Digital Commons Network^™

The Planning Strategy For Electric Vehicle Charging Stations In The Road Transportation Network Synchronized With The Distribution Network, Muthukannan S

Theses and Dissertations

Electric vehicles (EVs) are recognized as a potentially effective solution to the environmental crisis and fuel deficit that modern metropolises are currently experiencing. Meanwhile, the expansion of EVs and their haphazard charging would negatively affect the road transportation network (RTN) as well as the electric distribution network (EDN). The proper infrastructure for the electric vehicle charging station (EVCS) will enhance the effective utilization of energy of both the networks.

This research work proposes a two-phase planning strategy for deploying Electric Vehicle Charging Stations (EVCS), considering both static and dynamic factors. The strategy uses a hybrid PSO-DS algorithm which is a …

S-Preclones And The Galois Connection SPol–SInv, Part I, Peter Jipsen, Erkko Lehtonen, Reinhard Pöschel

Mathematics, Physics, and Computer Science Faculty Articles and Research

We consider S-operations f : Aⁿ → A in which each argument is assigned a signum s ∈ S representing a “property” such as being order- preserving or order-reversing with respect to a fixed partial order on A. The set S of such properties is assumed to have a monoid structure reflecting the behaviour of these properties under the composition of S-operations (e.g., order-reversing composed with order-reversing is order- preserving). The collection of all S-operations with prescribed properties for their signed arguments is not a clone (since it is not closed under arbitrary identification of arguments), …

Persistent Interruption In Parvalbuminpositive Inhibitory Interneurons: Biophysical And Mathematical Mechanisms, Carol M. Upchurch, Christopher J. Knowlton, Simon Chamberland, Carmen C. Canavier

School of Graduate Studies Faculty Publications

Persistent activity in excitatory pyramidal cells (PYRs) is a putative mechanism for maintaining memory traces during working memory. We have recently demonstrated persistent interruption of firing in fastspiking parvalbumin-expressing interneurons (PV-INs), a phenomenon that could serve as a substrate for persistent activity in PYRs through disinhibition lasting hundreds of milliseconds. Here, we find that hippocampal CA1 PV-INs exhibit type 2 excitability, like striatal and neocortical PV-INs. Modeling and mathematical analysis showed that the slowly inactivating potassium current KV1 contributes to type 2 excitability, enables the multiple firing regimes observed experimentally in PV-INs, and provides a mechanism for robust persistent interruption …

Agenda De Investigación Para El Manejo Sustentable Del Manglar En Tamaulipas, México [Research Agenda For The Sustainable Management Of Mangroves In Tamaulipas, Mexico], Carlos Zamora-Tovar, Alejandro Fierro-Cabo, Glenda Nelly Requena-Lara

School of Earth, Environmental, & Marine Sciences Faculty Publications

Se presenta un análisis de la información ecológica disponible sobre los manglares de Tamaulipas, México. El objetivo fue establecer una línea base de conocimiento que defina el estado del arte a partir de la información publicada; actualizar la estructura forestal con datos propios observados en el año 2018; y determinar una agenda de investigación prioritaria para el manejo sostenible del ecosistema de man-glar, ecosistema de vital importancia por la gran variedad de recursos y servicios ambientales que aporta a la sociedad. La investigación bibliográfica recopiló 32 trabajos relevantes: 16 publicaciones formales, siete ediciones institucionales y nueve consideradas literaturas gris; recopilación …

Atrocity Prevention In The Digital Era: Adapting Norms, Laws, And Code To Changes In The Ways Atrocities Are Committed, David J. Simon, Samhitha Josyula, Joshua Lam, Julian D. Melendi

Genocide Studies and Prevention: An International Journal

Emerging digital technologies have changed some of the ways that genocides are planned and executed. This paper examines those differences, calling attention to how changes in the execution of genocide should prompt a shift in the approaches to atrocity prevention. It develops a conceptual framework addressing how atrocity prevention efforts might adapt to new technology within three realms of potential prevention efforts: the ethical (norms), the legal (laws), and the digital (code).

