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Articles 1411 - 1440 of 8048
Full-Text Articles in Entire DC Network
The ‘Pumpgate’ Incident: Stigma Against Lactating Mothers In The U.S. Workplace, Mary Bresnahan, Jie Zhuang, Jennifer Anderson, Yi Zhu, Joshua Nelson, Xiaodi Yan
The ‘Pumpgate’ Incident: Stigma Against Lactating Mothers In The U.S. Workplace, Mary Bresnahan, Jie Zhuang, Jennifer Anderson, Yi Zhu, Joshua Nelson, Xiaodi Yan
Communication Studies Publications
Studies conclude that breastfeeding for six months is associated with better lifelong health for mother and child. Mothers in the U.S. returning to work after maternity leave report difficulty with the need to take frequent breaks to pump breastmilk so many stop breastfeeding. Factors discouraging pumping breastmilk in the workplace motivated a content analysis of public comments posted in response to a legal deposition that occurred in January of 2011 in which an attorney who was a new mother was challenged about taking a break to pump breastmilk. A total of 899 public comments posted on Yahoo in 2015-2016 in …
The Collegian: February 15, 2017, The Collegian Staff
The Collegian: February 15, 2017, The Collegian Staff
The Collegian, 2016-2017
Volume 132
Issue 16
The Collegian: February 08, 2017, The Collegian Staff
The Collegian: February 08, 2017, The Collegian Staff
The Collegian, 2016-2017
Volume 132
Issue 16
The Collegian: February 01, 2017, The Collegian Staff
The Collegian: February 01, 2017, The Collegian Staff
The Collegian, 2016-2017
Volume 132
Issue 15
Metaphors That Communicate Weight-Based Stigma In Political News: A Case Study Of New Jersey Governor Chris Christie, J. Anderson, Y. Zhu, J. Zhuang, J.C. Nelson, M.J. Bresnahan, X. Yan
Metaphors That Communicate Weight-Based Stigma In Political News: A Case Study Of New Jersey Governor Chris Christie, J. Anderson, Y. Zhu, J. Zhuang, J.C. Nelson, M.J. Bresnahan, X. Yan
Communication Studies Publications
News media use metaphors to describe politics (Landau & Keefer, 2014) and obesity (Barry,Brescoll, Brownell, & Schlesinger, 2009). Weight-based stigma is prevalent in U.S. news media (Heuer,McClure, & Puhl, 2011). Media coverage of politicians’ body size may contain metaphors that stigmatizeweight. Metaphors reflect and shape how people think about important issues like politics or obesity(Landau, Sullivan, & Greenberg, 2009; Landau, Meier, & Keefer, 2010; Landau & Keefer, 2014).
Objective – This study uses stigma communication theory (Smith, 2007) to examine stigmatizing metaphors used in media coverage of a United States politician, and candidate for the 2016 Republican presidential nomination, New …
Environmental Mental Models Of College Students, Melissa R. Wuellner, Leslie Vincent, Brandi Felts
Environmental Mental Models Of College Students, Melissa R. Wuellner, Leslie Vincent, Brandi Felts
Natural Resource Management Faculty Publications
Primary and secondary students in the United States are provided environmental education in their curricula due in part to national legislation, but higher education, for many U.S. citizens, is the last opportunity to educate young adults about the environment and humans’ role in it in a formalized setting. Pre-college education and other life experiences or ways of learning can shape a student’s mental model of the environment. While some previous research has focused on understanding environmental mental models of primary and secondary students, only one study to date has evaluated models of college students. Further, no study has evaluated potential …
The Collegian: January 25, 2017, The Collegian Staff
The Collegian: January 25, 2017, The Collegian Staff
The Collegian, 2016-2017
Volume 132
Issue 14
The Collegian: January 11, 2017, The Collegian Staff
The Collegian: January 11, 2017, The Collegian Staff
The Collegian, 2016-2017
Volume 132
Issue 13
Jackrabbit Dairy & Food Review, Vikram V. Mistry
Jackrabbit Dairy & Food Review, Vikram V. Mistry
The Jackrabbit Dairy & Food Review
No abstract provided.
