Digital Commons Network^™

Enabling Context-Based Learning With Kportal Webspace Technology, Anand Jeyaraj, Vijay Sethi, Vikram Sethi, Kevin P. Duffy, Berkwood M. Farmer

Management Information Systems Faculty Publications

Recognizing the importance of context-based learning and the general lack of technology applications in the design and development of the ideal and formal curricula, this paper describes an experimental system at a large public university. The authors describe the creation of a contextual environment for introducing concepts related to information security to undergraduate business students using the KPortal (Knowledge Portals) webspace technology that supports dynamic content gathered from various sources automatically. The KPortal webspace rated highly on the various attributes of effective contexts and the characteristics of technologies that enable context-based learning. The flexibility provided by the webspace permitted the …

Mole Street Journal, December 2017, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry

Mole Street Journal

No abstract provided.

Sampling Effort And Uncertainty In Leaf Litterfall Mass And Nutrient Flux In Northern Hardwood Forests, Yang Yang, Ruth D. Yanai, Craig R. See, Mary A. Arthur

Forestry and Natural Resources Faculty Publications

Designs for litterfall sampling can be improved by understanding the sources of uncertainty in litterfall mass and nutrient concentration. We compared the coefficient of variation of leaf litterfall mass and nutrient concentrations (nitrogen, phosphorus, calcium, magnesium, and potassium) at different spatial scales and across years for six northern hardwood species from 23 stands in the White Mountains of New Hampshire, USA. Stands with steeper slopes (P = 0.01), higher elevations (P = 0.05), and more westerly aspect (P = 0.002) had higher interannual variation in litter mass, probably due to a litter trap design that allowed litter …

Discovery Learning With Hierarchy Concept To Improve Analysis Ability And Study Achievement Hydrolysis Subject, Leny Yuliatun, Mohammad Masykuri, Budi Utami

Jurnal Inovasi Pendidikan IPA

The aim of this research is to applied Discovery Learning (DL) by the support of hierarchy concept to improve analysis ability and chemistry study achievement in the Hydrolysis subject at eleventh-grade students of Science 1 of SMA N Karangpandan at the academic year of 2016/2017. This research is using Classroom Action Research which using two cycles. In each cycle has four steps of action, they are planning, implementing, observing, and reflecting. The research subject is the eleventh-grade students of science one which consists of 40 students. The data source is using teacher and students and the data were taken by …

C2: Field Relations, Petrography And Provenance Of Mafic Dikes, Western Maine, David Gibson, Donald Osthoff, Chase Rerrick

New England Intercollegiate Geological Conference 2017

Guidebook for field trips in Western Maine and Northern New Hampshire: New England Intercollegiate Geological Conference, p. 273-286.

Mole Street Journal, October 2017, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry

Mole Street Journal

No abstract provided.

Avoiding The Cubic Equation In Finding The Van Der Waals Fluid's Vapor Pressures, Carl W. David

Chemistry Education Materials

The van der Waals coexistence curve of liquid and vapor volumes as functions of the temperature (all in reduced coordinates) as well as the correspponding vapor pressures at these temperatures, is obtained using SageMath, a symbolic calculus/algebra computer programming language.The lack of correspondence of the coexistence locus’ analytical form as obtained herein and those of Lekner remains disconcerting.

Studying Chromium And Nickel Equivalency To Identify Viable Additive Manufacturing Stainless Steel Chemistries, Zachary T. Hilton, Joseph William Newkirk, Ronald J. O'Malley

Materials Science and Engineering Faculty Research & Creative Works

Chromium and nickel equivalency modeling has long been used in welding to determine the weldability of steel chemistries. A study was conducted to determine the applicability of Cr-Ni modeling to the additive manufacturing process. Many AM methods involve rapid solidification of small melt pools, similar to welding. Chemistries with varying Cr/Ni ratios were selected for use in a selective laser melting process and modeled using known models. Initial results indicate that the standard "safe welding zone" may not directly apply to additive manufacturing. The capability to build with chemistries outside the weldability “safe zone” could result in improved and varied …

Mole Street Journal, August 2017, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry

Mole Street Journal

No abstract provided.