Chief Sustainability Officer’S Role Centrality And Corporate Sustainability Performance, Taiwo Abraham, Gabriel Owusu, Xuan Wang

Management Faculty Publications

Corporate Sustainability Performance (CSP) has gained substantial attention as firms recognize its potential impact on competitive advantage. In response, there has been a significant increase in the appointment of Chief Sustainability Officers (CSOs) tasked with managing sustainability performance and integrating systemic sustainability initiatives for business growth. In this research, we draw upon upper echelon theory and social network theory to argue that merely having a CSO does not enhance CSP. However, the centrality of CSO within organizational networks significantly augments CSP. Further, leveraging literature from institutional theory and stakeholder theory, we provide a fresh perspective on how organizations should approach …

Lateral Variations Of Crustal Attenuation And Separation Of Intrinsic And Scattering Attenuation In Alaska, Anuradha Mahanama

Electronic Theses and Dissertations Archive

This study synthesizes findings from a comprehensive seismic attenuation investigation across Alaska, employing data from the EarthScope USArray spanning 2014 to 2020. The analysis integrates crustal seismic (Q_Lg^(-1)) attenuation mapping with an examination of intrinsic (Q_s^(-1)) and scattering (Q_i^(-1)) attenuation contribution on total seismic wave attenuation. By employing the Multiple Lapse Time Window Analysis (MLTWA) and focusing on earthquakes with magnitudes ranging from 2.0 to 6.5, this research delineates the complex interplay of geological structures with seismic wave attenuation behavior, offering significant insights for regional seismic hazard assessments. The crustal seismic (Q_Lg^(-1)) attenuation component of the study reveals significant variations …

Teacher Retention And School Characteristics In Tennessee: A Human Relations Theory Correlation Study, Crystal Sarina Watts

Electronic Theses and Dissertations Archive

Teacher retention is a foundational issue and schools have historically struggled to retain teachers. Previous research indicates that teachers leave the profession at high rates before year five of teaching expertise. Lack of teacher retention contributes to instability and lack of trust in school districts. This secondary data study explores whether teacher retention predicts institutional outcomes based on teacher perceptions of school climate, school leadership, student achievement, and student behavior in Tennessee public school districts. This research answers whether student achievement, school climate, school leadership, percentages of disadvantaged, special education, minority, suspended, and chronically absent students predict teacher retention in …

Exploring The Social Processes Influencing The Well-Being And Social Integration Of Systemically Marginalized Students In Higher Education: A Mixed-Methods Approach, Zeinab Abbas Hachem

Dissertations and Theses

Comprising two manuscripts, this dissertation employs a mixed-methods approach to comprehensively examine the intrapersonal and interpersonal processes influencing the socioemotional well-being and social integration of systemically marginalized students. The first manuscript quantitatively explored the relationship between ethnic identity commitment and indices of well-being, the mediating role of social relationships, and the moderating roles of gender and immigrant generation status among Latinx college students (N = 707). Results suggested that ethnic identity commitment was positively associated with socioemotional well-being. Although both types of relationships were significant mediators on their own, maternal (vs. peer) relationship quality was the stronger mediational influence. Furthermore, …

Revealing Structural Evolution Of Nickel Phosphide-Iron Oxide Core–Shell Nanocatalysts In Alkaline Medium For The Oxygen Evolution Reaction, Ryan H. Manso, Jiyun Hong, Wei Wang, Prashant Acharya, Adam S. Hoffman, Xiao Tong, Feng Wang, Lauren F. Greenlee, Yimei Zhu, Simon R. Bare, Jingyi Chen

Chemistry & Biochemistry Faculty Publications and Presentations

Metal phosphide-containing materials have emerged as a potential candidate of nonprecious metal-based catalysts for alkaline oxygen evolution reaction (OER). While it is known that metal phosphide undergoes structural evolution, considerable debate persists regarding the effects of dynamics on the surface activation and morphological stability of the catalysts. In this study, we synthesize NiP_x-FeO_x core–shell nanocatalysts with an amorphous NiP_x core designed for enhanced OER activity. Using ex situ X-ray absorption spectroscopy, we elucidate the local structural changes as a function of the cyclic voltammetry cycles. Our studies suggest that the presence of corner-sharing octahedra in the …

Re: Butte Priority Soils Operable Unit (Bpsou) Final Unreclaimed Sites Field Sampling Plan (Fsp) Package #11: Ur-49 And Ur-50, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Re: Butte Priority Soils Operable Unit (Bpsou) Final Unreclaimed Sites Field Sampling Plan (Fsp) Package #10: Ur-44, Ur-45, Ur-46, Ur-47, And Ur-48, Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Residential Metals Abatement Program Construction Completion Report (Non- Residential Parcels – Indoor Dust) Kennedy Elementary, Christopher Berg, Thomas J. Beckman

