Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2021

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 3331 - 3360 of 42516

Full-Text Articles in Entire DC Network

Utilization Of Electronic Resources By Library Users In Kwara State University, Nigeria, Abdrahman Atanda Moustapha Nov 2021

Utilization Of Electronic Resources By Library Users In Kwara State University, Nigeria, Abdrahman Atanda Moustapha

Library Philosophy and Practice (e-journal)

ABSTRACT This study investigated utilization of electronic resources by the users in the Kwara State University Library, Nigeria. Cross-sectional survey research design was adopted for the study. The population of the study comprised of 3,670 registered users with the library and a sample of 367 was selected using simple random sampling technique. Questionnaire was used as the instrument for data collection. 367 copies of the questionnaire were administered while 345 were returned which used for the study. The data were analyzed using descriptive statistics for the research questions. The findings showed that all the types of electronic resources listed in …


Volume 8, 2021 Nov 2021

Volume 8, 2021

James Madison Undergraduate Research Journal (JMURJ)

No abstract provided.


The Fierce Green Fire: Vol. 12 Issue 6, Wofford College. Department Of Environmental Studies Nov 2021

The Fierce Green Fire: Vol. 12 Issue 6, Wofford College. Department Of Environmental Studies

The Fierce Green Fire

No abstract provided.


Creating Inclusivity While Providing Accommodations: A Practical Guide To Champion Individuals With (Dis)Abilities On Campus, Amy E. French, Sarah E. Schoper Nov 2021

Creating Inclusivity While Providing Accommodations: A Practical Guide To Champion Individuals With (Dis)Abilities On Campus, Amy E. French, Sarah E. Schoper

Department of Educational Leadership

No abstract provided.


Mgrre_Pureoilscouttickets_Lacomte, A._1_21127077420000, Mgrre Nov 2021

Mgrre_Pureoilscouttickets_Lacomte, A._1_21127077420000, Mgrre

Legacy Scout Tickets from Pure Oil Company

No abstract provided.


Polyglyoxylamides With A Ph-Mediated Solubility And Depolymerization Switch, Quinton E. A. Sirianni, Xiaoli Liang, Georgina K. Such, Elizabeth Gillies Nov 2021

Polyglyoxylamides With A Ph-Mediated Solubility And Depolymerization Switch, Quinton E. A. Sirianni, Xiaoli Liang, Georgina K. Such, Elizabeth Gillies

Chemistry Publications

Self-immolative polymers (SIPs) are characterized by their ability to depolymerize in response to the cleavage of a single end-cap or backbone moiety, making them attractive for numerous applications including sensors, transient plastics, and delivery vehicles. For many applications, it would be desirable to have an SIP capable of depolymerizing selectively under mildly acidic aqueous conditions. However, the poor solubility of most SIPs in water, accompanied by the competing effects of end-cap cleavage and depolymerization mechanisms, has made this a challenge. Here, we describe the development of polyglyoxylamides (PGAms) with pendent amino groups to achieve solubility switching at mildly acidic pH, …


A Mixed-Methods Case Study On Debt Mitigation And Students’ Institutional Perceptions, Dawn S. Medley Nov 2021

A Mixed-Methods Case Study On Debt Mitigation And Students’ Institutional Perceptions, Dawn S. Medley

Dissertations

The purpose of this mixed-methods study was to examine the role of a debt mitigation program as an incentive for adult student reengagement and to ascertain students’ perceptions of the institution after reenrolling in college via the program. The debt mitigation program was the first in the nation to forgive past-due student institutional debt, allowing students to return to the classroom (Pavlik, 2021). More overt student connection supports were designed to engage adult returners in addition to the debt forgiveness component (Itzkowitz, 2018). By dismissing student debt, designing outreach, and creating specific supports, the program was designed to demonstrate institutional …


Some General Aspects Of Exactness And Strong Exactness Of Meets, M. Andrew Moshier, Jorge Picado, Aleš Pultr Nov 2021

Some General Aspects Of Exactness And Strong Exactness Of Meets, M. Andrew Moshier, Jorge Picado, Aleš Pultr

