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Journal Of The Arkansas Academy Of Science - Volume 61 2007, Academy Editors
Journal Of The Arkansas Academy Of Science - Volume 61 2007, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Comparison Of Aquatic-Insect Habitat And Diversity Above And Below Road Crossings In Low-Order Streams, J. Wesley Neal, Nathan J. Harris, Sathyanand Kumaran, David A. Behler, Thomas J. Lang, Paul R. Port, Marcella Melandri, Benjamin G. Batten
Comparison Of Aquatic-Insect Habitat And Diversity Above And Below Road Crossings In Low-Order Streams, J. Wesley Neal, Nathan J. Harris, Sathyanand Kumaran, David A. Behler, Thomas J. Lang, Paul R. Port, Marcella Melandri, Benjamin G. Batten
Journal of the Arkansas Academy of Science
The effects of road crossings on fish communities have been extensively studied; yet little attention has been given to macroinvertebrate communities. This study evaluated physical stream characteristics, water quality, and aquatic-insect richness from above and below road crossings of low-order streams in the Ouachita National Forest in Arkansas. Fifteen road crossings were sampled during October and November 2005. Erosion was significantly higher below road crossings than above. Sites downstream of road crossings had significantly lower pH and significantly higher turbidity than sites upstream of road crossings. Despite differences in water quality and habitat, there was no apparent difference in aquatic-insect …
Quantifying Soil Chemical Properties Using Near Infrared Reflectance Spectroscopy, Robert L. Ficklin, Shane M. Foley, Robert E. Kissell Jr.
Quantifying Soil Chemical Properties Using Near Infrared Reflectance Spectroscopy, Robert L. Ficklin, Shane M. Foley, Robert E. Kissell Jr.
Journal of the Arkansas Academy of Science
Methodologies for determining soil chemical properties have evolved dramatically during the past century. Early geochemical analyses were conducted exclusively through the use of wet chemistry techniques that were relatively reliable but painstaking and subject to errors at various stages of analysis. Near infrared reflectance spectroscopy (NIRS) has emerged as a new approach for rapidly analyzing a variety of materials including soils. In this study soil samples were taken from eight study areas across the Ozark Highlands of Arkansas, and NIRS calibration models were developed to determine the accuracy of using NIRS to analyze soils compared with standard soil chemical analysis …
Assessing The Spatial Accuracy Of Applanix DssTm Model-301 Sensor Stereo Imagery Using A Survey Gps Ground Control Network, Robert C. Weih Jr., David W. Rowton
Assessing The Spatial Accuracy Of Applanix DssTm Model-301 Sensor Stereo Imagery Using A Survey Gps Ground Control Network, Robert C. Weih Jr., David W. Rowton
Journal of the Arkansas Academy of Science
During the past decade, Geographic Information Systems (GISs) have become widely used in many disciplines and that has created demands for accurate high-resolution digital data, especially digital imagery. Photogrammetry has emerged as one of the most important disciplines employed in the collection of spatially related information for use in GIS databases, especially for terrestrial landscapes. This study assessed the horizontal and vertical accuracy of the Applanix Digital Sensor System (DSS"") 301 orthophotographs. The study area was located on the University of Arkansas at Monticello campus and included 950 acres. To assess the spatial accuracy of the DSS, 56 Ground Control …
Concert Recording 2007-03-27, Lawrence Odom, University Of Arkansas, Fayetteville. Chamber Orchestra
Concert Recording 2007-03-27, Lawrence Odom, University Of Arkansas, Fayetteville. Chamber Orchestra
Concert Recordings & Programs
No program or contents listing available
A Computational Model For Analysis Of Uncoupled No Synthase On Nitric Oxide And Superoxide Interaction In Microcirculation, William Richardson, Mahendra Kavdia
A Computational Model For Analysis Of Uncoupled No Synthase On Nitric Oxide And Superoxide Interaction In Microcirculation, William Richardson, Mahendra Kavdia