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Preliminary Analysis Of Per-And Polyfluoroalkyl Substances (Pfas) In Surface Waters Of The West Plains Region Of Spokane County, Jerusha Hampson

2024 Symposium

Per-and Polyfluoroalkyl Substances (PFAS) have become a national issue as regulatory limits for these toxins have just recently been put into the Clean Water Act. The West Plains has been significantly impacted by PFAS contamination due to the decades-long use of aqueous film-forming foam (AFFF) for firefighting training at both Fairchild Airforce Base and the Spokane International Airport. Though research is still underway, it is known that PFAS contamination in West Plains groundwater is significant and widespread. This study focuses on West Plains surface waters, as there is currently less information about how these water bodies are impacted by PFAS. …

Live-Weight Gain Of Steers Grazing African Star Grass Four Herbage Allowances, J Perez-Perez, J O. Hernandez-Velez, J G. Herrera-Haro, R Barcena-Gama

IGC Proceedings (1977-2023)

The objective was to determine weight changes of steers grazing African star grass (Cynodon plectostachyus) at four herbage allowances (2.0, 2.5, 3.0 and 3.5 kg of dry matter/100 kg of live weight day-1). A rotational grazing system with 10 grazing days and 30 days rest was followed. A Split Plot Design with four replications was used. Response variables were: daily gain per steer (DGS) and per hectare (DGH), dry matter forage yield (FY), % of utilization (% U) and in vitro dry matter digestibility (DMIVD). DGS and DGH were not different (P >0.05) among allowances and grazing periods. …

Strategic Use Of Brachiaria Decumbens Pasture To Beef Heifers During Dry Season, E G. Cardoso, N F. Seiffert, J Marques Da Silva, V.P. B. Euclides, J M. Vieira

IGC Proceedings (1977-2023)

The main objective of this study was to evaluate a Brachiaria decumbens pasture, instead of a common rangeland, for zebu beef heifers during the dry season of the year as a means of anticipating the first calving age from four to three years of age, and so improve the production rate of the herd. Daily liveweight gains (DLWG) were analyzed for the effects of year and three stocking rates during the dry season (SR1=1.5; SR2=2.0 and SR3=2.5 head/ha). The main effect on heifers DLWG was the year (P<0.01), but SR was also important (P<0.05), mainly during the last half of the dry season when pastures are under severe constraints such as soil moisture deficit and low temperatures. The lowest SR presented the highest DLWG (0.204a, 0.174ab and 0.145b kg/head, respectively for SR1, SR2 and SR3), during the dry season. If climatic conditions are not exceptionally bad, heifer first calving occurs at 37 months of age when reared on B. decumbens.

Quality Grassland For Dairy Production In North-West Spain, A Gonzalez-Rodriguez

IGC Proceedings (1977-2023)

An experiment with two groups of 15 Friesian cows grazing independent areas, with no N and 240 kg N ha-1, was run during two years to see the levels of milk production based on a grass/white clover pasture, maintaining high levels of herbage quality. N application decrease clover content from 55% to 42%. The total DM response to N was low. Herbage utilization was maintained similar in both treatments. Moderate levels of milk production can be reached, more than 4000 litres cow-1 and 9000 litres ha-1, with low use of concentrates, only 400 kg cow-1. Crude protein levels were high …

Sward Height On The Performance Of Cow-Calf Units And Yearling Steers Grazing Cool Season Pasture, E C. Prigge, W B. Bryan, E L. Nestor

IGC Proceedings (1977-2023)

Performance and grazing time of cow-calf units and yearling steers were determined over four years on naturalized cool season pastures maintained at a sward height of 4-6, 6-8, 8-10, or 10-12 cm. Daily gains of cows and steers responded quadratically (P<0.05) to increasing sward heights, with gains maximized at 8-10 cm. Milk production of the cows and gain of the calves were not affected (P>0.10) by sward height. Grazing days (cow-calf unit/hectare) decreased linearly (P<0.01) with increasing sward height. The proportion of the day spent grazing for cows and steers decreased in a linear manner (P<0.05) as pasture height increased. Cows spent less time grazing than steers (P<0.05) at all but the low pasture height.

