Corrigendum to "An equivalence of categories for graded modules over monomial algebras and path algebras of quivers" [J. Algebra, 353(1) (2012) 249-260]

Our published paper contains an incorrect statement of a result due to Artin and Zhang. This corrigendum gives the correct statement of their result and includes a new result that allows us to use their result to prove our main theorem. Thus the main theorem of our published paper is correct as stated but its proof must be modified

Thinking Outside of the Cereal Box: Breeding Underutilized (Pseudo)Cereals for Improved Human Nutrition.

Cereal grains have historically played a critical role in sustaining the caloric needs of the human population. The major cereal crops, wheat, rice, and maize, are widely cultivated and have been subjected to biofortification to enhance the vitamin and mineral nutrient content of grains. In contrast, grains of several other cereals as well as non-grass pseudocereals are naturally rich in micronutrients, but have yet to be explored for broad-scale cultivation and consumption. This mini review focuses on the micronutrient and phytochemical profiles of a few emerging (pseudo)cereals and examines the current constraints of their integration into the global food system. Prospects of leveraging whole genome sequence information and modern breeding technologies to promote the breeding and accessibility of these crops are also discussed

Using Regression Mixture Analysis in Educational Research

Conventional regression analysis is typically used in educational research. Usually such an analysis implicitly assumes that a common set of regression parameter estimates captures the population characteristics represented in the sample. In some situations, however, this implicit assumption may not be realistic, and the sample may contain several subpopulations such as high math achievers and low math achievers. In these cases, conventional regression models may provide biased estimates since the parameter estimates are constrained to be the same across subpopulations. This paper advocates the applications of regression mixture models, also known as latent class regression analysis, in educational research. Regression mixture analysis is more flexible than conventional regression analysis in that latent classes in the data can be identified and regression parameter estimates can vary within each latent class. An illustration of regression mixture analysis is provided based on a dataset of authentic data. The strengths and limitations of the regression mixture models are discussed in the context of educational research. Accessed 40,971 times on https://pareonline.net from November 28, 2006 to December 31, 2019. For downloads from January 1, 2020 forward, please click on the PlumX Metrics link to the right

Hydrocarbon and CO\u3csub\u3e2\u3c/sub\u3e Emissions from Oil and Gas Production Well Pad Soils Comparative to Background Soil Emissions in Eastern Utah

Emissions of methane, non-methane hydrocarbons (NMHC), and carbon dioxide (CO2) at 27 natural gas well pads, 11 non-well locations in oil and gas fields, and 7 hydrocarbon-bearing outcrops in eastern Utah between 2013 and 2016 were measured using a dynamic flux chamber (DFC) in effort to answer the following questions: What effect does the development of oil and gas have on the observed air quality (increased ozone, CO2, volatile organic compounds (VOCs), and/or methane emissions) in northeastern Utah? What percentage of these gases is due to natural background emissions, and what percentage is due to oil and gas development in the region? Methane emissions were the focus of this study, but emissions of other compounds were also measured to better understand the sources and characteristics of emissions. Background methane fluxes were all (mg) meter (m)-2 hour (h)-1. Methane emissions from well pad soils were commonly higher closer to the wellhead, though exceptions existed. Methane fluxes from well pad soils ranged from -5.6 to 70,000 mg m-2h-1. Based on analysis of NMHC emissions data, emissions from 68% of the sampled well pad soils were due to leaks of raw natural gas, whereas the remaining emissions were likely from a combination of raw gas leaks, liquid hydrocarbon spills, and/or methanogenic processes. CO2 emissions were higher than methane emissions 92% of the time at well sites, possibly due to CO2 in natural gas, and/or CO2 emitted from bacterial decomposition of soil organic matter and/or fossil hydrocarbons. Total combustible soil gas concentrations were measured at 21 wells. In summer 2015, soil properties were also analyzed to better understand well leakage. Wells categorized as shut-in had the highest average methane fluxes. Measured methane soil emissions were scaled-up for the entire Uinta Basin to estimate the overall emission from well pad soils, and to compare soil emissions with other natural gas-related sources. Producing and shut-in gas wells were estimated to emit 16.1 ± 4.3 and 8.6 ± 3.2 (90% confidence interval) t y-1 (tonne/year) of methane in the Uinta Basin, respectively, which i

Examining the Impact of Pay-for-Time and Pay-for-Performance Compensation on Measures of Productivity

