Digital Commons Network^™

Synthesis, Characterization And Application Of Structurally Diverse Poly(Chalcogenylene Vinylene)S, Zhen Zhang

Chemistry and Chemical Biology ETDs

Conjugated polymers have found widespread applications in flexible and printable electronic devices, among which poly(thienylene vinylene) (PTV) displays outstanding optoelectronic properties and promising applications. However, further studies of its structure-property-function relationship have been greatly impeded mainly due to the synthetic difficulty of generating new structures beyond its rudimentary form.

To further investigate this class of material, I have developed a facile methodology for the preparation of structurally diverse poly(chalcogenylene vinylene)s (PCVs) through a combination of acyclic diene metathesis (ADMET) polymerization and post-polymerization modification techniques. Specifically, a series of halogenated and cross-conjugated PCVs have been designed and synthesized, followed by complete …

The Role Of School Libraries In Promoting Reading Culture Among Secondary School Students : A Case Study Of Federal Government College, Jos, Diyoshak Rhoda Danladi, Soko Rejoice Yohanna

Library Philosophy and Practice (e-journal)

No abstract provided.

A Generalisable Integrated Natural Capital Methodology For Targeting Investment In Coastal Defence, Katrina J. Davis, Amy Binner, Andrew Bell, Brett Day, Timothy Poate, Siân Rees, Greg Smith, Kerrie Wilson, Ian Bateman

School of Biological and Marine Sciences

No abstract provided.

Emerging Models Of Nitrogen And Carbon Cycling In Engineered Wastewater Treatment Processes, Kartik Chandran

Sustainability Seminar Series

The engineered nitrogen cycle provides a rich framework to study the structure, function and interactions within mixed microbial communities. The knowledge objtained from such studies also allows us to harness the potential of such communities towards achieving multiple goals including the production of clean water, treatment of drinking water and the synthesis of commodity chemicals and fuels, among others. Within the spectrum of engineered nitrogen cycling processes, autotrophic biological nitrogen removal (BNR) offers an energy and resource efficient alternate to conventionally followed approaches. The successful implementation of autotrophic BNR processes is contingent upon the selective retention of aerobic and anaerobic …

Why Teach With Pbl? Motivational Factors Underlying Middle And High School Teachers’ Use Of Problem-Based Learning, Huei-Chen Lee, Margaret R. Blanchard

Interdisciplinary Journal of Problem-Based Learning

This quantitative study examined factors underlying middle and high school teachers’ choices about whether to use problem-based learning (PBL). Survey items measured respondents’ perceived competence, autonomy, and relatedness, and the value and costs they placed on implementing PBL. Teachers who have taught with PBL (n = 126) had significantly more formal PBL professional development, higher levels of perceived competence and value for this pedagogy, perceived more support from peers, and perceived lower costs than did the non–PBL use teachers (n = 30). Findings highlight the importance of formal PBL professional development in increasing teachers’ intention to implement PBL …

Developing Clinical Reasoning Skills In Teacher Candidates Using A Problem-Based Learning Approach, Terry L. Goodin, Nancy G. Caukin, Heather K. Dillard

Interdisciplinary Journal of Problem-Based Learning

In 2013, the Educational Leadership Department at Middle Tennessee State University (MTSU) implemented a redesign of the teacher preparation program to transition from a traditional on-campus model to one delivered both on-campus and in off-campus school sites while using a problem-based learning method. This new program closely follows the medical school model of residency experiences coupled with problem-based learning events. This article describes the problembased learning process used in this program, comparing it with the early versions of medical school problem-based learning that encouraged the development of “clinical reasoning” skills. Similarities and differences are highlighted, along with key components of …

Managing Risk In Grazing Operations, Christopher D. Teutsch, Kenneth H. Burdine

Kentucky Grazing Conference

Risk is an inherent part of agricultural production systems. Crane and coworkers (2013) identified five primary areas of risk in grazing operations: 1) MARKETING risk, 2) PRODUCTION risk, 3) LEGAL risk, 4) HUMAN risk, and FINANCIAL risk. These types of risk are described in the accompanying publication entitled “Controlling Risk in Grazing-Based Production Systems” by J. Parsons. This article will discuss the risk associated with “production” in grazing systems, focusing specifically on managing drought in grass based production operations.

