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Articles 2881 - 2910 of 7198
Full-Text Articles in Entire DC Network
An Evaluation Of The Educational Impact Of College Campus Visits:A Randomized Experiment, Elsie Swanson, Katherine Kopotic, Gema Zamarro, Jonathan Mills, Jay Greene, Gary Ritter
An Evaluation Of The Educational Impact Of College Campus Visits:A Randomized Experiment, Elsie Swanson, Katherine Kopotic, Gema Zamarro, Jonathan Mills, Jay Greene, Gary Ritter
Education Reform Faculty and Graduate Students Publications
We hypothesize that a lack of experience with college poses a non-trivial barrier to college access for historically underrepresented students. We study whether visits to a college campus during the eighth grade can reduce these psychological barriers to college access. Using an experimental design, we study whether college visits affect students’ knowledge about college, postsecondary intentions, college-going behaviors, academic engagement, and ninth grade course enrollment decisions. We recruited 885 students across 15 schools who participated in our project during the academic year 2017-2018. We randomized students within schools to either a treatment or control condition. Students in the control condition …
Mole Street Journal, February 2019, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry
Mole Street Journal, February 2019, University Of Arkansas, Fayetteville. Dept. Of Chemistry And Biochemistry
Mole Street Journal
No abstract provided.
Astronomy For Educators, Daniel E. Barth
Astronomy For Educators, Daniel E. Barth
Open Educational Resources
Astronomy for Educators provides new and accomplished K-12 instructors with concepts and projects for low-cost, high-impact STEM classroom instruction that is built around the National Academies National Research Council's K-12 Framework for Science Education.
Little Race Or Gender Bias In An Experiment Of Initial Review Of Nih R01 Grant Proposals, Patrick S. Forscher, William T.L. Cox, Markus Brauer, Patricia G. Devine
Little Race Or Gender Bias In An Experiment Of Initial Review Of Nih R01 Grant Proposals, Patrick S. Forscher, William T.L. Cox, Markus Brauer, Patricia G. Devine
Psychological Science Faculty Publications and Presentations
Many granting agencies allow reviewers to know the identity of a proposal’s Principal Investigator (PI), which opens the possibility that reviewers discriminate on the basis of PI race and gender. We investigated this experimentally with 48 NIH R01 grant proposals, representing a broad spectrum of NIH-funded science. We modified PI names to create separate White male, White female, Black male, and Black female versions of each proposal, and 412 scientists each submitted initial reviews for three proposals. We find little to no race or gender bias in initial R01 evaluations, and additionally find that any bias that might have been …
Annual Report, 2019, University Of Arkansas, Fayetteville. Dale Bumpers College Of Agricultural, Food And Life Sciences. Dept. Of Biological And Agricultural Engineering
Annual Report, 2019, University Of Arkansas, Fayetteville. Dale Bumpers College Of Agricultural, Food And Life Sciences. Dept. Of Biological And Agricultural Engineering
Biological and Agricultural Engineering Department Annual Report
No abstract provided.
Review, Winter-Spring 2018-2019, University Of Arkansas, Fayetteville. School Of Architecture
Review, Winter-Spring 2018-2019, University Of Arkansas, Fayetteville. School Of Architecture
Re:View
No abstract provided.
Arkansas Women's Cross Country Media Guide, 2019, University Of Arkansas, Fayetteville. Athletics Media Relations
Arkansas Women's Cross Country Media Guide, 2019, University Of Arkansas, Fayetteville. Athletics Media Relations
Arkansas Women's Cross Country
No abstract provided.
Annual Report, 2018-2019, University Of Arkansas, Fayetteville. Graduate School And International Education
Annual Report, 2018-2019, University Of Arkansas, Fayetteville. Graduate School And International Education
Graduate School and International Education Annual Report
No abstract provided.
Undergraduate Catalog Of Studies, 2018-2019, University Of Arkansas, Fayetteville
Undergraduate Catalog Of Studies, 2018-2019, University Of Arkansas, Fayetteville
Undergraduate Catalog of Studies
No abstract provided.
Ozark Historical Review, 2019, University Of Arkansas, Fayetteville. Department Of History
Ozark Historical Review, 2019, University Of Arkansas, Fayetteville. Department Of History
The Ozark Historical Review
No abstract provided.
Army Rotc Annual Program Report, 2018-2019, University Of Arkansas, Fayetteville. Army Rotc
Army Rotc Annual Program Report, 2018-2019, University Of Arkansas, Fayetteville. Army Rotc
Army ROTC Annual Program Report
No abstract provided.
