planet and the role that carbon dioxide concentration play in climate change. The role of climate and weather patterns is important in a discussion of a chosen place on the planet. Students have spent a large amount of effort in understanding evolutionary theory and mechanisms and seen it in practice as they read about speciation. With this assignment, students can synthesize …

Evolution - #3: Evolution On The Web, Jessica Amacher, Sowmya Anjur, Donald Dosch, Sarah O'Leary-Driscoll, Crystal Randall

Unit 1: Evolution

This lesson is a companion piece the previous one: Evolutionary Evidences and Inferences. It is completed supported by readings at an online site hosted by The University of California at Berkeley. The site is linked here:

http://evolution.berkeley.edu/evolibrary/article/0_0_0/evo_14

Evolution - #2: Evolutionary Evidence And Inferences, Jessica Amacher, Sowmya Anjur, Donald Dosch, Sarah O'Leary-Driscoll, Crystal Randall

Unit 1: Evolution

The theory of evolution articulates elegantly a series of inferences from a vast collection of observations and evidence. We present some of those evidences here to stimulate in our students the sorts of scientific reasoning necessary to understand the presence and origin of diversity of life on the planet.

Evolution - #1: History Of Life, Jessica Amacher, Sowmya Anjur, Donald Dosch, Sarah O'Leary-Driscoll, Crystal Randall

Unit 1: Evolution

From the perspective of a biologist, the history of life on the Earth is a recurring story. Although details may be different, what happens today has precedence in the occurrences of the past. Two underlying ideas are vital for students to understand a modern conception of the theory of evolution. First, over long periods of time, and due to natural events, the environment of the Earth has changed, sometimes dramatically. Second, each environmental change has created more favorable conditions for some species to live and reproduce, while producing less favorable conditions for others. This first lesson in our unit on …