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Nitric oxide (NO) produced by endothelial cells is a key component for blood-vessel dilation. Dilation is achieved through smooth muscle relaxation as a response to NO transport. Inhibition of this process occurs through the inactivation of NO by reactive oxygen species, especially superoxide (O2 -). NO and superoxide react quickly, forming peroxynitrite (ONOO-). Both superoxide and peroxynitrite apply oxidative stress on vascular tissue. Experimental studies investigating NO interactions are difficult since these reactions occur rapidly and over small distances. This study presents a computational model to describe the interactions of NO, superoxide, and peroxynitrite across an arteriole/venule pair. Based on …
91st Annual Meeting, 2007. Secretary's Report And Financial Statement, Academy Editors
91st Annual Meeting, 2007. Secretary's Report And Financial Statement, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
91st Annual Meeting, 2007. Program, Academy Editors
91st Annual Meeting, 2007. Program, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Measurement And Modeling Of Light Transmission Through Turbid Media, Alois (Al) J. Adams, Michael Fahrenwald, Long Do
Measurement And Modeling Of Light Transmission Through Turbid Media, Alois (Al) J. Adams, Michael Fahrenwald, Long Do
Journal of the Arkansas Academy of Science
No abstract provided.
Electron Shock Waves: Ionization Rate And Solutions To The Efd Equations, Mostafa Hemmati, Steven Summers, Michael Weller
Electron Shock Waves: Ionization Rate And Solutions To The Efd Equations, Mostafa Hemmati, Steven Summers, Michael Weller
Journal of the Arkansas Academy of Science
This paper describes our numerical investigation into ionizing breakdown waves, primarily antiforce waves. Antiforce waves are waves for which the electric field force on the electronsisin the opposite direction of the wave's propagation. This investigation required us to utilize one-dimensional electron fluid-dynamical equations, which were applied to a pulse wave that transmits into a region of neutral gas and is under the influence of an applied electric field. Two important assumptions were made in applying these equations: electrons were considered to be the main component in the propagation of the pulse wave, and the partial pressure of the electron gas …
Electrostatic Charge Polarity Effect On Respiratory Deposition In The Glass Bead Tracheobronchial Airways Model, Mohammed Ali, Malay K. Mazumder, Rama N. Reddy, Mariofanna Milanova, Jing Zhang, Alexandru S. Biris
Electrostatic Charge Polarity Effect On Respiratory Deposition In The Glass Bead Tracheobronchial Airways Model, Mohammed Ali, Malay K. Mazumder, Rama N. Reddy, Mariofanna Milanova, Jing Zhang, Alexandru S. Biris
Journal of the Arkansas Academy of Science
The effects of unipolar and bipolar electrostatic charges on the deposition efficiency of therapeutic aerosols in the physical model of human tracheobronchial (TB) airways have been investigated. Respirable size aerosol particles were generated by a commonly prescribed and commercially available nebulizer and charged by a corona charger and then their size and charge distributions were characterized by an Electronic Single Particle Aerodynamic Relaxation Time analyzer to study the drug aerosol particles' deposition pattern. The experiments were performed with a glass bead tracheobronchial model (GBTBM) (physical model) which was designed and developed based upon widely used and adopted dichotomous lung morphometric …
Pto Performance And Nox Emissions With D2, B20, And B100 Fuels In A John Deere 3203 Compact Tractor, Matthew Hardin, Tonya Brown, Melanie Roller, Donald Johnson, George Wardlow
Pto Performance And Nox Emissions With D2, B20, And B100 Fuels In A John Deere 3203 Compact Tractor, Matthew Hardin, Tonya Brown, Melanie Roller, Donald Johnson, George Wardlow
Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences
Tests were conducted in fall 2006 on a John Deere 3203 diesel tractor to determine differences in specific fuel consumption, power take-off (PTO) torque, PTO power, thermal efficiency, and oxides of nitrogen (NOx) emissions between No. 2 diesel (D2), 20% biodiesel (B20), and 100% biodiesel (B100). Four 1-hour tests were conducted on each fuel. The results indicated no statistically significant differences (p≤.05) between D2 or B20 on any variable of interest. However, B100 resulted in significantly (p≤.05) increased, specific fuel consumption and thermal efficiency and decreased PTO torque and PTO power over both D2 and B20. These data suggest that …
