Digital Commons Network^™

Understory Community Assembly Following Wildfire In Boreal Forests: Shift From Stochasticity To Competitive Exclusion And Environmental Filtering, Bo Liu, Han Y. H. Chen, Jian Yang

Forestry and Natural Resources Faculty Publications

Understory vegetation accounts for the majority of plant species diversity and serves as a driver of overstory succession and nutrient cycling in boreal forest ecosystems. However, investigations of the underlying assembly processes of understory vegetation associated with stand development following a wildfire disturbance are rare, particularly in Eurasian boreal forests. In this study, we measured the phylogenetic and functional diversity and trait dispersions of understory communities and tested how these patterns changed with stand age in the Great Xing'an Mountains of Northeastern China. Contrary to our expectation, we found that understory functional traits were phylogenetically convergent. We found that random …

Dynamics Of Postfire Aboveground Carbon In A Chronosequence Of Chinese Boreal Larch Forests, Yuan Z. Yang, Wen H. Cai, Jian Yang, Megan White, John M. Lhotka

Forestry and Natural Resources Faculty Publications

Boreal forests store a large proportion of the global terrestrial carbon (C), while wildfire plays a crucial role in determining their C storage and dynamics. The aboveground C (AC) pool is an important component of forest C stocks. To quantify the turning point (transforming from C source to C sink) and recovery time of postfire AC, and assess how stand density affects the AC, 175 plots from eight stand age classes were surveyed as a chronosequence in the Great Xing'an Mountains of Northeast China. Linear and nonlinear regression analyses were conducted to describe postfire AC recovery patterns. The results showed …

The Ages2 (Awards For Geochronology Student Research 2) Program: Supporting Community Geochronology Needs And Interdisciplinary Science, Rebecca M. Flowers, J. Ramón Arrowsmith, Vicki Mcconnell, James R. Metcalf, Tammy M. Rittenour, Blair Schoene

Geosciences Faculty Publications

Geochronology is essential in the geosciences. It is used to resolve the durations and rates of earth processes, as well as test causative relationships among events. Such data are increasingly required to conduct cutting-edge, transformative, earth-science research. The growing need for geochronology is accompanied by strong demand to enhance the ability of labs to meet this pressure and to increase community awareness of how these data are produced and interpreted. For example, a 2015 National Science Foundation (NSF) report on opportunities and challenges for U.S. geochronology research noted: "While there has never been a time when users have had greater …

Search For Leptoquarks Coupled To Third-Generation Quarks In Proton-Proton Collisions At S=13 Tev, Cms Collaboration, J. G. Acosta, S. Oliveros

Faculty and Student Publications (Open Access)

No abstract provided.

Rare Helium-Bearing Compound Feo2he Stabilized At Deep-Earth Conditions, Jurong Zhang, Jian Lv, Hefei Li, Xiaolei Feng, Cheng Lu, Simon A. T. Redferm, Hanyu Liu, Changfeng Chen, Yanming Ma

Physics & Astronomy Faculty Research

There is compelling geochemical evidence for primordial helium trapped in Earth’s lower mantle, but the origin and nature of the helium source remain elusive due to scarce knowledge on viable helium-bearing compounds that are extremely rare. Here we explore materials physics underlying this prominent challenge. Our structure searches in conjunction with first-principles energetic and thermodynamic calculations uncover a remarkable helium-bearing compound FeO2He at high pressure-temperature conditions relevant to the core-mantle boundary. Calculated sound velocities consistent with seismic data validate FeO2He as a feasible constituent in ultralow velocity zones at the lowermost mantle. These mutually corroborating findings establish the first and …

Inclined Massive Planets In A Protoplanetary Disc: Gap Opening, Disc Breaking, And Observational Signatures, Zhaohuan Zhu

Physics & Astronomy Faculty Research

We carry out 3D hydrodynamical simulations to study planet–disc interactions for inclined high-mass planets, focusing on the disc’s secular evolution induced by the planet. We find that, when the planet is massive enough and the induced gap is deep enough, the disc inside the planet’s orbit breaks from the outer disc. The inner and outer discs precess around the system’s total angular momentum vector independently at different precession rates, which causes significant disc misalignment. We derive the analytical formulae, which are also verified numerically, for: (1) the relationship between the planet mass and the depth/width of the induced gap, (2) …