Mathematics, Physics, and Computer Science Faculty Articles and Research

Exact meets in a distributive lattice are the meets Λiai such that for all b, (Λiai) V b = Λi(ai V b); strongly exact meets in a frame are preserved by all frame homomorphisms. Finite meets are, trivially, (strongly) exact; this naturally leads to the concepts of exact resp. strongly exact filters closed under all exact resp. strongly exact meets. In [2], [12] it was shown that the subsets of all exact resp. strongly exact filters are sublocales of the frame of up-sets on a frame, hence frames …


The Imperative For Climate Action At Portland State University, Stephen Percy Nov 2021

The Imperative For Climate Action At Portland State University, Stephen Percy

Office of the President Publications and Presentations

Portland State University President Stephen Percy announces the formation of the Climate Change Initiative.


Charter School Management: Mo Interaction With Educational Inputs And Outcomes, Joseph C. Simmons Nov 2021

Charter School Management: Mo Interaction With Educational Inputs And Outcomes, Joseph C. Simmons

USF Tampa Graduate Theses and Dissertations

This study seeks to understand if the utilization of a management company has any interaction with the socioeconomic status (SES) of students served, the school’s academic performance, the percentage English Language Learners served, the percentage of highly qualified teachers per school site, the amount of student attrition/mobility, or the amount of disciplinary events. Ultimately this study seeks to determine the efficacy and utility of management organization utilization by studying inputs and outputs of Florida charter schools and disaggregating them based on utilization of Charter Management Organizations, Education Management Organizations, or their decision not to utilize a Management Organization. This study …


An Evaluation Of Student Participation In The Student Alumni Association Program At The University Of South Florida, Latoya Wider Nov 2021

An Evaluation Of Student Participation In The Student Alumni Association Program At The University Of South Florida, Latoya Wider

USF Tampa Graduate Theses and Dissertations

This paper is an evaluation of undergraduate college students’ participation in the Student Alumni Association (SAA) at the University of South Florida. I evaluated benefits of participating in the program, why students do not participate in the program, and if participation affected students’ persistence through college. Undergraduate students and alumni who are or once were members of the SAA participated in focus groups and interviews to evaluate their involvement in the program. Questions addressed benefits of being involved in SAA, why students do not participate in SAA, and factors that contribute to students’ involvement or lack of participation in SAA. …


Aiche Virtual Communities Of Practice – Supporting Faculty During The Covid-19 Pandemic, Christi L. Patton (Luks) Nov 2021

Aiche Virtual Communities Of Practice – Supporting Faculty During The Covid-19 Pandemic, Christi L. Patton (Luks)

Chemical and Biochemical Engineering Faculty Research & Creative Works

In response to the COVID-19 pandemic, chemical engineering departments from around the world shifted their course offerings from in-person to online almost instantaneously. The AIChE Education Division immediately responded to this educational shift by developing five Virtual Communities of Practice (VCPs) that allowed faculty to share experiences and best practices as well as provide a network for emotional support. Community creation, methods and materials shared, and surveys related to the impact of this initiative will be discussed.


Testing The Strong Equivalence Principle. Ii. Relating The External Field Effect In Galaxy Rotation Curves To The Large-Scale Structure Of The Universe, Stacy S. Mcgaugh Nov 2021

Testing The Strong Equivalence Principle. Ii. Relating The External Field Effect In Galaxy Rotation Curves To The Large-Scale Structure Of The Universe, Stacy S. Mcgaugh

Faculty Scholarship

Theories of modified gravity generically violate the strong equivalence principle, so that the internal dynamics of a self-gravitating system in freefall depends on the strength of the external gravitational field (the external field effect). We fit rotation curves (RCs) from the SPARC database with a model inspired by Milgromian dynamics (MOND), which relates the outer shape of an RC to the external Newtonian field from the large-scale baryonic matter distribution through a dimensionless parameter e N. We obtain a > 4σ statistical detection of the external field effect (i.e. e N > 0 on average), confirming previous results. We then locate the …