Southeast South Dakota Experiment Farm Annual Progress Report: 2017, Southeast South Dakota Research Farm
Southeast South Dakota Experiment Farm Annual Progress Report: 2017, Southeast South Dakota Research Farm
Agricultural Experiment Station and Research Farm Annual Reports
This is an annual report of the research program at the Southeast South Dakota Research Farm in cooperation with South Dakota Agricultural Experiment Station, SDSU Plant Science, and SDSU Animal Science and has special significance for those engaged in agriculture and the agriculturally related businesses in the ten county area of Southeast South Dakota. The results shown are not necessarily complete or conclusive. Interpretations given are tentative because additional data resulting from continuation of these experiments may result in conclusions different from those based on any one year.
Improving Survey Methodology To Monitor Rare Grassland Birds In South Dakota, Kassondra Hendricks
Improving Survey Methodology To Monitor Rare Grassland Birds In South Dakota, Kassondra Hendricks
Electronic Theses and Dissertations
Breeding Bird Survey (BBS) data for grassland bird species has shown the most rapid population decline of any other bird group. Current roadside survey techniques, however, may fall short of providing accurate numbers of rare grassland bird species such as chestnut-collared longspur (Calcarius ornatus), lark bunting (Calamospiza melanocorys), Sprague’s pipit (Anthus spragueii), and Baird’s sparrow (Ammodramus bairdii). Trends resulting from roadside data for grassland birds are oftentimes determined to be statistically insignificant because many grassland bird species occur on too few routes, occur in low numbers per route, and show high annual fluctuations in number. It is possible roadside surveys …
Identification Of Candidate Cellulose Utilizing Bacteria From The Rumen Of Beef Cattle, Using Bacterial Community Profiling And Metagenomics, Lee Opdahl
Electronic Theses and Dissertations
The ruminal microbiome allows ruminant animals to convert cellulosic biomass into food products. A majority of ruminal microorganisms remain uncharacterized due, in part, to the complexity of ruminal microbial communities. In order to gain further insight, selection-based batch culturing from bovine rumen fluid, in combination with metagenomics, was used to identify and characterize previously uncharacterized rumen bacteria capable of metabolizing cellulose, which was supplemented as a purified substrate. 16S rRNA-based population analysis was used to identify rumen bacteria enriched within 14 days of culturing. As a result of 4 independent experiments, seven different candidate cellulose-utilizing species-level operational taxonomic units (OTUs) …
Human Dimensions Of Habitat Loss In The Plains And Prairie Potholes Ecoregion, Lily A. Sweikert
Human Dimensions Of Habitat Loss In The Plains And Prairie Potholes Ecoregion, Lily A. Sweikert
Electronic Theses and Dissertations
The Plains and Prairie Potholes Ecoregion (PPPE), is located in the north-central contiguous United States and is one of the most imperiled grassland regions in the world. Most of the region is privately owned and used for the production of agricultural commodities. In addition to its direct benefits to humanity, the PPPE provides multiple ecosystem services including, soil and water quality improvements, carbon sequestration, weather amelioration, and wildlife habitat. Recent increases in expansion of row crop agriculture concerns conservation practitioners about the long-term integrity of the PPPE. Conservation practitioners are looking to improve their private landowner conservation initiatives in the …
Evaluation Of The Deadwood Bighorn Sheep Herd Translocation, Ty J. Werdel
Evaluation Of The Deadwood Bighorn Sheep Herd Translocation, Ty J. Werdel
Electronic Theses and Dissertations
From 2015-2017, we evaluated a newly established bighorn sheep (Ovis canadensis) herd in the Deadwood Region of the Black Hills, South Dakota. Our objectives were to 1a) determine annual survival rates, 1b) determine cause-specific mortality, 1c) estimate population size, 2a) assess genetic diversity, 2b) assess disease prevalence, 3) evaluate movement patterns post-release, 4a) evaluate 3rd-order habitat selection, and 4b) estimate herbaceous biomass at foraging sites post-release of translocated bighorn sheep. In February 2015, we captured and translocated 26 bighorn sheep from the Luscar Mine near Hinton, Alberta, Canada to the Deadwood Region of the Black Hills, South Dakota. Overall annual …
Modeling Streamflow And Water Quality Impacts Of Grassland Establishment, Conversion, And Management In Skunk Creek Watershed, Jiyeong Hong
Modeling Streamflow And Water Quality Impacts Of Grassland Establishment, Conversion, And Management In Skunk Creek Watershed, Jiyeong Hong
Electronic Theses and Dissertations