Keys To Optimizing Profitability In Cow-Calf Production -- Rooster's Beef, 3 Generations Of Farming & Beef, William Slaton, Becky Slaton

Kentucky Grazing Conference

Rooster's Beef ultimately began with our family farm -Rocky Bluff Farm - now owned by William and Becky Slaton. It is the cattle producer for our beef sold. The farm is named after two Natural Rock Formations on our property. We have several acres of pasture and including some wooded acres. With rotational grazing and intense management, we are able to have 65 cows in a spring calving group, 15 cows in a fall calving group, 3 bulls, 13 replacement heifers, unweaned calves and 12 calves on finisher feed. We also rent ground to raise and put up our own …

Grass Finished Beef: Melding Production And Marketing [1], Michael Palmer, Stacie Palmer

Kentucky Grazing Conference

Palmer Farms Beef is a family farm near Murray KY, owned by Michael and Stacie Palmer. We produce, and retail around 40 beef per year.

Grass Finished Beef: Melding Production And Marketing [2], Todd Clark

Kentucky Grazing Conference

No abstract provided.

Turning Grass Into Cash With Small Ruminants, Kenneth Andries

Kentucky Grazing Conference

As agriculture continues to change, it is important to consider sustainability before starting or expanding any enterprise. One critical factor in any animal agriculture enterprise is controlling feeding costs. Most research indicates feeding is the largest expenses in any livestock enterprise. However, nutrition is critical to overall productivity and the income of the enterprise. Because of this, producers need to find ways to improve nutrient availability while minimizing costs to optimize production and profitability for their livestock enterprise.

Grazing Dairies: Challenges And Opportunities, Howard Straub Iii

Kentucky Grazing Conference

No abstract provided.

Considerations For Making A Profit With Stocker Cattle, Jeff Lehmkuhler

Kentucky Grazing Conference

The southeast is home to more than 7.3 million beef cows (USDA 2018). At an estimated 80% weaning rate and 20% heifer retention, the southeast region would be expected to produce more than 4.6 million feeder calves that would go to market in 2018. The cow-calf industry in the region provides an opportunity for the stocker and backgrounding operations to co-exist. Much of the land in the region is best suited for forage and pasture production, which at the current moment, provides a low cost feed for adding pounds to light weight feeder cattle. Yet, the stocker and backgrounding segments …

Measuring Profitability In Grazing Operations, Kenneth H. Burdine

Kentucky Grazing Conference

When producers make investments in extending their grazing season, they do so in order to obtain an economic benefit. These benefits usually include a reduction in the number of days that stored feed (typically hay) is fed, an increase in carry capacity or stocking rate, or an increase in production level (rates of gain, weaning weights, etc). While all of these are potential benefits of improved grazing systems, a reduction in winter feeding days is often the simplest way to start. When the grazing season is extended, winter feeding days are reduced, and this cost savings can be weighed against …

Foreword And Conference Information [2018], S. Ray Smith, Christopher D. Teutsch

Kentucky Grazing Conference

No abstract provided.

Synthesis Of Some Fossils Of Ferrocene Carboxylic Acid And Their Classification Based On Tif Tn, Н Tulakov,, I. Askarov,, Yu. Isaeva,, K. Otaxonov

Scientific journal of the Fergana State University

The synthesis of some ferrocenecarboxylic acid derivatives and assignment of code numbers for them according to the commodity nomenclature of foreign economic activity (CN FEA) is described in the article.

Study Of Speech Familiar Topics Using Artificial Neural Networks, А. Abdukadirov,, D Umurzakov

Scientific journal of the Fergana State University

Create a neural network mode for recognition of separate words solution, analyze training characteristics and behavior of constructed neural network. Target network had to be portable to DSP platforms that define a format of input data.

Comparison Of Theoretical And Experimental Geometric Characteristics Of Betulin, A. Eshimbetov,, Sh Kurbanbaeva,, Sh. Turgunbaev,, A. Xaitbaev

Scientific journal of the Fergana State University

The study of betulin and its derivatives is of great importance, since the programs of mathematical modeling enable a qualitative study of the relationship between structure-spectrum-properties. As a result of the theoretical search, it is possible to determine still non-synthesized highly-biologically active derivatives of betulin

About The Estimate Of The Sum Of The Random Number Of Random Numbers, I. Nematov, S. Kukieva

Scientific journal of the Fergana State University

In this paper we consider the estimate of the maximum of the sums of a random number of independent random variables

One Way To Increase Natural Numbers, A. Yusupova,, S. Uktamova

Scientific journal of the Fergana State University

In this paper we consider one of the convenient methods for computing the multiplication of natural numbers.