Hα Reverberation Mapping Of The Intermediate-Mass Active Galactic Nucleus In Ngc 4395, Hojin Cho, Jong-Hak Woo, Tommaso Treu, Peter R. Williams, Stephen F. Armen, Aaron J. Barth, Vardha N. Bennert, Wanjin Cho, Alexei V. Filippenko, Elena Gallo, Jaehyuk Geum, Diego González-Buitrago, Kayhan Gültekin, Edmund Hodges-Kluck, John C. Horst, Seong Hyeon Hwang, Wonseok Kang, Minjin Kim, Taewoo Kim, Douglas C. Leonard, Matthew A. Malkan, Raymond P. Remigio, David J. Sand, Jaejin Shin, Donghoon Son, Hyun-Il Sung, Vivian U Nov 2021

Hα Reverberation Mapping Of The Intermediate-Mass Active Galactic Nucleus In Ngc 4395, Hojin Cho, Jong-Hak Woo, Tommaso Treu, Peter R. Williams, Stephen F. Armen, Aaron J. Barth, Vardha N. Bennert, Wanjin Cho, Alexei V. Filippenko, Elena Gallo, Jaehyuk Geum, Diego González-Buitrago, Kayhan Gültekin, Edmund Hodges-Kluck, John C. Horst, Seong Hyeon Hwang, Wonseok Kang, Minjin Kim, Taewoo Kim, Douglas C. Leonard, Matthew A. Malkan, Raymond P. Remigio, David J. Sand, Jaejin Shin, Donghoon Son, Hyun-Il Sung, Vivian U

Physics

We present the results of a high-cadence spectroscopic and imaging monitoring campaign of the active galactic nucleus (AGN) of NGC 4395. High signal-to-noise-ratio spectra were obtained at the Gemini-N 8 m telescope using the GMOS integral field spectrograph (IFS) on 2019 March 7 and at the Keck I 10 m telescope using the Low-Resolution Imaging Spectrometer with slit masks on 2019 March 3 and April 2. Photometric data were obtained with a number of 1 m-class telescopes during the same nights. The narrow-line region (NLR) is spatially resolved; therefore, its variable contributions to the slit spectra make the standard procedure …


Work Environment And The Teacher: A Qualitative Case Study Of Public Secondary Schools In Addis Ababa, Ethiopia, Edomgenet Hiba Issa Nov 2021

Work Environment And The Teacher: A Qualitative Case Study Of Public Secondary Schools In Addis Ababa, Ethiopia, Edomgenet Hiba Issa

The Qualitative Report

This study examined the nexus between the public secondary school teacher and his/her work environment. To capture the nature and substance of this nexus, the study was mainly directed towards answering the following two research questions: Which attributes of work environment matter most to the public secondary school teacher? And why do they matter? The study was conducted on teachers in public secondary schools of Addis Ababa, Ethiopia. It adopted a qualitative case study design where data were collected through semi-structured interviews and then analyzed using a thematic analysis technique. The results show that basic school facilities, teacher-principal and teacher-student …


Riverine And Estuarine Co2-System Studies On The West Coast Of Florida, Christopher S. Moore Nov 2021

Riverine And Estuarine Co2-System Studies On The West Coast Of Florida, Christopher S. Moore

USF Tampa Graduate Theses and Dissertations

Coastal and estuarine acidification impacts ecosystem health and economic resources and has both natural and anthropogenic components (Cai et al., 2021). Riverine input is one of several important factors that can influence acidification in coastal ecosystems. Rivers disgorging into coastal environments can create strong gradients, both spatial and temporal, that make accurate CO2-system characterization challenging. The work described in this thesis provides a baseline CO2-system study of four major rivers that flow into Tampa bay with an emphasis on seasonal change. As a second objective, this thesis examines the effects of HgII additions on CO2-system measurements in organic-rich estuarine waters. …


First Ecological Characterization Of Whip Black Coral Assemblages (Hexacorallia: Antipatharia) In The Easter Island Ecoregion, Southeastern Pacific, Jan M. Tapia-Guerra, Cynthia M. Asorey, Erin E. Easton, Daniel Wagner, Matthias Gorny, Javier Sellanes Nov 2021