A Comparative Study Of Hybrid And Internet-Based Educational Technology Course Modules, Nilly Adnan Al-Banna
A Comparative Study Of Hybrid And Internet-Based Educational Technology Course Modules, Nilly Adnan Al-Banna
Graduate Theses and Dissertations
The purpose of this study was to examine students’ attitudes and performance toward the teaching methods in an educational technology course. Undergraduate students enrolled in the Educational Technology course ETEC 2002L at the University of Arkansas had been exposed to both on-line modules and in-class instruction. The sample size for this study was 155. The results included 110 valid surveys completed by the students on paper. The data collected from the survey were analyzed using percentages, means, and t test of paired samples to find if there was a significant difference in students’ attitudes toward on-line versus hybrid instruction. Four …
Arkansas Physics Times, October 3, 2006, Society Of Physics Students (American Institute Of Physics)
Arkansas Physics Times, October 3, 2006, Society Of Physics Students (American Institute Of Physics)
Arkansas Physics Times
No abstract provided.
Jeanne Clery Disclosure Of Campus Security Policy And Campus Crime Statistics Report, 2005, University Of Arkansas, Fayetteville. Police Department
Jeanne Clery Disclosure Of Campus Security Policy And Campus Crime Statistics Report, 2005, University Of Arkansas, Fayetteville. Police Department
Jeanne Clery Disclosure of Campus Security Policy
No abstract provided.
Re:View, 2006, University Of Arkansas, Fayetteville. School Of Architecture
Re:View, 2006, University Of Arkansas, Fayetteville. School Of Architecture
Re:View
No abstract provided.
Education Policy News, Fall 2006, University Of Arkansas, Fayetteville. Dept. Of Education Reform. Office For Education Policy
Education Policy News, Fall 2006, University Of Arkansas, Fayetteville. Dept. Of Education Reform. Office For Education Policy
Education Policy News
No abstract provided.
Who Chooses, Who Uses? Initial Evidence From The D.C. Opportunity Scholarship Program, Patrick J. Wolf, Nada Eissa, Babette Gutmann
Who Chooses, Who Uses? Initial Evidence From The D.C. Opportunity Scholarship Program, Patrick J. Wolf, Nada Eissa, Babette Gutmann
School Choice Demonstration Project
The federal government recently enacted its first school voucher program as a pilot project in the District of Columbia. To be eligible, students need to be entering grades K-12 and have a family income at or below 185 percent of the poverty level. Although a rigorous analysis of the Opportunity Scholarship Program’s impact on student achievement and other outcomes remains a prospect for the future, at this early point initial data exists regarding the families that are applying for the program and the students that are using and not using the voucher when offered. Here we present a preliminary analysis …
Annual Report, 2005-2006, University Of Arkansas, Fayetteville. Office Of The Vice Provost For Research, University Of Arkansas, Fayetteville. Graduate School And International Education
Annual Report, 2005-2006, University Of Arkansas, Fayetteville. Office Of The Vice Provost For Research, University Of Arkansas, Fayetteville. Graduate School And International Education
Graduate School and International Education Annual Report
No abstract provided.
2005 Nutrient And Sediment Monitoring Report Kings River Near Berryville, Arkansas, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis
2005 Nutrient And Sediment Monitoring Report Kings River Near Berryville, Arkansas, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis
Arkansas Water Resources Center Technical Reports
An automatic sampler and a USGS gauging station were established in 1998 and water quality sampling was begun in 1999 on the Kings River near Berryville, Arkansas. Continuous stage and discharge measurements and frequent water quality sampling have been used to determine pollutant concentrations and loads in the river. This report presents the results from the sampling and analysis for January 1, 2005 to December 31, 2005.