Grassland is a valuable natural resource with many environmental benefits, which include erosion control, wildlife habitat promotion, water quality protection, and flood prevention. Conversion of grassland to cultivated cropland has been linked to environmental quality concerns. The goal of this study was to model the impacts of grassland establishment, depletion, and management on hydrology and water quality in Skunk Creek watershed in eastern South Dakota. The specific objectives are to quantify the impacts of grassland conversion and selected management regimes on streamflow and water quality, and explore the optimum grassland establishment location within a watershed to achieve water quality benefits. …
An Evaluation Of Nitrogen Supplementation And Processed Soy Fractions On The Performance Of Cultured Fishes, Brandon M. White
An Evaluation Of Nitrogen Supplementation And Processed Soy Fractions On The Performance Of Cultured Fishes, Brandon M. White
Electronic Theses and Dissertations
World population growth has resulted in an increased demand for a sustainable food supply. This rapid growth coupled with an increased per capita consumption of seafood, has resulted in many of the world’s marine fisheries being over-exploited in an effort to meet the global demand for seafood. Aquaculture has attempted to fill the supply and demand gap created by the dwindling supply of fish in the world’s oceans. Fishmeal (FM) has traditionally been the primary protein ingredient in aquafeeds fed to farm-raised fish, however its unstable supply and increasing price have driven researchers to identify alternative protein sources. Soybean meal …
A Survey Of Non-Crop Plants As Alternative Hosts To Raspberries For Drosophila Suzukii (Spotted Wing Drosophila), Bennur Agbaba
A Survey Of Non-Crop Plants As Alternative Hosts To Raspberries For Drosophila Suzukii (Spotted Wing Drosophila), Bennur Agbaba
Electronic Theses and Dissertations
The spotted wing fruit fly (SWD), Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), is a pest of small fruit crops. Unlike most other Drosophila species, this insect can oviposit into ripe fruits, rendering them unmarketable. Drosophila suzukii is spreading quickly throughout the continental United States including South Dakota, and causing serious damage to horticultural crops, particularly those within the fruit industry. This study determines the D. suzukii host plant both commercial crops and native plants, and defines non-crop host plants by season in South Dakota. Further, it confirms the occurrence of the fly in southeastern South Dakota and identifies high-risk infestation areas …
Phylogenetic And Associated Phenotypic Analysis Of Salmonella Enterica Serovar Mbandaka, Linto Antony
Phylogenetic And Associated Phenotypic Analysis Of Salmonella Enterica Serovar Mbandaka, Linto Antony
Electronic Theses and Dissertations
Food borne salmonellosis is a global public health concern caused by Salmonella, that causes enteric disease both in humans and animals. Most of the pathogenic Salmonella serovars fall under Salmonella enterica subspecies enterica, a major subspecies group that includes more than 50% of total identified Salmonella serovars. New serovars are identified each year and overall incidence of salmonellosis may mask the outbreak incidences caused by individual serovars. Infrequently reported serovar outbreaks can be a significant threat to public health. Salmonella enterica serovar Mbandaka is one of the infrequently reported causative agents of non-typhoidal salmonellosis in USA. But it …
Threshold Models For Genome-Wide Association Mapping Of Familial Breast Cancer Incidence In Humans, Nasir Elmesmari
Threshold Models For Genome-Wide Association Mapping Of Familial Breast Cancer Incidence In Humans, Nasir Elmesmari
Electronic Theses and Dissertations
Breast cancer is the second most fatal cancer in the world and one of the most highly harmful cancers from which people suffer. Breast cancer studies have been able to uncover some knowledge about genetic susceptibility for familial breast cancer in humans. Hence, determining genetic factors may potentially help track the disease, as well as discover the cancer in early stages, or perhaps before it starts. In addition, this may allow early determination of possible treatment strategies which will make it easier to prevent the disease. In this context, it is important to determine whether the heritability of breast cancer …
Enhancing Cellulase Production Of Aureobasidium Pullulans For Use In Converting Dried Distillers’ Grains With Solubles Into A Higher Protein Feed, Emily L. Baldwin
Enhancing Cellulase Production Of Aureobasidium Pullulans For Use In Converting Dried Distillers’ Grains With Solubles Into A Higher Protein Feed, Emily L. Baldwin
Electronic Theses and Dissertations