Chemistry, Saint Mary's College Of California

Undergraduate Academic Catalog

No abstract provided.

Computational Study Of Mos2/Hfo2 Defective Interfaces For Nanometer-Scale Electronics, Santosh Kc, Roberto Longo, Robert Wallace, Kyeongjae Cho

Faculty Publications

Atomic structures and electronic properties of MoS2/HfO2 defective interfaces are investigated extensively for future field-effect transistor device applications. To mimic the atomic layer deposition growth under ambient conditions, the impact of interfacial oxygen concentration on the MoS2/HfO2 interface electronic structure is examined. Then, the effect on band offsets (BOs) and the thermodynamic stability of those interfaces is investigated and compared with available relevant experimental data. Our results show that the BOs can be modified up to 2 eV by tuning the oxygen content through, for example, the relative partial pressure. Interfaces with hydrogen impurities as well as various structural disorders …

Impact Of Anthropogenic Disturbance On The Chemistry Of A Small Urban Pond, Susan A. Welch, Brandon C. Mcadams, Steven T. Goldsmith, Annette M. Trierweiler, Justin M. Von Bargen, Kelly M. Deuerling, Anne E. Carey

Geography and Geology Faculty Publications

Mirror Lake, one of the scenic locations on The Ohio State University's campus, experiences an intense bioturbation event as part of an annual tradition revolving around the rivalry football game against the University of Michigan. This tradition involves thousands of students jumping into the lake over one night in the week leading up to the football game.

Water samples were collected from several locations in the lake before, during, and after the Mirror Lake Jump to determine the impact of this event on lake water chemistry. There were significant and systematic increases in the concentrations of Na+, K+, Cl−, …

Mole Street Journal, June 2017, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry

Mole Street Journal

No abstract provided.

Pediatric Leukemia: Diagnosis To Treatment–A Review, Samantha C. Bernard, Ehab H. Abdelsamad, Paisley A. Johnson, Daniel L. Chapman, Madhukiran Parvathaneni

Faculty Works

Leukemia is cancer of the blood and bone marrow, it is the most common cancer found in children and is found to be more than one fourth of pediatric cancers. It causes white blood cells to become abnormal and the body to become weak. This deficiency in the immune system reduces the body's ability to fight infection or simple airborne illnesses, causing extensive treatment of common pathogens and cancer treatment. The present review covers all topics, from diagnosis to treatment of pediatric leukemia, as well as the stages of growth and physiological changes throughout the process. As leukemia has a …

Anion Recognition Of Porphyrin Calixarene Hybrids, Lance Mwangi

Honors Theses

No abstract provided.

Solvation Enhances The Distinction Between Carboxylated Armchair And Zigzag Single-Wall Carbon Nanotubes (Swnt-Cooh), Tapas Kar, Upendra Adhikari, Steve Scheiner, Ajit K. Roy, Renato L. T. Parreira, Pedro A. De S. Bergamo, Giovanni F. Caramori, Felipe S. S. Schneider

Chemistry and Biochemistry Faculty Publications

The effect of various solvents on the structures and properties of carboxylated SWNTs has been explored using the Same Level Different Basis Set approach (SLDB), where B3LYP functional of density functional theory (DFT) was applied. Armchair (4,4) and zigzag (8,0) and (9,0) tubes were considered as the test bed. In order to simulate varying concentration of –COOH groups, one to five acids groups were placed at one end of these tubes. These samples were placed in different solvents (namely, CS2, THF and water) with varying polarity and results were compared with gas-phase properties. Similar to the gas-phase, zigzag tubes also …

Exploring Student Learning In Post-Secondary General Chemistry: Novel Tools For Measuring Linked Concepts And Study Habits, Li Ye

USF Tampa Graduate Theses and Dissertations

This dissertation presents novel tools to help instructors measure students linking of content knowledge and the actions students perform for studying in the context of post-secondary General Chemistry.