First Ecological Characterization Of Whip Black Coral Assemblages (Hexacorallia: Antipatharia) In The Easter Island Ecoregion, Southeastern Pacific, Jan M. Tapia-Guerra, Cynthia M. Asorey, Erin E. Easton, Daniel Wagner, Matthias Gorny, Javier Sellanes

School of Earth, Environmental, & Marine Sciences Faculty Publications

One of the main priorities of marine scientific research is to provide practical information and guidance for biodiversity conservation and management. In this context, the identification of key and fragile habitat-forming species is particularly important. Despite their ecological importance, whip corals in the order Antipatharia remain poorly studied around the world, and especially in the South Pacific. During recent expeditions to explore mesophotic and deep benthic habitats around Rapa Nui (Easter Island), dense assemblages of whip black corals were observed in situ. We here report the first detailed description of the distribution and abundance of these black coral assemblages …


Magnetic Dichroism In Few-Photon Ionization Of Polarized Atoms, B. P. Acharya, M. Dodson, S. Dubey, K. L. Romans, A. H.N.C. De Silva, K. Foster, O. Russ, K. Bartschat, N. Douguet, Daniel Fischer Nov 2021

Magnetic Dichroism In Few-Photon Ionization Of Polarized Atoms, B. P. Acharya, M. Dodson, S. Dubey, K. L. Romans, A. H.N.C. De Silva, K. Foster, O. Russ, K. Bartschat, N. Douguet, Daniel Fischer

Physics Faculty Research & Creative Works

We consider few-photon ionization of atomic lithium by linearly polarized femtosecond laser pulses and demonstrate that asymmetries of the electron angular distribution can occur for initially polarized (2p, m=+1) target atoms. The dependence of the photoelectron emission angle relative to the electric field direction is investigated at different laser intensities and wavelengths. The experimental spectra show excellent agreement with numerical solutions of the time-dependent Schrödinger equation. In the perturbative picture, the angular shift is traced back to interferences between partial waves with mean magnetic quantum number (m)≠0. This observation allows us to obtain quantum mechanical information on the final electronic …


Silver Bow Creek/Butte Area Npl Site Butte Priority Soils Operable Unit, Pioneer Technical Services, Inc. Nov 2021

Silver Bow Creek/Butte Area Npl Site Butte Priority Soils Operable Unit, Pioneer Technical Services, Inc.

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.


Exposure Of Predatory And Scavenging Birds To Anticoagulant Rodenticides In France: Exploration Of Data From French Surveillance Programs, Meg-Anne Moriceau, Sébastien Lefebvre, Isabelle Fourel, Etienne Benoit, Florence Buronfosse-Roque, Pascal Orabi, Barnett A. Rattner, Virginie Lattard Nov 2021

Exposure Of Predatory And Scavenging Birds To Anticoagulant Rodenticides In France: Exploration Of Data From French Surveillance Programs, Meg-Anne Moriceau, Sébastien Lefebvre, Isabelle Fourel, Etienne Benoit, Florence Buronfosse-Roque, Pascal Orabi, Barnett A. Rattner, Virginie Lattard

United States Geological Survey: Staff Publications

Wild raptors are widely used to assess exposure to different environmental contaminants, including anticoagulant rodenticides (ARs). ARs are used on a global scale for rodent control, and act by disruption of the vitamin K cycle that results in haemorrhage usually accompanied by death within days. Some ARs are highly persistent and bioaccumulative, which can cause significant exposure of non-target species.We characterized AR exposure in a heterogeneous sample of dead raptors collected over 12 years (2008–2019) in south-eastern France. Residue analysis of 156 liver samples through LC-MS/MS revealed that 50% (78/156) were positive for ARs, with 13.5% (21/156) having summed second-generation …


Ramon (Brosimun Alicastrum) Foliage As Supplement For Lactating Dual Purpose Cows, Carlos A. Sandoval-Castro, R. Cetina, I. Pérez, Luis Ramírez-Avilés Nov 2021

Ramon (Brosimun Alicastrum) Foliage As Supplement For Lactating Dual Purpose Cows, Carlos A. Sandoval-Castro, R. Cetina, I. Pérez, Luis Ramírez-Avilés

IGC Proceedings (1977-2023)