Lower Limb Joint Angle Variability And Dimensionality Are Different In Stairmill Climbing And Treadmill Walking, Peter C. Raffalt, Srikant Vallabhajosula, Jessica Renz, Mukul Mukherjee, Nicholas Stergiou

Journal Articles

The present study tested if the quadratic relationship which exists between stepping frequency and gait dynamics in walking can be generalized to stairmill climbing. To accomplish this, we investigated the joint angle dynamics and variability during continuous stairmill climbing at stepping frequencies both above and below the preferred stepping frequency (PSF). Nine subjects performed stairmill climbing at 80, 90, 100, 110 and 120% PSF and treadmill walking at preferred walking speed during which sagittal hip, knee and ankle angles were extracted. Joint angle dynamics were quantified by the largest Lyapunov exponent (LyE) and correlation dimension (CoD). Joint angle variability was …

Synthesis Of Α-Hydroxyisovaleric Acid (Hiv) And Α-Acetyloxyisovaleric Acid (Ac-Hiv), Precursors Of Aureobasidin B, With Improved Yield, Rani Maharani, Andi Rahim, Herdanu Rizqullah, Nur Muhammad Miftah, Ace Tatang Hidayat, Achmad Zainuddin, Nurlelasari Nurlelasari, Desi Harneti, Unang Supratman

Chimica et Natura Acta

α-Hydroxyisovaleric acid (Ac-Hiv) and α-acetyloxyisovaleric acid (Ac-Hiv) have been successfully synthesized through a diazotisation of amino acid using sodium nitrite with the catalyst of sulfuric acid and acetic acid, respectively. In the synthesis of Hiv, Zubia et al. (2005) mentioned that 3 equivalents of sodium nitrite for the reaction gave the hydroxy acid with a good yield. However, Cohen-Arazi et al. (2008) described that 6 equivalents of sodium nitrite resulted the highest yield. In present study, a variation of equivalents of sodium nitrite (3, 4, 5, 6 eq.) were trialed for the same method of synthesis. Through several experiments, we …

Using A Robot Peer To Encourage The Production Of Spatial Concepts In A Second Language, Cd Wallbridge, Den Berghe R Van, Hernandez D Garcia, J Kanero, S Lemaignan, C Edmunds, T Belpaeme

School of Engineering, Computing and Mathematics

We conducted a study with 25 children to investigate the efectiveness of a robot measuring and encouraging production of spatial concepts in a second language compared to a human experimenter. Productive vocabulary is often not measured in second language learning, due to the diiculty of both learning and assessing productive learning gains. We hypothesized that a robot peer may help assessing productive vocabulary. Previous studies on foreign language learning have found that robots can help to reduce language anxiety, leading to improved results. In our study we found that a robot is able to reach a similar performance to the …

Automatic Trellis Generation For Demodulation Of Faster Than Nyquist Signals, Deepan Govindaraj

Theses

Mobile communication has become one of the most important and fast developing technology in the past couple of decades. Future of telecommunication raises a high demand for higher data rate and system capacity. There are plenty of researches taking place across the world to provide a better service. One such research is Faster than Nyquist signaling and it has grabbed the attention of many researchers in the recent past. In digital communication implemented using Nyquist pulses, the pulse rate is upper-bounded by twice the channel bandwidth. Signaling above this rate results in the loss of pulse orthogonality and introduces ISI. …

Pengaruh Cara Pemberian Pupuk Organik Cair Vinasse Terhadap Pertumbuhan Awal Bawang Dayak (Eleutherine Palmifolia), Rina Ekawati, Lestari Hetalesi Saputri

Jurnal Kultivasi

Pupuk organik bermanfaat untuk meningkatkan kandungan hara, bahan organik tanah, serta memperbaiki sifat fisik, kimia, dan biologi tanah. Vinasse merupakan limbah dari proses pembuatan bioetanol pada industri pengolahan gula, jika telah mengalami proses pengomposan dapat digunakan sebagai pupuk organik cair (POC) vinasse yang dapat meningkatkan pertumbuhan tanaman. Bawang dayak merupakan salah satu tanaman hortikultura yang dapat dijadikan sebagai tanaman berkhasiat obat. Penelitian ini bertujuan untuk mempelajari pengaruh cara pemberian pupuk organik cair vinasse terhadap pertumbuhan awal tanaman bawang dayak. Percobaan ini dilakukan di Politeknik Lembaga Pendidikan Perkebunan (LPP) Yogyakarta, dari bulan Juli hingga November 2018. Penelitian ini menggunakan rancangan acak …