The first tool described in this work is Creative Exercises (CEs), an open-ended assessment that has the potential to promote students making connections across the content covered in General Chemistry. Students are given a simple prompt that describes a chemistry situation, and asked to write as many statements as they can that are correct, distinct and relevant to the prompt and the course content. The written responses to CEs from both in-class …

A Qualitative Comparison Of General Chemistry And Advanced Placement Chemistry Students’ Misconceptions Regarding Solution Chemistry, Megan Vandersee

Annual Graduate Student Symposium

There has been much research on student misconceptions regarding the particulate nature of matter and its relation to solution chemistry (e.g. Adadan & Savasci, 2012; Calik & Ayas, 2005; Calik, Ayas, & Coll, 2009; Pinarbasi & Canpolat, 2003; K. J. Smith & Metz, 1996). However, there is a lack of information regarding student misconceptions in areas of solution chemistry such as factors affecting solubility, polarity & molecular interactions and colligative properties. This research compared the misconceptions in solution chemistry held by students who are approaching the end of an Advanced Placement (AP) chemistry course in the high school setting with …

Mole Street Journal, April 2017, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry

Mole Street Journal

No abstract provided.

Assessing Seasonal And Spatial Variability In The Hydrogeochemistry Of Glacial Meltwater In Iceland, Anisha Tuladhar

Masters Theses & Specialist Projects

A detailed comparative geochemical characterization of three different types of Iceland glacial systems was conducted during June, August, and October, 2016. The study was carried out at a total of 11 outlet glacier rivers flowing from the icecaps Vatnajökull, Eyjafjallajökull, and Mýrdalsjökull. A total of 75 grab samples were collected (25 for each sampling period). The hydrogeochemical variations of Icelandic glacial meltwater are influenced by volcanic activity, temporal changes, and geographical location, which differed between the sampling sites within the glaciers and icecaps. Lower pH range, and comparatively higher and variable specific conductivity, SO4, S and F is linked to …

Evaluation Routing Of Reaction Mechanism With Different Colour Mobility Of Graph Labelling, V. Narayanan, J. B. Veera Malini, G. Baskar

Applied Mathematics & Information Sciences

This research paper provides a new platform for the graph labelling method of 3-isobutyl-2,6bis(m-nitrophenyl)-piperidin4-one semicarbazone. A futuristic approach for the synthesised compound has been developed in the graph theory and sequence of reaction mechanism of compound is done through complete tripartite graph accepting continuous monotonic decomposition concepts. In the same way we have desired functional illustration and acceptance of graph theory to chemistry dictionary. Thus the complex compound is enhanced in mathematical theory to correlate the mode of arrangement of compound in graph labelling. The focus of this application is to bridge the qualitative relationship and representation of research compound …

Arts Trade Association Dinner: Speech Research (1963-1967): Article 10, Garry Thomson

Arts Trade Association Dinner: Speech Research (1963-1967)

No abstract provided.

Mole Street Journal, February 2017, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry

Mole Street Journal

No abstract provided.

Daggers Of The Mind, Arthur P. Sullivan, Mary E. Houghtaling

Department of Behavioral Science Publications and Research

The narrator of this story describes working with McGann, a lifelong friend, on creating a robotic therapist, and the consequences of doing so.

Airborne Measurements Of Western U.S. Wildfire Emissions: Comparison With Prescribed Burning And Air Quality Implications, Xiaoxi Liu, L. Gregory Huey, Robert J. Yokelson, Vanessa Selimovic, Isobel J. Simpson, Markus Müller, Jose L. Jimenez, Pedro Campuzano-Jost, Andreas J. Beyersdorf, Donald R. Blake, Zachary Butterfield, Yonghoon Choi, John D. Crounse, Douglas A. Day, Glenn S. Diskin, Manvendra K. Dubey, Edward Fortner, Thomas F. Hanisco, Weiwei Hu, Laura E. King, Lawrence Kleinman, Simone Meinardi, Tomas Mikoviny, Timothy B. Onasch, Brett B. Palm, Jeff Peischl, Ilana B. Pollack, Thomas B. Ryerson, Glen W. Sachse, Arthur J. Sedlacek, John E. Shilling, Stephen Springston, Jason M. St. Clair