Arkansas Men's Golf Record Book, 2018-2019, University Of Arkansas, Fayetteville. Athletics Media Relations
Arkansas Men's Golf Record Book, 2018-2019, University Of Arkansas, Fayetteville. Athletics Media Relations
Arkansas Men's Golf
No abstract provided.
State Of The Department Report, 2018-2019, University Of Arkansas, Fayetteville. Department Of Industrial Engineering.
State Of The Department Report, 2018-2019, University Of Arkansas, Fayetteville. Department Of Industrial Engineering.
Industrial Engineering Annual Report
No abstract provided.
Graduate Catalog Of Studies, 2018-2019, University Of Arkansas, Fayetteville
Graduate Catalog Of Studies, 2018-2019, University Of Arkansas, Fayetteville
Graduate School Catalog of Studies
No abstract provided.
The Reproductive Season Of The Highland Stoneroller, Campostoma Spadiceum, Evidenced By Museum Specimens, C. Renn Tumlison, Henry Robison, Grace Wills
The Reproductive Season Of The Highland Stoneroller, Campostoma Spadiceum, Evidenced By Museum Specimens, C. Renn Tumlison, Henry Robison, Grace Wills
Journal of the Arkansas Academy of Science
The Highland Stoneroller (Campostoma spadiceum) was described as a distinct species in 2010. Since then, the only study specific to this species is a survey of distribution, and nothing is known about reproduction. We examined 134 lots including 315 specimens of C. spadiceum housed in the Henderson State University collection of fishes to evaluate the timing of reproductive events. We dissected individuals to reveal sex and reproductive status. Females as small as 49 mm total length were able to yolk eggs, and follicles were in development by October. Ripe eggs were present in specimens collected from January through …
Journal Of The Arkansas Academy Of Science - Volume 73, 2019, Academy Editors
Journal Of The Arkansas Academy Of Science - Volume 73, 2019, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Energy Content Of Seeds Of Texas Doveweed (Croton Texensis) From The Diet Of Mourning Doves (Zenaida Macroura) From Southeastern New Mexico, John L. Hunt, Matthew E. Grilliot, Troy L. Best, Collin S. Deen, Dixie Lozano-Lopez, Emily R. Neilson, Taytumn R. Schlegel-Ridgway
Energy Content Of Seeds Of Texas Doveweed (Croton Texensis) From The Diet Of Mourning Doves (Zenaida Macroura) From Southeastern New Mexico, John L. Hunt, Matthew E. Grilliot, Troy L. Best, Collin S. Deen, Dixie Lozano-Lopez, Emily R. Neilson, Taytumn R. Schlegel-Ridgway
Journal of the Arkansas Academy of Science
We analyzed the energy content of seeds of Texas doveweed (Croton texensis) obtained from the crops of mourning doves (Zenaida macroura) collected from plains-mesa sand-scrub habitat in Eddy and Lea counties, New Mexico. Seeds were removed from crops and dried for 48 hours at 60°C to remove moisture and to standardize masses. Seeds were then analyzed for gross caloric value (i.e., energy content) in an oxygen bomb calorimeter. Energy content of seeds of Texas doveweed was greater than many seeds previously reported from the diet of mourning doves.
Vertebrate Natural History Notes From Arkansas, 2019, C. Renn Tumlison, Chris Mcallister, Henry Robison, Matt Connior, Ron Redman, Stan Trauth, Paul Port
Vertebrate Natural History Notes From Arkansas, 2019, C. Renn Tumlison, Chris Mcallister, Henry Robison, Matt Connior, Ron Redman, Stan Trauth, Paul Port
Journal of the Arkansas Academy of Science
Important observations of natural history often go unreported because they are not part of larger studies, but small details can provide insights that lead to interesting questions about ecological relationships or environmental change. We have compiled recent important observations of distribution, deformities, foods, parasites, and reproduction of various vertebrates. Included are a new record of Lake Sturgeon (Acipenser fulvescens), a new size record of mudpuppy (Necturus louisianensis), and a second observation of bilateral gynandromorphism in a Northern Cardinal (Cardinalis cardinalis). These unique observations continue to grow knowledge of vertebrate biology in Arkansas.
Proteomics Of Carbon Fixation Energy Sources In Halothiobacillus Neapolitanus, Jonathan Hunter, Maria Marasco, Ilerioluwa Sowande, Newton P. Hilliard Jr.