Analisis Kandungan Logam Berat Aluminium (Al), Dan Timbal (Pb) Pada Buah Jambu Biji Varietas Kristal (Psidium Guajava L.) Dan Tanah Di Desa Bumiaji, Kota Batu, Hidayati Karamina, Ariani Trisna Murti, Tri Mudjoko

Jurnal Kultivasi

Bumiaji merupakan kawasan wisata yang terletak di Kota Batu. Dengan suhu mencapai 20oC menyebabkan Bumiaji menjadi tempat pengembangan kawasan yang cocok untuk penanaman tanaman hortikultura contohnya jambu biji varietas kristal. Budidaya jambu biji varietas kristal tidak lepas dengan pemeliharaan tanaman dengan cara pengaplikasian pupuk organik maupun anorganik dan pestisida dalam jumlah banyak dan dalam jangka waktu yang panjang. Usaha-usaha peningkatan hasil produksi di atas ternyata dapat memberikan dampak kurang baik bagi lingkungan sekitar khususnya tanah. Adapun tujuan dari penelitian ini adalah mengetahui seberapa besar jumlah logam berat yang berada pada tanah dan buah jambu biji varietas kristal. Penelitian ini menggunakan …

Pengaruh Pupuk Hayati Majemuk Dan Pupuk Fosfor Terhadap Pertumbuhan Dan Hasil Kedelai Di Inceptisol Jatinangor, Aep Wawan Irwan, Tati Nurmala

Jurnal Kultivasi

Kedelai merupakan salah satu tanaman yang membutuhkan fosfor dalam jumlah besar. Ketersediaan P merupakan faktor pembatas utama pada pertumbuhan dan produksinya. Fosfor tidak banyak tersedia untuk tanaman, sehingga dibutuhkan pupuk hayati yang mengandung mikroorganisme untuk dapat melarutkan fosfor. Penelitian ini bertujuan untuk memperoleh dosis pupuk hayati majemuk dan pupuk P yang efektif dan dapat memberikan pengaruh terbaik terhadap pertumbuhan, komponen hasil, dan hasil tanaman kedelai kultivar Anjasmoro. Penelitian dilakukan pada bulan Maret sampai Juni 2017 di Kebun Percobaan Ciparanje, Fakultas Pertanian Universitas Padjadjaran, dengan ketinggian tempat yaitu ± 780 mdpl. Percobaan dilakukan dengan menggunakan Rancangan Acak Kelompok terdiri dari 9 …

Assessment Of Cooling And Heat Transfer Properties Of Quenchants With Matlab, Lemmy Meekisho, Rosa L. Simencio Otero, Jônatas M. Viscaino, D. Scott Mackenzie, George Totten, Lauralice C.F. Canale

Mechanical and Materials Engineering Faculty Publications and Presentations

There is ongoing interest for evaluating the potential of renewable base stocks, such as vegetable oils, to replace petroleum oils as metal quenchants. Perhaps the most critical part of this process is characterizing and comparing the cooling and heat transfer performance of potential quenchant candidates. In this work, cooling curves of two vegetable oils, palm oil and canola oil, were obtained along with a commercially available conventional and an accelerated petroleum quenchant using the so-called Tensi multiple thermocouple probe, with emphasis on the center probe emulating a small probe concept. The lumped-parameter approach was implemented in the MATLAB environment (Mathworks …

Changing Land-Use From Pinus Elliottii To Eucalyptus Bentamii In Southwest Louisiana Affects Understory Vegetation Richness, Diversity, And Functional Diversity Patterns, Andrea De Stefano

LSU Doctoral Dissertations

In the Western Gulf region of the United States cold-tolerant eucalyptus have been explored as pulpwood feedstock. However, non-native plantations may alter understory species diversity, modifying environmental conditions and soil characteristics. Few studies have compared eucalyptus plantations with other ecosystems to understand the impacts of converting these land uses on understory vegetation in the United States. Three plantations were selected: (1) slash pine (Pinus elliottii) established in 2008, (2) slash pine established in 2013, and (3) and Camden white gum (Eucalyptus benthamii) established in 2013. The objectives of this study were to: (1) investigate potential changes …