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The Washington County Road 195 Bridge On The West Fork Of The White River, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The Washington County Road 195 Bridge On The West Fork Of The White River, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis
Arkansas Water Resources Center Technical Reports
A water quality sampling station was installed at the Washington County road 195 bridge on the West Fork of the White River just above the confluence of the three main forks of the Upper White River in December 2001. The Quality Assurance Project Plan (QAPP) was approved by EPA Region six on March 2002 and sampling was begun at that time. This station is coordinated with a USGS gauging station at the same location. This station was instrumented to collect samples at sufficient intervals across the hydrograph to accurately estimate the flux of total suspended solids, nitrogen and phosphorus into …
2005 Nutrient And Sediment Monitoring Report Ballard Creek Near Arkansas/Oklahoma Line, Marc Nelson, L. Wade Cash, Keith Trost, Jennifer Purtle, Marty Matlock
2005 Nutrient And Sediment Monitoring Report Ballard Creek Near Arkansas/Oklahoma Line, Marc Nelson, L. Wade Cash, Keith Trost, Jennifer Purtle, Marty Matlock
Arkansas Water Resources Center Technical Reports
The Illinois River Basin has experienced water quality impairment from non-point source pollution for many years. This fact was well documented in the State of Arkansas' Water Quality Assessment report, the Soil Conservation Service River Basin Study, and several University of Arkansas studies. Thirty-seven sub-watersheds have been identified by the SCS in the Arkansas portion of the Illinois River basin. In the Arkansas portion of the Basin, the Illinois River, Evansville Creek, Baron Fork, Cincinnati Creek, Muddy Fork, Moores Creek, Clear Creek, Osage Creek and Flint Creek were all classified as not supporting their designated use as primary contact recreation …
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The L'Anguille River Near Palestine 2005 Annual Report, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, J.V. Brahana, R. Davis, K. Steele
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus At The L'Anguille River Near Palestine 2005 Annual Report, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, J.V. Brahana, R. Davis, K. Steele
Arkansas Water Resources Center Technical Reports
A water quality sampling station was installed at the L’Anguille River near Palestine in 2003. This station is coordinated with a USGS gauging station at the same location. This station is instrumented to collect samples at sufficient intervals across the hydrograph to accurately estimate the flux of total suspended solids, nitrogen and phosphorus in the River. The L’Anguille River was listed on Arkansas' 1998 (listed in later reports?) 303d list as impaired from sediment (turbidity). The L’Anguille River was the second stream to have total maximum daily loads (TMDL) determined in Arkansas. Accurate determination of stream nutrients and sediment is …
Water Quality Sampling, Analysis And Annual Load Determinations For Nutrients And Sediment At The Arkansas Highway 45 Bridge On The White River Just Above Beaver Lake, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, J.V. Brahana
Water Quality Sampling, Analysis And Annual Load Determinations For Nutrients And Sediment At The Arkansas Highway 45 Bridge On The White River Just Above Beaver Lake, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, J.V. Brahana
Arkansas Water Resources Center Technical Reports
Automatic water sampler and a U. S. Geological Survey gauging station were established in 1995 on the main stem of the Illinois River at the Arkansas Highway 59 Bridge. Since that time, continuous stage and discharge measurements and water quality sampling have been used to determine pollutant concentrations and loads in the Arkansas portion of the Illinois River. This report represents the results from the measurement and sampling by the Arkansas Water Resources Center -Water Quality Lab for January 1, 2005 to December 31, 2005.
