Physical Sciences and Mathematics Commons^™

Covid 19 Vaccine, Michael Fuller

Goal 3: Good Health and Well-Being

No abstract provided.

Program, The Nebraska Academy Of Sciences: One Hundred-Thirty-First Annual Meeting, April 23-24, 2021. Online, The Nebraska Academy Of Sciences, Inc.

Nebraska Academy of Sciences: Programs and Proceedings

AFFILIATED SOCIETIES OF THE NEBRASKA ACADEMY OF SCIENCES, INC.

1.American Association of Physics Teachers, Nebraska Section: Web site: http://www.aapt.org/sections/officers.cfm?section=Nebraska

2.Friends of Loren Eiseley: Web site: http://www.eiseley.org/

3.Lincoln Gem & Mineral Club: Web site: http://www.lincolngemmineralclub.org/

4.Nebraska Chapter, National Council for Geographic Education

5.Nebraska Geological Society: Web site: http://www.nebraskageologicalsociety.org Sponsors of a $50 award to the outstanding student paper presented at the Nebraska Academy of SciencesAnnual Meeting, Earth Science /Nebraska Chapter, National Council Sections

6.Nebraska Graduate Women in Science

7.Nebraska Junior Academy of Sciences: Web site: http://www.nebraskajunioracademyofsciences.org/

8.Nebraska Ornithologists’ Union: Web site: http://www.noubirds.org/

9.Nebraska Psychological Association: http://www.nebpsych.org/

10.Nebraska-Southeast South Dakota Section Mathematical …

Relationship Between Thermal Conductivity And Free Electrons In Metal, Yansong Liu

Senior Theses

An experiment was designed and conducted to explore the relationship between thermal conductivity with free electrons in metal. In the experiment, copper, iron, aluminum, and titanium rods with close diameters were used to carry out the experiment. Each rod was heated up by a heat unit at one end while cooled on the other end with a heat sink to maintain a steady state. DC current was applied to rods in the direction along, as well as against, the heat flow. Thermal conductivities were measured in these two situations for each rod. Results showed electrons do dominate thermal flow inside …

Securing Pint Glasses On Serving Trays With Magnetic Attachments, Jayden Commendatore

Senior Theses

It is extremely common for servers in the restaurant industry to have pint glasses slip off their serving tray, wasting both time and money for the restaurant. I have designed a sleeve attachment that will clip on to the bottom of a pint glass. The metal sleeve attachment will be attracted to a magnet placed into the serving tray. This increases the normal force of the pint glass, resulting in an increase in the friction force between the tray and sleeve attachment, and helping secure the glass to the tray. In order to optimize the design, the value of the …

Design Of Smart Trashcan, Haoran Song

Senior Theses

A smart trashcan has been designed which can bring convenience to people for throwing their garbage away during the COVID-19 pandemic. A prototype is made from cardboard to demonstrate its function. This trashcan can sense people who are coming and leaving, and it can open and close automatically. The trashcan is powered by solar energy. A solar panel is mounted on top of the trashcan supporter. This design is specifically for use in China.

Parasite Prevalence In Marsh Rice Rats (Oryzomys Palustris) On Sites Affected By The 2010 Deepwater Horizon Oil Spill, Layni Leblanc

Honors Theses

No abstract provided.

Bat Species Composition And Relative Activity Across A Rural-To-Urban Gradient In Baton Rouge, Louisiana, Emily Munch

Honors Theses

No abstract provided.

Rutile As A Provenance Indicator For The Camerino Sandstone Of The Camerino Basin, Apennine Mountain Region, Italy, Wendy Bogil

Honors Theses

No abstract provided.

Static Analysis Of Haskell For Suitable Metrics For Grading, Christian Fontenot

Honors Theses

No abstract provided.

R Coronae Borealis Star Evolution: Simulating 3d Merger Events To 1d Stellar Evolution Including Large-Scale Nucleosynthesis, Bradley Munson, Emmanouil Chatzopoulos, Juhan Frank, Geoffrey Clayton, Courtney Crawford, Pavel A. Denissenkov, Falk Herwig

Faculty Publications

R Coronae Borealis (RCB) stars are rare hydrogen-deficient carbon-rich variable supergiants thought to be the result of dynamically unstable white dwarf mergers. We attempt to model RCB stars through all the relevant timescales by simulating a merger event in Octo-tiger, a 3D adaptive mesh refinement (AMR) hydrodynamics code, and mapping the post-merger object into MESA, a 1D stellar evolution code. We then post-process the nucleosynthesis on a much larger nuclear reaction network to study the enhancement of s-process elements. We present models that match observations or previous studies in most surface abundances, isotopic ratios, early evolution, and lifetimes. We also …

Plant-Wide Control System Proposal Of Ethylene Cracking Plant Simulation, Estelle Seghers

Honors Theses

No abstract provided.