Subject Level Clustering Using A Negative Binomial Model For Small Transcriptomic Studies., Qian Li, Janelle R. Noel-Macdonnell, Devin C. Koestler, Ellen L. Goode, Brooke L. Fridley

Manuscripts, Articles, Book Chapters and Other Papers

BACKGROUND: Unsupervised clustering represents one of the most widely applied methods in analysis of high-throughput 'omics data. A variety of unsupervised model-based or parametric clustering methods and non-parametric clustering methods have been proposed for RNA-seq count data, most of which perform well for large samples, e.g. N ≥ 500. A common issue when analyzing limited samples of RNA-seq count data is that the data follows an over-dispersed distribution, and thus a Negative Binomial likelihood model is often used. Thus, we have developed a Negative Binomial model-based (NBMB) clustering approach for application to RNA-seq studies.

RESULTS: We have developed a Negative …

Visibility Of Iranian Lis Departments In Researchgate: An Altmetric Study, Rahim Alijani, Seyedeh Fahimeh Mortazavipour Mrs., Ali Akbar Khasseh

Library Philosophy and Practice (e-journal)

Using an altmetric study, this paper tries to investigate the visibility and activities of Iranian Library and Information Science (LIS) departments in ResearchGate. The research community of this study consisted of faculty members of LIS departments in Iran. Research data were analyzed by Altmetrics indicators from ResearchGate and then it is analyzed by SPSS software. Findings revealed that “University of Isfahan” with the mean score of 14.11 and standard deviation of 6.72 is ranked first and “Islamic Azad University of Hamedan” and “Tabriz University of Medical Sciences” ranked second and third, respectively. Also, the “University of Isfahan” ranked first in …

Social Media Utilisation, Study Habit And Undergraduate Students’ Academic Performance In A University Of Education In Nigeria, Emmanuel Olabanji Obadara Dr, Stephen Olufemi Olaopa Mr

Library Philosophy and Practice (e-journal)

This paper examined the correlation between social media utilisation, study habit and undergraduate students’ academic performance in Tai Solarin University of Education, Ogun State, Nigeria. The study used descriptive survey design. A sample of 2 departments from each of the 4 colleges existed in the university in 2012/2013 session was drawn using simple random sampling technique, Also, a sample 2905 students out 9692 students in the university during the academic session under study was drawn using purposive sampling technique. This comprised the total number of students in all the Departments sampled. The study developed and used a questionnaire tagged “Social …

Internet Of Things: Beginning Of New Era For Libraries, Alka Bansal, Dipti Arora, Alka Suri

Library Philosophy and Practice (e-journal)

Libraries have adopted information technology be that IT-enabled content development, content management tools, content access and delivery tools or long term presentation tools. Libraries are always in the fore front where the adoption and usage of new technologies are concerned. Internet of Things (IoT) is enabling objects to collect data and transfer the data over a network without human intervention by using internet, sensors, and RFID. It is being used in various fields and is still emerging. Various innovative solutions are created. This paper explores the concept of IoT, its historical background and its potential applications in libraries. Some of …

Disrupting Desalination: Novel Energy Efficient Technologies For Hypersaline Brines, Ngai Yin Yip

Sustainability Seminar Series

Management and treatment of hypersaline brines, e.g., produced water from oil and gas extraction, zero liquid discharge effluent, and flue gas desulfurization wastewater, are of growing environmental importance. Prevailing practice of distilling brines is highly energy-intensive and costly because the evaporation of water is enthalpically unfavorable. Here, we present two novel technologies for hypersaline desalination: cascading osmotically mediated reverse osmosis (COMRO) and temperature swing solvent extraction (TSSE). The first technology, COMRO, utilizes the novel design of bilateral countercurrent reverse osmosis stages to lessening the osmotic pressure difference across the membrane, thereby simultaneously depressing the hydraulic pressure needed and reducing energy …

Thucydides And Rationalism A Study Beyond Rational Choice, Spyridon N. Litsas

The Journal of International Relations, Peace Studies, and Development

This article compares two different forms of political rationalism; The well-known Rational Choice Theory and the formula deriving from the Thucydidean analysis in the Peloponnesian War, the Thucydidean Rational Choice Theory. I argue that while Rational Choice Theory is designed to analyse domestic socio-political and economic event, the Thucydidean Rational Choice Theory is the procedure for presenting international analyses instead.