Problem: Previous research on pay-for-performance (PFP) and pay-for-time (PFT) employee compensation has determined employees are more productive under PFP compensation schedules; however, research concerning employee preference and off-task behavior between PFP and PFT schedules have yielded inconclusive results. Procedure: Participants engaged in a check-processing task, which consisted of entering sample checks containing a value between $1 and$999. The check-processing task remained the same throughout all pre-experimental and experimental conditions. The check background was white during baseline, but alternated between four colors during subsequent phases. Each background color was associated with a monetary schedule: orange (EXT), green (FT 15 s), blue (FR 1), and yellow (FR 5). The pre-experiment consisted of two phases: baseline and a Stability Phase. During baseline, participants received zero monetary compensation. During the Stability Phase, the four monetary schedules were alternated and participants were paid according to the monetary scheduled they were working under. The pre-experiment was used to determine the stability criteria implemented in the actual experiment. The experiment consisted of three phases: baseline, Phase 1, and Phase 2. Baseline and Phase 1 remained the same as during the pre-experiment, but with the inclusion of the stability criteria. Phase 2 lasted 16 min and used the same four monetary schedules; however, all checks began with a white-colored background. Phase 2 introduced the observing response as a measure of reinforcement value. To engage in the observing response, participants pressed the spacebar on the keyboard, which changed the check’s background color from “white” to the color associated with the current schedule for 1 s. Findings: Results showed that the majority of the nine experimental participants produced higher rates of check processing under PFP conditions. Similarly, results from Phase 1 demonstrated that all participants spent more time on-task under PFP conditions; however, Phase 2 results indicated that the majority (67%) of participants that engaged in off-task behavior were off-task the most under PFP conditions. Sixty-seven percent of the participants that engaged in the observing response observed the most under the denser PFP schedule (i.e., FR 1), although observing tended to be variable both within and across participants. The study concluded with an overview of the results and a discussion on potential limitations and areas of future PFP/PFT research

Lueders Water System Improvements Jones County, Texas

The City of Lueders, TX is proposing to make improvements to its water system in Jones County, TX. The project includes construction of an approximately 900 m long waterline south of town running from Cox Street to CR207/204. The pipeline bores under the Clear Fork of the Brazos River 450 m upstream from the Lake Penick dam. Jacob & Martin, LTD, which is designing the pipeline route, contracted with AR Consultants, Inc. to conduct a pedestrian survey of the route. The purpose of this investigation was to determine if significant cultural resources were present in the proposed project area. Site 41JS136 (formerly 41JS75), is a surficial scatter of prehistoric artifacts eroding out of the terrace overlooking the Clear Fork and site 41JS135 is the remains of a historic lake and associated features. Neither site is receiving a formal recommendation for NRHP or SAL. No evidence of the prehistoric site was found in the proposed route, and one of the levees for the historic lake will be avoided by directionally drilling under it. The portion of the route through 41JS136 (formerly 41JS75) is considered ineligible. No other cultural resources were identified during the survey of the remainder of pipeline route. Based on the results of the survey, AR Consultants, Inc. concludes that further cultural resource investigations for this project area are unwarranted, and requests that the THC concur with this recommendation. No artifacts were collected during the survey, and all paperwork will be curated with the Center for Archaeological Studies at Texas State University. However, if buried cultural materials are discovered during construction or the route changes, the Archeology Division of the THC and the Fort Worth District of the USACE should be notified

Effects of bonding pressure and lamina thickness on mechanical properties of CLT composed of southern yellow pine

This study produced cross-laminated timber panels at a range of four lamina thickness (5/8, 1, 1 1/8, and 1 1/4 inch) and three bonding pressures (50, 125, 200 psi), producing a total of 12 panels for mechanical testing. The goal of this study is to observe how the thickness and pressure trends affect the mechanical properties of CLT. Tests include flatwise bending, flatwise shear, internal-bond, and delamination. Results showed that bending MOE decreases as the panel thickness increases while bonding pressure had no significance. Bending MOR was less significant for the thickness and more significant for pressure compared to the MOE. Shear tests showed strong inverse relationship between MOR and thickness while increasing pressure strongly increased MOR. Internal-bond testing showed no clear relationship between thickness or pressure. Delamination decreased as a result of higher pressures while thickness had no significant affect

Champions Drive Outfall Harris County, Texas

Harris County is planning the Champions Drive Outfall project in the north central part of the county. The proposed outfall will replace existing outfalls in the south bank of Cypress Creek in a piece of land previously developed for the road between the creek and where the pavement ends at the northern terminus of Champions Drive. This area is approximately 100 meters long by 20 meters wide and consists of 0.48 acres. Halff Associates, Inc., which is handling the project’s environmental permitting, and contracted with AR Consultants, Inc. to conduct survey of the project area. AR Consultants, Inc. recommended survey of the outfall area because of the prehistoric potential and numerous sites recorded in the immediate area along Cypress Creek. AR Consultants, Inc. recommended the excavation of a backhoe trench near the creek banks as well as a few shovel tests. Survey was conducted on December 11 and 12, 2017. Four shovel tests and two backhoe trenches were excavated. The purpose of this investigation was to determine if significant cultural resources were present in the proposed project area. No prehistoric cultural resources were identified in or below the surface in the survey area. Materials dating to the mid-20th century were found in the trenches, but this was all out of context construction fill likely from the late 1970s when the existing outfalls and road base was developed. Based on the results of the survey, ARC concludes that further cultural resource investigations for this project are unwarranted, and requests that the THC concur with this recommendation. However, if intact buried cultural materials are discovered during construction, the Archeology Division of the THC should be notified

Compressive Point Cloud Super Resolution

Automatic target recognition (ATR) is the ability for a computer to discriminate between different objects in a scene. ATR is often performed on point cloud data from a sensor known as a Ladar. Increasing the resolution of this point cloud in order to get a more clear view of the object in a scene would be of significant interest in an ATR application. A technique to increase the resolution of a scene is known as super resolution. This technique requires many low resolution images that can be combined together. In recent years, however, it has become possible to perform super resolution on a single image. This thesis sought to apply Gabor Wavelets and Compressive Sensing to single image super resolution of digital images of natural scenes. The technique applied to images was then extended to allow the super resolution of a point cloud