Dna Curve Classification With Unsupervised Learning, Ben Thomas

Honors Theses

No abstract provided.

Integration And Analysis Of Gaze Behavior In Augmented Reality, George Villaume

Honors Theses

No abstract provided.

Restoration Agriculture In Louisiana: On The Prospects And Ethics Of Creating A Permanent, Dynamic Agricultural System Suited For Louisiana's Environment, Noah Willsea

Honors Theses

No abstract provided.

Sustainability Newsletter: Vol. 5 Issue 4, Jennifer Mclaughlin

SD State Sustainability Newsletter

Content:

• Don't Dump! Donate!
• Spruce Up SDSU Day
• Sustainability Institute Coming in May
• Sustainability Tidbits

Water News, Spring 2021, Department Of Agriculture And Biosystems Engineering

SDWRI Water News

Contents:
North Central Region tackle harmful algal blooms
Algae pull nutrients from swine facility manure, air
Study examines woodchip quality in bioreactors
Nonprofit joins battle to mitigate Lake Mitchell algal blooms

Vims Ferry Pier Ambient Water Monitoring And Meteorological Data, Six-Minute Data 1986-2003, Gary F. Anderson

Data

Bulk water parameters of Temperature and Salinity were measured at the VIMS Ferry Pier from 1947 to 2003. Initial methods were undocumented but likely automated with an instrument and chart recorder since the data consists of a daily high and low measurement from which a mean value was derived. Beginning in 1986 an Inter-Ocean CTD instrument placed at mid-depth was interfaced to a digital data logger (Campbell Scientific CRJ) that recorded data every six minutes, resulting in 240 measurements per day.

This collection contains only the six-minute data from 1986 through 2003. Weather parameters were also added in 1986 and …

From Forests To Fish: Mercury In Mountain Lake Food Webs Influenced By Factors At Multiple Scales, Ariana M. Chiapella, Collin A. Eagles-Smith, Angela Strecker

Environmental Sciences Faculty and Staff Publications

Mountain lakes, while seemingly pristine, have been subjected to historical fish stocking practices and exposure to atmospherically deposited contaminants like mercury. Mercury bioaccumulation in these ecosystems varies widely due to strong environmental gradients, and there are complex, hierarchical factors that affect mercury transport and loading, methylmercury production, and food web biomagnification. We sought to assess how representative variables associated with watershed, lake, and food web-scale processes—specifically, catchment tree cover, lake benthic primary production, and fish diet, respectively—are associated with mercury concentrations in mountain lake fish. Mean fish mercury concentrations varied threefold between lakes, with nearshore tree cover and fish diet …

Quantifying Eco-Friendliness Of Plastic, Paper, And Reusable Bags, Leah Ryan

Honors Projects in Science and Technology

The plight of the consumer in regards to making eco-conscious decisions is growing as concerns regarding the environment increase. This study was conducted in an effort to give consumers a tool to combat some of this issue and compare the types of shopping bags they use in terms of eco-friendliness. Research conducted in this avenue thus far contains convoluted conclusions, all made with consideration of some variables, but not all. This purpose of this study therefore lay in trying to give consumers a standardized tool to compare bag types that considered variables across all stages of a bags’ life (pre-use, …

Lev Landau's Marital Advice Explained, Olga Kosheleva, Vladik Kreinovich

Departmental Technical Reports (CS)

Nobelist physicist Lev Landau was known for applying mathematical and physical reasoning to human relations. His advices may have been somewhat controversial, but they were usually well motivated. However, there was one advice for which no explanation remains -- that a person should not marry his/her first and second true loves, and only start thinking about marriage starting with the third true love. In this paper, we provide a possible Landau-style motivation for this advice.

Why ∞ Is A Reasonable Symbol For Infinity, Olga Kosheleva, Vladik Kreinovich

Departmental Technical Reports (CS)

The fact that ∞ is actively used as a symbol for infinity shows that this symbol is probably reasonable in this role, but why? In this paper, we provide a possible explanation for why this is indeed a reasonable symbol for infinity.

Why Decimal System? Why Communities With More Than 150 Folks Tend To Split? New Consequences Of The Seven Plus Minus Two Law, Leobardo Orea Amador, Vladik Kreinovich

Departmental Technical Reports (CS)

Why are we using the decimal system to describe numbers? Why all over the world, communities with more than 150 folks tend to split? In this paper, we show that both phenomena -- as well as some other phenomena -- can be explained if we take into account the seven plus minus two law, according to which a person can keep in immediate memory from 5 to 9 items.