Buffer Grazing For A Twelve Month Cow-Calf Production System, W B. Bryan, E C. Prigge, D J. Flaherty, G E. D'Souza

IGC Proceedings (1977-2023)

Set stocking is a widely used grazing management for beef cow-calf production on Appalachian hill land pastures of the USA. A replicated study was conducted to compare a conventional (set stocking) and buffer grazing management. For the buffer system, grazing area was restricted in the spring and hay was harvested from the ungrazed area. In summer, a portion of this area (buffer) was grazed and a second cutting of hay removed from the remaining area. For the conventional treatment a fixed area was set stocked and hay was harvested on an area designated for hay only. Land areas and fertilizer …

Intensive Rotational Grazing Systems For Dairying In A Subtropical Environment: Animal, Plant, And Soil Responses, J H. Fike, C R. Staples, L E. Sollenberger, D A. Graetz

IGC Proceedings (1977-2023)

Forage species, stocking rate, and supplementation rate effects upon performance of lactating dairy cows were studied. Forage mass and nutritive value and nutrient concentration in shallow groundwater also were measured. Cows (n = 44) grazed bermudagrass (Cynodon dactylon) or rhizoma peanut (Arachis glabrata), stocked at 4.9 or 7.4 cows ha-1, and 2.5 or 4.9 cows ha-1, respectively. Pelleted concentrate:whole cottonseed (80:20) was offered twice daily post milking at 1 kg per 2 or 3 kg of daily milk production. Cows grazing rhizoma peanut produced more (P = .076) milk per day but had greater (P = …

High Moisture Corn Supplementation Of Different Dry Matter Content To Cows Grazing Temperate Pasture, D H. Rearte, H Alvarez, F Santini

IGC Proceedings (1977-2023)

The objective of this study was to evaluate grazing dairy cows performance supplemented with high moisture corn of different dry matter content. Cows grazed fresh forage oat day and night and received 5 kg DM high moisture corn daily. Treatments 1 and 2 were high moisture corn of 30% and 18% moisture content respectively. Twenty Holstein cows were used for milk production and composition studies and six rumen fistulated cows were used for rumen digestion studies. Milk production and composition and body weight gain were not affected by the dry matter content of the supplemented high moisture corn. Related to …

Intake Of High Producing Holstein Cows Grazing Pasture Or Fed A Total Mixed Ration, E S. Kolver, L D. Muller

IGC Proceedings (1977-2023)

The ability of a pasture diet to support a high dry matter intake without supplementary feed was determined using 16 high producing Holstein cows. Cows (n=8) were adapted to an all-pasture diet by incrementally reducing the amount of total mixed ration (TMR) fed over four weeks. A control group of cows (n=8) remained in confinement and were fed a TMR. Performance of grazing cows differed significantly (P < 0.001) from TMR fed cows by intake (19.0 vs. 23.4 kg DM/d), milk production (29.6 vs. 44.1 kg/d), milk protein content (2.61 vs. 2.80%), liveweight (562.1 vs. 597.3 kg), and condition score (2.02 vs. 2.50). Results indicate that intake of good quality pasture is higher than previously estimated for high producing Holstein cows in the USA, but that milk production is 15 kg/d less than when cows are fed a TMR.

Cattle Production And Botanical Composition In Continuously Stocked Grass-Clover Swards, A Elgersma, H Schlepers

IGC Proceedings (1977-2023)

The performance of grass-clover mixtures was evaluated under cattle grazing, and the relations between grass variety, clover content and animal production were studied during four years at three locations. The prostrate diploid perennial ryegrass variety formed a dense sward with less clover and less weeds than the tetraploid or the erect diploid ryegrass varieties, which contained about the same amount of clover in the mixture. The ryegrass tiller density was lowest in the tetraploid. These differences between mixtures were not reflected in differences in animal performance or net energy production.

Production Efficiency Benchmarks For Irrigated Dairying In South Eastern Australia, K E. Pritchard, O A. Gyles, D P. Armstrong, S L. Spiteri

IGC Proceedings (1977-2023)

Milk production from grazed irrigated pasture is an important industry in south eastern Australia. Irrigation water is essential for perennial pastures, but the efficiency with which the irrigation water is used to produce milk varies widely between farms. As irrigation water is a limiting resource, future productivity increases will depend on increasing the amount of milk produced per unit of water applied. This research project estimates metabolisable energy utilised from grazed pasture, using energy values for animal requirements, products and feedstuffs. Efficiency criteria, in terms of production per hectare of irrigated pasture, per megalitre of irrigation water, and per cow …

Grazing Management And Nitrogen Fertilizer Effects In Grazing Systems For Beef Cows, D G. Morrison, C C. Willis, D L. Castle, G J. Cuomo

IGC Proceedings (1977-2023)