Chemistry and Biochemistry Faculty Publications

Wildfires emit significant amounts of pollutants that degrade air quality. Plumes from three wildfires in the western U.S. were measured from aircraft during the Studies of Emissions and Atmospheric Composition, Clouds and Climate Coupling by Regional Surveys (SEAC4RS) and the Biomass Burning Observation Project (BBOP), both in summer 2013. This study reports an extensive set of emission factors (EFs) for over 80 gases and 5 components of submicron particulate matter (PM1) from these temperate wildfires. These include rarely, or never before, measured oxygenated volatile organic compounds and multifunctional organic nitrates. The observed EFs are compared with previous measurements of temperate …

The Relationship Between Recollection, Knowledge Transfer, And Student Attitudes Towards Chemistry, Oluwatobi Omobonike Odeleye

Electronic Theses and Dissertations

Certain foundational concepts, including acid-base theory, chemical bonding and intermolecular forces (IMFs), appear throughout the undergraduate chemistry curriculum. The level of understanding of these foundational concepts influences the ability of students to recognize the relationships between sub-disciplines in chemistry. The purpose of this study was to investigate the relationship between student attitudes towards chemistry and their abilities to recollect and transfer knowledge of IMFs, a foundational concept, to their daily lives as well as to other classes. Data were collected using surveys, interviews and classroom observations, and analyzed using qualitative methods. The data show that while most students were able …

Nitrogen Dynamics And Retention In The River Network Of A Tropical Forest, Luquillo Mountains, Puerto Rico, Richard Brereton

Doctoral Dissertations

This dissertation identifies gaps in the scientific understanding of nutrient cycling, particularly nitrogen (N) cycling, in streams and riparian zones of tropical montane forests, and addresses several of those gaps with original field-based research using study watersheds in the Luquillo Mountains of Puerto Rico as the model system. The Luquillo Mountains have features typical of mature montane tropical forests, such as high background N concentrations in streams and groundwater relative to streams in other biomes. As a USDA Forest Service Experimental Forest, the Luquillo Mountains are accessible to researchers and have abundant monitoring and experimental datasets from which to build …

Surface Chemisty Study Of Monazite Flotation In Coal Refuse Systems, Wencai Zhang

Theses and Dissertations--Mining Engineering

Rare earth mineral recovery from alternative resources such as coal and coal byproducts is increasingly important to provide an opportunity for economic recovery from U.S. sources. Currently, China produces the majority of the 149,000 tons of rare earth elements used annually worldwide of which the U.S. imports 11% or around 16,000 tons. There are no significant mining operations producing rare earth elements in the U.S. However, there are many U.S. sources containing rare earth minerals such as monazite including heavy mineral sand and phosphate operations. Monazite mineral particles of a few microns have also been detected in Fire Clay seam …

Working As Partners: Course Development By A Student–Teacher Team, Charlotta Bengtson, Mikaela Ahlkvist, William Ekeroth, Astrid Nilsen-Moe, Nathalie Proos Vedin, Katerina Rodiuchkina, Sofie Ye, Marcus Lundberg

International Journal for the Scholarship of Teaching & Learning

A first-year undergraduate course at Uppsala University has been redesigned in a process exploring different levels of student participation. In the first part of the project, the student voice was heard through interviews focusing on the role of the course in the degree program. In the second part, a student-teacher team was formed to develop course curriculum and teaching material in partnership. Among the implemented changes were new seminars focusing on conceptual understanding, redesign of all lectures to include active student participation, and a change of the course literature. The redesigned course significantly increased student satisfaction compared to previous years. …

Charles Holmes Herty Papers, Zach S. Henderson Library Special Collections

Finding Aids

Collection contains notebooks, photographs, and published material concerning Charles Homes Herty's 1901 experiments that resulted in the turpentine (or Herty) cup. The experiments were partly conducted on what later became the Georgia Southern University’s Statesboro campus. Includes typescript of "Charles Holmes Herty in Statesboro," by Maxwell Taylor Courson.

Find this collection in the University Libraries' catalog.