The objective of the present study was to asses the value of ramón (Brosimun alicastrum) foliage as a N-source in replacement of soybean-N in lactating dual purpose cows (Bos indicus x B. taurus). Four lactating cows were used in a latin rectangle design. Ramón was included to replace 0, 33, 66 and 100 % of the soybean-N contained in the supplement. Basal diet was fresh “Taiwán” a cultivar of Elephant grass (Pennisetum purpureum) fed ad libitum. Basal and total dry matter intake, digestibility (total fecal collection), saleable and calf suckled milk yields, and …


Dry Matter Yield, In Vitro Digestibility, Protein And Fiber Composition Of 'Tifton 9' Bahiagrass (Paspalum Notatum) At Six Maturities, J. M. B. Vendramini, C. M. Haddad, Carlos G. S. Pedreira Nov 2021

Dry Matter Yield, In Vitro Digestibility, Protein And Fiber Composition Of 'Tifton 9' Bahiagrass (Paspalum Notatum) At Six Maturities, J. M. B. Vendramini, C. M. Haddad, Carlos G. S. Pedreira

IGC Proceedings (1977-2023)

The objective of this research was to evaluate dry matter yield, in vitro digestibility, and the concentrations of protein and cell wall components in 'Tifton 9’clipped at six maturities. Herbage was cut at the age of 20, 27, 34, 41, 48 and 55 days. The experimental design was a randomized complete block with six trataments (ages) and four replications. Dry matter yield and acid detergent fiber ranged from 188 g m-2, to 593 g m-2 and 386.9 g kg-1 to 375.1 g kg-1 respectively, with the cubic regression model having the best fit (P< 0.05). Concentrations of crude protein decreased linearly (P< 0.05) from 121 to 69 g kg-1. …


In Situ Degradability Of Hand Harvested Or Extrusa Samples Of Tanzania Grass (Panicum Maximum, Jacq.), T. T. Berchielli, A. K. D. Salman, R. N. Silveira, W. V. B. Soares, J. R. Nogueira, S. N. Kronka Nov 2021

In Situ Degradability Of Hand Harvested Or Extrusa Samples Of Tanzania Grass (Panicum Maximum, Jacq.), T. T. Berchielli, A. K. D. Salman, R. N. Silveira, W. V. B. Soares, J. R. Nogueira, S. N. Kronka

IGC Proceedings (1977-2023)

In order to compare the in situ degradability of tanzania grass samples obtained as by extrusa or hand plucked, three ruminal fistulated cows were used in a completely randomized block design with split-plot scheme. Five grams of extrusa or hand harvested grasses were placed in nylon bags rumen incubated during 3, 6, 12, 24, 48, 96 and 120 hours. The degradability of DM, CP, NDF and ADF were, in this sequence, 62.59, 80.88, 50.73 and 46.65%, for hand harvested grass; and 79.53, 90.97, 71.21 and 65.68%, for extrusa. In situ degradability data of hand harvested samples were not reliable.


Herbivore Preference For Afternoon- And Morning-Cut Forages And Adoption Of Cutting Management Strategies, H. F. Mayland, J. C. Burns, D. S. Fisher, Glenn E. Shewmaker, R. Carlstrom, D. S. Cash Nov 2021

Herbivore Preference For Afternoon- And Morning-Cut Forages And Adoption Of Cutting Management Strategies, H. F. Mayland, J. C. Burns, D. S. Fisher, Glenn E. Shewmaker, R. Carlstrom, D. S. Cash

IGC Proceedings (1977-2023)

Photosynthesizing forage plants accumulate total nonstructural carbohydrates (TNC) during daylight, but then TNC concentrations are reduced during the night. Afternoon-cut forage (PM) has greater TNC value and thus economic value, than morning-cut (AM). Livestock prefer PM-cut hay and this can be readily demonstrated by offering animals a choice of hays cut in PM and AM. Alfalfa growers in the western United States are readily adopting PM-cutting technology to increase profits.