Proteomics Of Carbon Fixation Energy Sources In Halothiobacillus Neapolitanus, Jonathan Hunter, Maria Marasco, Ilerioluwa Sowande, Newton P. Hilliard Jr.
Journal of the Arkansas Academy of Science
Through the use of proteomics, it was uncovered that the autotrophic, aerobic purple sulfur bacterium Halothiobacillus neapolitanus displays changes in cellular levels of portions of its carbon dioxide uptake and fixation mechanisms upon switch from bicarbonate to CO2(g) as carbon source. This includes an increase in level of a heterodimeric bicarbonate transporter along with a potential switch between form I and form II of RubisCO. Additional changes are seen in several sulfur oxidation pathways, which may indicate a link between sulfur oxidation pathways as an energy source and carbon uptake/fixation mechanisms.
History And Current Status Of The Inca Dove (Columbina Inca) In Arkansas, Ragupathy Kannan, Jack Jackson, Ethan Brooks
History And Current Status Of The Inca Dove (Columbina Inca) In Arkansas, Ragupathy Kannan, Jack Jackson, Ethan Brooks
Journal of the Arkansas Academy of Science
Formerly a bird of Central America, Mexico, and the southwestern United States, the Inca Dove (Columbina inca) has been expanding northward across North America in the past few decades. It first appeared in Arkansas on October 26, 1968 in Saratoga, Howard County. Since then, the statewide range has grown to include at least 36 of 75 counties and is expanding. With the use of Christmas Bird Counts, Breeding Bird Surveys, and two citizen science sources, eBird and AR-Birds, we compiled 368 records of the species in the state. Inca Doves were observed year-round in Arkansas and are expanding …
Long-Tailed Weasel (Mustela Frenata) Distribution Survey In Arkansas: Challenges In Detecting A Rare Species, Suzanne D. Johnston, D. Blake Sasse, Robert E. Kissell Jr.
Long-Tailed Weasel (Mustela Frenata) Distribution Survey In Arkansas: Challenges In Detecting A Rare Species, Suzanne D. Johnston, D. Blake Sasse, Robert E. Kissell Jr.
Journal of the Arkansas Academy of Science
Long-tailed weasels (Mustela frenata) have one of the widest distributions of mustelids in the western hemisphere and were distributed across a majority of the American continents ranging from Canada through the contiguous United States, Mexico, and into northern South America. However, on a local scale they are considered uncommon and rare. We assessed the distribution of long-tailed weasels across Arkansas to determine occupancy in each ecoregion of Arkansas, and determined the detectability on two local, adjacent sites. No long-tailed weasels were detected within the ecoregions, but the species was detected with intensive sampling on one local site. It …
A Tale Of Two Sylamores: Understanding Relationships Among Land Use, Nutrients, And Aquatic Communities Across A Subsidy-Stress Gradient, Danielle Braund, Andrew Feltmann, George Gavrielides, Katherine Lang, Jennifer Main, Anastasia Mogilevski, Justin Mosbey, Rebecca Relic, Calvin Rezac, Brianna Trejo, Ginny Adams, Steven R. Adams
A Tale Of Two Sylamores: Understanding Relationships Among Land Use, Nutrients, And Aquatic Communities Across A Subsidy-Stress Gradient, Danielle Braund, Andrew Feltmann, George Gavrielides, Katherine Lang, Jennifer Main, Anastasia Mogilevski, Justin Mosbey, Rebecca Relic, Calvin Rezac, Brianna Trejo, Ginny Adams, Steven R. Adams
Journal of the Arkansas Academy of Science
Agricultural land use is known to degrade aquatic systems with high inputs of nutrients, sediments, and pesticides. Increased nutrients can lead to increased algal growth and thus possible hypoxic conditions in slow moving water, while increased sediment loads have been shown to obstruct light and reduce substrate stability. These conditions negatively impact primary producers, macroinvertebrates, and fish. However, small-scale changes in land use can subsidize an aquatic ecosystem instead, where an increase in nutrients allows nutrient-limited biota to flourish, and minor increases in sedimentation may help support populations of collector-filterers. The stimulation in performance caused by small disturbances is part …
A Dobsonfly, Corydalus Cornutus (Megaloptera: Corydalidae), From Arkansas With Aberrant Mandibles, David E. Bowles
A Dobsonfly, Corydalus Cornutus (Megaloptera: Corydalidae), From Arkansas With Aberrant Mandibles, David E. Bowles
Journal of the Arkansas Academy of Science
No abstract required for general note.