Four 8-ha areas, primarily Cynodon dactylon forage, were overseeded in autumn with annual ryegrass (Lolium multiflorum) and clover (Trifolium incarnatum and Trifolium repens). Two areas received no nitrogen (N) fertilizer and two received 168 kg N/ha annually. Within N level (2 x 2 factorial), one area was divided into 4 paddocks (pad) and the other into 16 pad for rotational grazing. Spring-calving beef cows were stocked (2.5/ha) year-round on each area with calves weaned in October. Annual dry matter forage accumulation was greater where N was applied (18.2 vs 14.2 Mg/ha, P=.02) but was unaffected by …

Sheep Production On An Annual And Perennial Pasture In Southwest Australia, P Sanford, J Gladman, L Cransberg

IGC Proceedings (1977-2023)

Sheep production on an annual and perennial pasture stocked at 11.5 dse/ha, was compared in a mediterranen environment at Manypeaks in Western Australia. The annual sward comprised of 48% subterranean clover (Trifolium subterraneum L.), 20 % annual grasses (Lolium rigidum Gaudin, Hordeum leporinum Link, Vulpia bromoides (L.) S.F. Gray) and 32% capeweed (Arctotheca calendula L.). The perennial sward was 19% kikuyu (Pennisetum clandestinum), 36% subterranean clover, 43% annual grasses (Lolium rigidum Gaudin, Hordeum leporinum Link, Vulpia bromoides (L.) S.F. Gray) and only 2% capeweed which was displaced by kikuyu. Both pasture types had similar growth …

Milk Production And Composition In Charolais And Polled Hereford Cows On Different Forage Systems, J M. Phillips, R B. Simpson, J D. Shockey, S C. Nickerson

IGC Proceedings (1977-2023)

The objective of this study was to study the effect of different winter and summer forage systems on milk production and composition in beef cows. Charolais and Polled Hereford cows were assigned to receive either grass hay and supplemental feed or ryegrass pasture during the late winter/early spring period, and then allowed to either graze warmseason grass pasture on a continuous or rotational basis during the summer period. Representative cows were machine-milked on day 48 (hay/feed vs ryegrass), on days 117 and 175 (continuous vs rotational grazing) postpartum. Milk weights were recorded and converted to 24- hour yields. Samples were …

Intensive Grazing Management For Dairy Heifers, J R. Rodgers

IGC Proceedings (1977-2023)

After grazing our milking herd on intensive rotational grazing for three years utilizing many paddocks and different types and configurations of fencing to control the wise use of the grass and legume species already on our farm, we moved to develop our second farm into a commercial heifer growing project. This paper will attempt to share our practical experience through three years of grazing upwards of 400 Ayrshire and Holstein heifers from six months of age until just prior to calving. Our ultimate objective is year end financial solvency.

Pasture Production And Weaned Heifer Performance From Tropical Grasses, P Mislevy, F M. Pate, F G. Martin, L M. Rutter

IGC Proceedings (1977-2023)

The purpose of this experiment is to determine the influence of energy supplement (molasses 80% and cottonseed meal 20% slurry) fed to heifers while grazing Florico and Florona stargrass (Cynodon nlemfuensis Vanderyst var nlemfuensis) and Florakirk bermudagrass (C. dactylon) pastures. Stocking rate of heifers was 5.9 animals ha- 1 averaging 230 kg. Heifers were rotated weekly and were on a 4 pasture rotation. Grasses were allowed a 3-wk regrowth period. Mean forage growth rate cycle-1 day-1 was not different (P>0.05) between grasses; however Florico and Florona yielded 8 and 21% more cycle- 1 than Florakirk. Mean herbage …

Seasonal Distribution Of Forage Yield From A "Natural" Pasture Under Rotational Grazing, W R. Kanneganti, T R. Dhiman, R P. Walgenbach, L Massingill, M P. Russelle, L D. Satter

IGC Proceedings (1977-2023)

A 2-yr grazing study was conducted to quantify forage available daily for cattle intake from a natural pasture managed under rotational grazing. Grazing was initiated around 1 May, and was managed with a rotation length of about 17 d each for cycles 1 and 2, and 30 d each for the rest. In 1994, under adequate moisture conditions, forage availability during 5/1-6/1, 6/1-8/15, 8/15-9/15, and 9/15-10/ 15 was 77, 66, 38 and 14 kg DM ha-1 d-1, respectively, resulting in a total yield of 8580 kg ha-1 in 175 d. In 1995, a prolonged period of dry summer reduced the …