Why, In Deep Learning, Non-Smooth Activation Function Works Better Than Smooth Ones, Daniel Cruz, Richard Godoy, Vladik Kreinovich

Departmental Technical Reports (CS)

Since in the physical world, most dependencies are smooth (differentiable), traditionally, smooth functions were used to approximate these dependencies. In particular, neural networks used smooth activation functions such as the sigmoid function. However, the successes of deep learning showed that in many cases, non-smooth activation functions like max(0,z) work much better. In this paper, we explain why in many cases, non-smooth approximating functions often work better -- even when the approximated dependence is smooth.

Why Semi-Supervised Learning Makes Sense: A Pedagogical Note, Olga Kosheleva, Vladik Kreinovich

Departmental Technical Reports (CS)

The main idea behind semi-supervised learning is that when we do not enough human-generated labels, we train a machine learning system based on what we have, and we add the resulting labels (called pseudo-labels) to the training sample. Interesting, this idea works well, but why is somewhat a mystery: we did not add any new information so why is this working? There exist explanations for this empirical phenomenon, but most these explanations are based on complicated math. In this paper, we provide a simple intuitive explanation.

Taiger Ai: Saas Bundling And Unbundling, Singapore Management University

Perspectives@SMU

Software companies bundle support services with their products as standard practice. Is it possible to be different…and profitable?

Using Grids As Password Entry Devices, Karol Lejmbach

Master's Theses (2009 -)

The classic text-based password has been around for a very long time. A lot of security research has been conducted on it. A set of best practices has been available for many years stressing the use of longer and more complex passwords. The issue with this approach is that humans have a hard time recalling long complex sequences of characters. Worse, the more complex the string of characters the more prone it is to being written down which is the most detrimental security threat. The goal of this paper is to introduce and provide an introductory analysis of a grid-based …

Understanding God And His Redemptive Work In Computer Science, Mike Wallinga

Faculty Tenure Papers

Computer science as a discipline and computer scientists as a group tend to exhibit a technical, skills-focused disposition. Curriculum standards demand students acquire a long list of mathematical and programming abilities. Students both expect and are excited by the opportunity to learn the ins and outs of cutting-edge technology. Furthermore, programming a computer is an exercise in exactness and specificity. Is the semicolon in the right place? Are all of the parentheses matched? Does this Boolean logic or loop control statement contain an off-by-one error? Failing to state all of the required commands fully and exactly will result in a …

Public Discourse Against Masks In The Covid-19 Era: Infodemiology Study Of Twitter Data, Mohammad A. Al-Ramahi, Ahmed El Noshokaty, Omar El-Gayar, Tareq Nasralah, Abdullah Wahbeh

Computer Information Systems Faculty Publications

Background:

Despite scientific evidence supporting the importance of wearing masks to curtail the spread of COVID-19, wearing masks has stirred up a significant debate particularly on social media.

Objective:

This study aimed to investigate the topics associated with the public discourse against wearing masks in the United States. We also studied the relationship between the anti-mask discourse on social media and the number of new COVID-19 cases.

Methods:

We collected a total of 51,170 English tweets between January 1, 2020, and October 27, 2020, by searching for hashtags against wearing masks. We used machine learning techniques to analyze the data …

Santa Clara Magazine, Volume 62 Number 1, Spring 2021 [Print Issue V.61:1], Santa Clara University

Santa Clara Magazine

14 - VALUE PROPOSITION With more people going to college than ever before, how do we calculate the worth of a college degree? Lauren Loftus.

22 - HUMANITY IN THE HUMOR Santa Clara Magazine sat down with Assistance Professor Danielle Morgan to explore how laughter can be lifesaving—and life affirming. Leslie Griffy.

26 - TOMORROWLAND So really, what happens next? We chat with experts about how the pandemic could change our world as we know it. Leslie Griffy and Tracy Seipel.

32 - A BREAK Explore what you see when you step away from it all—and discover some flighty friends …

Game Chromatic Number On Segmented Caterpillars, Paige Beidelman

Student Research Submissions

Graph theory is the study of sets vertices connected by known as edges, which are depicted as lines. The graph coloring game is a game played on a graph with two players, Alice and Bob, such that they alternate to properly color a graph, meaning no adjacent vertices are the same color. Alice wins if every vertex is properly colored with n colors, otherwise Bob wins when a vertex cannot be colored using n colors. While strategies for winning this game may seem helpful, more interesting is the least number of colors needed for Alice to have a winning strategy, …