Plains Spotted Skunk Pelt Purchase Trends In The Ozarks And Ouachitas, 1943-1990, D. Blake Sasse
Plains Spotted Skunk Pelt Purchase Trends In The Ozarks And Ouachitas, 1943-1990, D. Blake Sasse
Journal of the Arkansas Academy of Science
The Plains spotted skunk (Spilogale putorius interrupta) is a small carnivore that has experienced population declines across much of its range and is currently being considered for listing as an endangered species. I utilized harvest data on pelts from the Ozarks of Missouri and Arkansas and the Ouachita mountains in Arkansas that were purchased by fur dealers from 1943-1990 to examine trends in harvest levels over time. Purchases in all three regions declined in the late 1940s and early 1950s, but purchases in the Arkansas returned to near or at historic levels in the early 1960s and the …
Bilateral Diaphyseal Chondrodysplasia And Polymorphic Osteodysplasia Of The Tibiofibulas In A Southern Leopard Frog, Lithobates Sphenocephalus (Amphibia: Anura: Ranidae), Stanley E. Trauth, Malcolm L, Mccallum
Bilateral Diaphyseal Chondrodysplasia And Polymorphic Osteodysplasia Of The Tibiofibulas In A Southern Leopard Frog, Lithobates Sphenocephalus (Amphibia: Anura: Ranidae), Stanley E. Trauth, Malcolm L, Mccallum
Journal of the Arkansas Academy of Science
Much attention has been focused on limb malformations in anurans following the startling discovery of major limb deformities in Northern Leopard Frogs (Rana pipiens) in Minnesota in 1995. The numerous causes for these malformations can be attributed to a number of natural phenomena, or they can be considered as being manmade. In the present study, we report on a previously undescribed type of limb abnormality in a single individual of the Southern Leopard Frog (Lithobates sphenocephalus) from Arkansas. Histological examination of left tibiofibula revealed a complete disruption of the normal diaphyseal bone structure in this adult …
Notes On The Natural History Of Selected Invertebrates From Arkansas, 2019, Matthew B. Connior, Renn Tumlison, Henry Robison
Notes On The Natural History Of Selected Invertebrates From Arkansas, 2019, Matthew B. Connior, Renn Tumlison, Henry Robison
Journal of the Arkansas Academy of Science
The invertebrate fauna are a large component of ecosystem. Yet, invertebrate biologists are few and scattered in Arkansas; thus, the invertebrate fauna of much of the state is poorly known. Herein we document new records of distribution and provide notes on the natural history of selected invertebrates from Arkansas. Of note, we provide records on planarians, crayfish, centipedes, and spiders.
Haemogregarina Sp. (Apicomplexa: Eucoccidiorida: Adeleorina) From Eastern Spiny Softshell, Apalone Spinifera Spinifera (Testudines: Trionychidae), From Arkansas, Chris T. Mcallister, Henry W. Robison
Haemogregarina Sp. (Apicomplexa: Eucoccidiorida: Adeleorina) From Eastern Spiny Softshell, Apalone Spinifera Spinifera (Testudines: Trionychidae), From Arkansas, Chris T. Mcallister, Henry W. Robison
Journal of the Arkansas Academy of Science
No abstract provided.
More Host Records For Acanthocephalan Parasites From Arkansas Fishes (Aphredoderidae, Catostomidae, Centrarchidae, Cyprinidae, Esocidae, Percidae), Chris T. Mcallister, Henry W. Robison
More Host Records For Acanthocephalan Parasites From Arkansas Fishes (Aphredoderidae, Catostomidae, Centrarchidae, Cyprinidae, Esocidae, Percidae), Chris T. Mcallister, Henry W. Robison
Journal of the Arkansas Academy of Science
No abstract provided.
Dumortier’S Liverwort, Dumortiera Hirsuta (Sw.) Nees (Hepaticophyta: Marchantiales: Dumortieraceae) In Arkansas, Chris T. Mcallister, Henry W. Robison, Paul G. Davison
Dumortier’S Liverwort, Dumortiera Hirsuta (Sw.) Nees (Hepaticophyta: Marchantiales: Dumortieraceae) In Arkansas, Chris T. Mcallister, Henry W. Robison, Paul G. Davison
Journal of the Arkansas Academy of Science
No abstract provided.
Keynote Address And Meeting Program, Academy Editors
Keynote Address And Meeting Program, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.