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus In The Bayou Bartholomew At Garrett Bridge, Arkansas And Near Portland, Arkansas, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis, K. Steele
Water Quality Sampling, Analysis And Annual Load Determinations For Tss, Nitrogen And Phosphorus In The Bayou Bartholomew At Garrett Bridge, Arkansas And Near Portland, Arkansas, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle, Ralph Davis, K. Steele
Arkansas Water Resources Center Technical Reports
Water quality sampling stations were installed at the Bayou Bartholomew at Garrett Bridge, AR and near Portland, AR. These stations are coordinated with USGS gauging stations at the same locations. These stations are instrumented to collect samples at sufficient intervals across the hydrograph to accurately estimate the flux of total suspended solids, nitrogen and phosphorus in the River. Bayou Bartholomew watershed is about 437,000 hectares and is located in the south east corner of the state. The land use in the watershed is mostly in forest and cropland agriculture with some urban area. High turbidity levels and excessive silt loads …
Illinois River 2005 Pollutant Loads At Arkansas Highway 59 Bridge, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle
Illinois River 2005 Pollutant Loads At Arkansas Highway 59 Bridge, Marc Nelson, Wade Cash, Keith Trost, Jennifer Purtle
Arkansas Water Resources Center Technical Reports
Automatic water sampler and a U. S. Geological Survey gauging station were established in 1995 on the main stem of the Illinois River at the Arkansas Highway 59 Bridge. Since that time, continuous stage and discharge measurements and water quality sampling have been used to determine pollutant concentrations and loads in the Arkansas portion of the Illinois River. This report represents the results from the measurement and sampling by the Arkansas Water Resources Center -Water Quality Lab for January 1, 2005 to December 31, 2005.
Projecting The Economic Impact Of The Fayetteville Shale Play For 2005-2008, Jeffery T. Collins, Katherine A. Deck
Projecting The Economic Impact Of The Fayetteville Shale Play For 2005-2008, Jeffery T. Collins, Katherine A. Deck
Publications and Presentations
This study projects the general economic impact from exploration and development activities related to the Fayetteville Shale. The Fayetteville Shale is an unconventional gas reservoir located on the Arkansas side of the Arkoma Basin, ranging in thickness from 50 to 325 feet and ranging in depth from 1,500 to 6,500 feet. The Fayetteville Shale is aerially extensive and may be present across numerous counties in central and eastern Arkansas, including the counties of Cleburne, Conway, Faulkner, Independence, Johnson, St. Francis, Prairie, Van Buren, White, and Woodruff.
Supplemental Education Services In Arkansas, Sarah C. Mckenzie, Gary W. Ritter
Supplemental Education Services In Arkansas, Sarah C. Mckenzie, Gary W. Ritter
Policy Briefs
The federal No Child Left Behind (NCLB) Act of 2001 gives eligible students who attend Title I schools not making adequate yearly progress (AYP) for at least three consecutive years the right to receive free supplemental education services, such as after-school tutoring. Under NCLB, states must provide a list of approved supplemental services providers to districts, who then, theoretically, provide the list to parents of eligible students prior to the start of the school year, so that they can choose the best provider for their children (U. S. Department of Education, 2005).
Examining The Relationship Between Student Support Services And Student Outcomes At A Four-Year Institution, Angela Williams
Examining The Relationship Between Student Support Services And Student Outcomes At A Four-Year Institution, Angela Williams
Graduate Theses and Dissertations
This study identified and examined the service variable combination(s) provided by Student Support Services (SSS) TRIO program that had a statistically significant relationship with program participants’ academic performance and retention. SSS is a federally funded program designed to increase the retention and graduation rates of undergraduate first-generation, low-income, disabled college students. While SSS has played a significant role in the retention of disadvantaged students, scarce empirical research exist which examine the combination of SSS services that affect students’ academic performance and retention. Considering SSS programs will probably not experience large increases in federal support in the future and given the …
Comprehensive School Reform: A Proven School Improvement Method For Troubled Schools, Sarah C. Mckenzie, Gary W. Ritter
Comprehensive School Reform: A Proven School Improvement Method For Troubled Schools, Sarah C. Mckenzie, Gary W. Ritter
Policy Briefs
As legislators in Arkansas begin to consider options for spending both Title I and categorical funds and as school leaders in Arkansas look for proven options that will increase student performance, especially for low performing schools that serve low income students, comprehensive school reform (CSR) is one researchsupported option to consider.