Main limitations of dried distillers’ grains with solubles (DDGS) as meal for monogastric animals is the presence of high fiber content, reduced fat content, and poor amino acid balance. This causes a reduced economic value of DDGS for these species due to its low inclusion rates. The goal of this theses was to create new strains of a fungus, Aureobasidium pullulans, with enhanced cellulase production and use it to optimize an enzymatic saccharification, pretreatment, and fungal conversion process to enhance the nutritional value of DDGS. Various combinations of enzymatic saccharification, physical/chemical pretreatments, and mutant strains of fungi were investigated …
Macropinosome Maturation Is A Clathrin Dependent Process In Bone Marrow Macrophages, Susmita Poudel
Macropinosome Maturation Is A Clathrin Dependent Process In Bone Marrow Macrophages, Susmita Poudel
Electronic Theses and Dissertations
Macrophages nonspecifically take up extracellular fluids, solutes and macromolecules by macropinocytosis. Understanding the mechanisms of macropinosome maturation will inform the study of lipid uptake, viral entry, antigen processing and presentation, as well as regulation of cell growth. Colony stimulating factor-1 receptor (CSF-1R) is internalized by small vesicle endocytosis, trafficked to nascent macropinosomes and degraded. These CSF-1R positive macropinosomes mature through a sequence similar to endosomes, progressing from EEA1 and Rab5 to Rab7 positive vesicles before fusing with lysosomes. Here we report the assembly of clathrin on internalized macropinosomes shown both by live-cell microscopy of cells expressing clathrin light chain-yellow fluorescent …
Measuring Aquatic Organism Responses To Grassland Restoration: Does The Field Of Dreams Really Exist?, David A. Schumann
Measuring Aquatic Organism Responses To Grassland Restoration: Does The Field Of Dreams Really Exist?, David A. Schumann
Electronic Theses and Dissertations
Landscape homogenization and the degradation of riparian areas has greatly impaired stream ecosystems throughout North America. Conservation programs may repair riparian ecosystems to indirectly improve water quality and instream habitat heterogeneity in hopes to elicit biological responses. However, focused manipulations on isolated stream fragments have rarely achieved biological goals. Prairie streams with restored riparian areas were appraised (chemical, physical, and biological variables) to quantify the indirect effects of prevalent grassland conservation practices on aquatic resources. Riparian rehabilitation, via passive methods, promoted bank-stabilizing vegetation along all conservation stream reaches. Riparian vegetation and function quickly recovered from previous agricultural disturbances at conservation …
Intelligent Learning Control System Design Based On Adaptive Dynamic Programming, Naresh Malla
Intelligent Learning Control System Design Based On Adaptive Dynamic Programming, Naresh Malla
Electronic Theses and Dissertations
Adaptive dynamic programming (ADP) controller is a powerful neural network based control technique that has been investigated, designed, and tested in a wide range of applications for solving optimal control problems in complex systems. The performance of ADP controller is usually obtained by long training periods because the data usage efficiency is low as it discards the samples once used. Experience replay is a powerful technique showing potential to accelerate the training process of learning and control. However, its existing design can not be directly used for model-free ADP design, because it focuses on the forward temporal difference (TD) information …
Response Of Dairy Cows To Dietary Starch Concentrations: Performance, Nutrient Digestion, And Gas Emissions, Juan Isidro Sanchez-Duarte
Response Of Dairy Cows To Dietary Starch Concentrations: Performance, Nutrient Digestion, And Gas Emissions, Juan Isidro Sanchez-Duarte
Electronic Theses and Dissertations
Three studies and a meta-analysis were conducted to determine the performance, nutrient digestion, and gas emissions of dairy cows fed diets with different starch concentrations (19 to 27% of DM). Study 1 evaluated the effects of reducing corn grain starch with non-forage fiber sources (NFFS, soybean hulls and beet pulp) in diets of soybean meal (SBM) or canola meal (CM). In study 1, reducing starch from 27 to 20% with soybean hulls and beet pulp had a negative effect on dry matter intake (DMI), milk yield and energy-corrected milk (ECM), regardless of the crude protein (CP) source. Those effects were …
Response Of Soil Properties To 23-25 Years Of Diverse Crop Rotations And Tillage Systems In South Dakota, Usa, Abdullah H. Alhameid
Response Of Soil Properties To 23-25 Years Of Diverse Crop Rotations And Tillage Systems In South Dakota, Usa, Abdullah H. Alhameid
Electronic Theses and Dissertations