Near Infra-Red Measurement Of Nonstructural Carbohydrates In Alfalfa Hay, H. F. Mayland, J. C. Burns, D. S. Fisher, Glenn E. Shewmaker Nov 2021

Near Infra-Red Measurement Of Nonstructural Carbohydrates In Alfalfa Hay, H. F. Mayland, J. C. Burns, D. S. Fisher, Glenn E. Shewmaker

IGC Proceedings (1977-2023)

Recently documented benefits from afternoon versus morning cut forage have encouraged laboratory reporting of total nonstructural carbohydrate (TNC) values as part of forage quality testing. Our objective was to determine if infra-red spectroscopy (NIRS), which is being used in many forage testing labs, could be reliably used to quantify forage sugars in hay samples. We used two alfalfa (Medicago sativa L.) sample populations that were analyzed by wet chemistry for sugars and scanned by NIRS. The first set consisted of field-dried hay samples that were oven dried at 70oC and the second consisted of fresh, freeze-dried samples. …


Preservice Elementary Teachers’ Beliefs About The Role Of Definition In The Learning Of Mathematics, Dana C. Cox, Suzanne Harper, Jane M. Keiser Nov 2021

Preservice Elementary Teachers’ Beliefs About The Role Of Definition In The Learning Of Mathematics, Dana C. Cox, Suzanne Harper, Jane M. Keiser

Journal of Educational Research and Innovation

Answering a call to emphasize the act of defining over the learning of definitions, we have shifted the content of a geometry course for preservice elementary teachers (PSETs) away from comparing and applying pre-written classification structures to classroom episodes centered on authoring definitions for special quadrilaterals. PSETs complete activities using geometry software, and collaboratively create definitions for specific quadrilaterals. In order to fully understand the potential of this curricular shift, we asked preservice elementary mathematics teachers’ to share their perceptions of the process of writing mathematical definitions. Data from participant reflections were analyzed for themes related to mathematical definition and …


De Finetti’S Theorem In Categorical Probability, Tobias Fritz, Tomáš Gonda, Paolo Perrone Nov 2021

De Finetti’S Theorem In Categorical Probability, Tobias Fritz, Tomáš Gonda, Paolo Perrone

Journal of Stochastic Analysis

No abstract provided.


Michael Milken, Kevin R. Douglas Nov 2021

Michael Milken, Kevin R. Douglas

Tennessee Journal of Law and Policy

No abstract provided.


Intake And Qualitative Aspects Of Guinea Grass Grazed By Sheep Over Three Different Seasons, Willem A. Van Niekerk Nov 2021

Intake And Qualitative Aspects Of Guinea Grass Grazed By Sheep Over Three Different Seasons, Willem A. Van Niekerk

IGC Proceedings (1977-2023)

The objective of this study was to determine the influence of season on intake by sheep as well as certain selected qualitative characteristics of Panicum maximum (cv Gatton) (Guinea grass) at the mature growing stage. The lower DM content of the spring and summer grass (41.6 and 40.2%) did not hamper DOMI (48.1 and 26.7 W0.75/d), respectively. The N concentration of the spring and summer grass was well within the limit required for optimal rumen microbial production (1.8 - 2.0%). The high cell wall components of the winter grass resulted most probably in a significant lower IVDOM value …


Identification And Quantification Of N-Alkanes In Three Tropical Grasses, T. C. M. Genro, Ê. R. Prates, L. R. L. De S. Thiago, M. Herrero, V. Sabatel Nov 2021

Identification And Quantification Of N-Alkanes In Three Tropical Grasses, T. C. M. Genro, Ê. R. Prates, L. R. L. De S. Thiago, M. Herrero, V. Sabatel

IGC Proceedings (1977-2023)

The main goal of this paper was to quantify the profile of n-alkanes in three tropical grasses. Hand plucking samples to simulate grazing were taking from Brachiaria brizantha cv. Marandu, Panicum maximum cv. Mombaça and Pennisetum purpureum cv. Cameroon. These samples were collected from an experiment established to assess intensive beef production from grasses throughout the year, under rotational grazing. Rotation order through the paddocks remained constant, with 30 days of rest after each grazing bout (16 paddocks, 2 days of grazing). Profiles of n-alkanes were analysed in three separate periods of the year: in the middle of the dry …