The 55 Cancri System Reassessed, Vincent Bourrier, Xavier Dumusque, Caroline Dorn, Gregory W. Henry, Nicola Astudillo-Defru, Javiera Rey, Björn Benneke, Guillaume Hébrard, Christophe Lovis, Brice-Olivier Demory, C. Moutou, David Ehrenreich

Information Systems and Engineering Management Research Publications

Orbiting a bright, nearby star the 55 Cnc system offers a rare opportunity to study a multiplanet system that has a wide range of planetary masses and orbital distances. Using two decades of photometry and spectroscopy data, we have measured the rotation of the host star and its solar-like magnetic cycle. Accounting for this cycle in our velocimetric analysis of the system allows us to revise the properties of the outermost giant planet and its four planetary companions. The innermost planet 55 Cnc e is an unusually close-in super-Earth, whose transits have allowed for detailed follow-up studies. Recent observations favor …

Active Learning Techniques In Automatic Controls, Marco Ciarcià

ASEE Best Practice Series Presentations

No abstract provided.

Improved Modelling Of Wind Turbines On Trains, Mario Andre Hyman

Electronic Theses and Dissertations Archive

Most wind powered electricity generation systems are stationary and heavily dependent on the speed and direction of the wind. Alternatively, the wind displaced by fast moving vehicles and particularly by trains is routinely available in locations worldwide. Previous research has been aimed at designing wind turbine models that maximize the output potential of the system. However, there are significant limitations in those turbine models. For example, i) the total drag force acting on the moving train can be significantly increased, and consequently normal operation can be compromised. The traditional turbine models do not take this effect into consideration; ii) The …

The Minimum Inhibitory Concentration (Mic) Assay With Escherichia Coli: An Early Tier In The Environmental Hazard Assessment Of Nanomaterials?, J Vassallo, A Besinis, R Boden, Rd Handy

School of Engineering, Computing and Mathematics

No abstract provided.

Supporting First-Generation Students’ Adjustment To College With High-Impact Practices, Theresa Conefrey

English

This qualitative case study describes some of the issues faced by incoming first-generation college students at a private, 4-year institution in the northwest. Using constructs drawn from social cognitive theory and social cognitive career theory, it explores how high-impact practices such as learning communities, writing-intensive courses, and ePortfolios might impact first-generation students’ adjustment during their first year of college. The findings of the research on students’ writing in their first-year composition course suggest that the cumulative impact of engaging in multiple high-impact practices improves students’ literacy and study skills. In addition, these educational practices appear to increase students’ self-appraisal of …

Innovation In Pedagogy And Technology Symposium: University Of Nebraska, May 8, 2018, University Of Nebraska

Zea E-Books Collection

Selected Conference Proceedings, Presented by University of Nebraska Online and University of Nebraska Information Technology Services.

University of Nebraska Information Technology Services (NU ITS) and University of Nebraska Online (NU Online) present an education and technology symposium each spring. The Innovation in Pedagogy and Technology Symposium provides University of Nebraska (NU) faculty and staff the opportunity to learn from nationally recognized experts, share their experiences and learn from the initiatives of colleagues from across the system. This event is offered free to NU administrators, faculty and staff free of charge. Tuesday, May 8, 2018 The Cornhusker Marriott, Lincoln, NE

Technology …

Academic Senate - Meeting Minutes, 10/30/2018, Academic Senate

Academic Senate Minutes

No abstract provided.

Academic Senate - Agenda, 10/30/2018, Academic Senate

Academic Senate Agendas

No abstract provided.

Ground-Truthing Social Vulnerability Indices Of Alaska Fishing Communities, Anna Lavoie, Kim Sparks, Stephen Kasperski, Amber Himes-Cornell, Kristin Hoelting, Conor Maguire

All Faculty Scholarship for the College of the Sciences

Community vulnerability is increasingly evaluated through quantitative social indices, typically developed using secondary data sources rather than primary data collection. It is necessary to understand the validity of these indices if they will be used to inform policy and decision making. This paper presents a ground-truthing effort to validate quantitative indices that characterize the well-being of Alaska fishing communities. We utilized ethnographic data collected from 13 representative communities and a capital assets framework to ground-truth the indices, in which qualitative ranks of vulnerability were compared against quantitative indices. The majority (73.8%) of ranks were in complete or moderate agreement and …

A Numerical Study Of The Van Roosbroeck System For Semiconductors, Alan Ghazarians

Master's Theses

Since the 1950s, semiconductors have played a significant and daily role in our lives, as they are the foundation of our computers, phones, and other electronic devices. Aside from their obvious uses, the equations that govern semiconductors have peaked the interest of mathematicians and numerical analysts. In 1950, van Roosbroeck described the fundamental semiconductor device equations as a system of three nonlinear coupled partial di↵erential equations. The van Roosbroeck system poses a challenge numerically because of its strong nonlinearity and coupled equations. Its diculties lie in simultaneously solving drift-di↵usion equations for electrons and holes and using their solutions to solve …