Diverse cropping systems and no-till (NT) are beneficial in improving soil organic carbon (SOC) and other soils properties. The present study was conducted to evaluate the interactions and impacts of long-term tillage and diverse crop rotation systems on soil quality indicators that include a range of soil chemical, physical, hydrological, and microbial properties. The study was established in 1991 at Beresford, South Dakota and included three crop rotation systems [2-yr; maize (Zea mays L.)-soybean (Glycine max L.), 3-yr; maize-soybean-oat (Avena sativa L.), and 4-yr; maize-soybean-oat-wheat (Triticum aestivum L.)] managed under two tillage systems (NT and CT; conventional- tillage). Soil sampling …
Examination Of The Potential Of Structure-From-Motion Photogrammetry And Terrestrial Laser Scanning For Rapid Nondestructive Field Measurement Of Grass Biomass, Sam D. Cooper
Electronic Theses and Dissertations
Above ground biomass (AGB) is a parameter commonly used for assessment of grassland systems. While destructive sampling of AGB is highly accurate, it is time consuming and often precludes repeat temporal sampling or sampling in sensitive ecosystems. Consequently, a number of nondestructive techniques that relate grass structural properties to AGB have been developed. This study investigated the application of two recent technologies, Terrestrial Laser Scanning (TLS) and Structurefrom- Motion (SfM), in the development of rapid nondestructive AGB estimation of grassland plots. TLS and SfM volume metrics generated using a rasterized surface differencing method were linearly related to destructively measured total …
Encouraging Organic Agriculture: The Effects Of Conversion Subsidies, Sarah Adams Inkoom
Encouraging Organic Agriculture: The Effects Of Conversion Subsidies, Sarah Adams Inkoom
Electronic Theses and Dissertations
This thesis examines the importance of conversional subsidies in accounting for an increase in organic acreage in the 12 North-Central States in the United States. Monthly time series data that spans from January 2002 to December 2014 was used in the analysis. Empirical evidence suggests that increase in organic acreage is due in part to the availability of conversion subsidies. Without government assistance, most small-scale farmers are not sufficiently motivated to switch to organic production due to the high initial costs involved in transitioning. Further, increased institutional support could facilitate organic adoption and its absence is detrimental to increasing the …
Reflection And Acceptance: Small Town Ghosts Represented In Poetry, Adam Junker
Reflection And Acceptance: Small Town Ghosts Represented In Poetry, Adam Junker
Electronic Theses and Dissertations
This thesis discusses the theories of ethnography and ethnographic verse and applies these two theories in an original narrative in verse. Ethnography and ethnographic verse have a complicated relationship when it comes to a poet’s authority representing a certain place. Yet authenticity is never obtainable, since perceptions of a place are always subjective. That subjectivity allows a poet creative expression, as he or she shapes his or her relationship with a place and the people within it. The poet then must rely on elements like unifying imagery, dialect, surrealism, and empathetic insights. With these elements, a poet can identify with …
Effects Of A Large-Scale Habitat Enhancement Project On Largemouth Bass Behavior, Feeding, And Growth In Grand Lake, Texas, Chance Kirkeeng
Effects Of A Large-Scale Habitat Enhancement Project On Largemouth Bass Behavior, Feeding, And Growth In Grand Lake, Texas, Chance Kirkeeng
Electronic Theses and Dissertations
The quality of habitat, or the environment suitable for an organism to survive and reproduce, is often described by the type of features present and the quantity and condition of such features. Habitats in many ecosystems are declining and the loss of important habitats likely affects the success of organisms reliant upon those features. Habitats in reservoir ecosystems are especially at risk because of aging processes that are degrading reservoir habitats at faster rates than habitats in other ecosystems. Habitat enhancement projects are one tool used to combat the effects of aging reservoirs but the benefits of these management actions …
Electrochemical Sensor For Metal Ions And Phosphate Ion Detection For Biomedical And Agriculture Application, Md Faisal Kabir
Electrochemical Sensor For Metal Ions And Phosphate Ion Detection For Biomedical And Agriculture Application, Md Faisal Kabir
Electronic Theses and Dissertations
The goal of this work was to develop electrochemical sensors for heavy metal ions (e.g., Cd2+, Hg2+, Pb2+) and phosphate detections in fertilizers with high sensitivity, high detection range, repeatability and portability. The heavy metal electrochemical sensors were made using novel graphene oxide/silver nanowire (GO/AgNWs) composite as working electrode. The phosphate electrochemical sensors were fabricated using ammonium molybdate tetrahydrate/silver nanowires (AMT/AgNWs) modified screen printed electrode. Most of the heavy metals such as mercury, lead, cadmium, and arsenic have dangerous effects on human body. These ions can enter human body system via agriculture food chain …