My Experience Teaching General Chemistry To A Student Who Is Visually Impaired, Katherine M E Stewart

Journal of Science Education for Students with Disabilities

This paper summarizes my experience with teaching a first-year, General Chemistry course to a visually impaired student. This includes accommodations and modifications for both the lecture material and the laboratory. Included are also examples of formats and syntax for txt-based quizzes, tests, and laboratory reports, as well as other general accommodations for both the student and the service dog.

Science Instruction For Secondary Students With Emotional Or Behavioral Disorders: A Guide For Curriculum Development, Tal Slemrod, Leah Wood, Shelley Hart, William Coleman

Journal of Science Education for Students with Disabilities

This article provides a step-by-step guide for the organization and development of science lessons and units, to support the academic and behavioral performance of secondary students with challenges with related disabilities. This clinical practice guide provides a process for curriculum development for students with emotional or behavior disorders (EBD) in the science classroom. Steps include recommendations, goals, and examples for administrators and educators to discover appropriate plans and interventions to promote engagement and learning, including supporting success on State mandated High Stakes Assessments.

Implications Of 3-D Printing For Teaching Geoscience Concepts To Students With Visual Impairments, Karen E. Koehler, Tiffany A. Wild, Sean Tikkun

Journal of Science Education for Students with Disabilities

This article presents the results of a study on the use of 3-D printed models in a science classroom for students with visual impairments and examines whether the use of these models impacts student conceptual understanding and misconceptions related to geosciences concepts, specifically plate tectonics.

Data were collected one week prior to instruction, one week after instruction and throughout the 3-week instructional period. Results showed that students with visual impairments held many of the same misconceptions about plate tectonics as students who are typically sighted. All students in this study had fewer misconceptions after the instructional period than they held …

12-11-2018 Swosu Students Scheduled To Complete Degreesafter 2018 Fall Semester, Southwestern Oklahoma State University

THE BARK ARCHIVE 2018

A total of 438 students at Southwestern Oklahoma State University in Weatherford complete requirements for either associate, bachelor’s, master’s or doctoral degrees after the 2018 fall semester.

Circumventing Spatio-Numeric Biases Through Non-Numeric Assessments Of Perceived Causal Strength, Daniel William Czarnowski

Seton Hall University Dissertations and Theses (ETDs)

Knowledge of cause and effect allows individuals to meaningfully interpret the events they perceive in the world, and the understanding of causality is thought to be grounded in the understanding of forces (Wolf, Ritter, & Holmes, 2014). Previous research has linked handedness with both the ability to exert force (e.g., Linkenauger et al., 2005) and causal learning (e.g., Goedert & Czarnowski, 2017). Historically, number lines have been used to assess causality, but because handedness has a strong spatial element, SNARC effects may influence judgments (Fias, 1996). The current experiment replicates previous work by Goedert and Czarnowski (2017) but changes the …

Non-Aqueous Redox Flow Batteries Including 3,7-Perfluoroalkylated Phenothiazine Derivatives, Susan A. Odom, Aman Preet Kaur, Corrine F. Elliott, Matthew D. Casselman

Chemistry Faculty Patents

A non-aqueous redox flow battery includes a negative electrode immersed in a first non-aqueous liquid electrolyte solution, a positive electrode immersed in a second nonaqueous liquid electrolyte solution, and a semi-permeable separator interposed between the negative and positive electrodes, wherein the second the non-aqueous liquid electrolyte solution comprises a compound of the formula...

To see the remainder of this abstract, please download this patent.

Leveraging Student Experience With Water For Active Learning In A Large Introductory Oceanography Classroom, Rebecca Freeman

Earth and Environmental Sciences Faculty Publications

No abstract provided.

Sciadopitys Verticillata (Japanese Umbrella Pine) Id #318, Julian E. John

BIO 140 Arboretum Project

Location: Between Our Lady of Mercy Chapel and McAuley Hall

2018 December 11 - Computation And Research In Data Science (Cards) Minutes, Computation And Research In Data Science, East Tennessee State University

Computation and Research in Data Science (CaRDS) Board Meeting Minutes

No abstract provided.