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Leaf Appearance Rate Of Native And Introduced Grasses Under Different Intensities Of Continuous Grazing (Argentina), M G. Agnusdei, A Mazzanti, J Cordero, M H. Wade

IGC Proceedings (1977-2023)

Results of two grazing experiments on the effect of maintaining contrasting sward states upon leaf appearance rate of individual tillers (LAR) and tiller density (D) are reported. The following species were evaluated: Cynodon dactylon(Cd), Leersia hexandra(Lh), y Paspalum dilatatum(Pd) in a natural grassland of the Flooding Pampa, and Festuca arundinacea in a sown pasture. Except for Pd, LAR decreased with the increment of sward surface height. The degree of this morphogenetic plasticity varied among species. Implications for the stability of grass populations under continuous grazing are suggested; the effect of sward state upon LAR may represent one alternative way …

Grazing Systems Research In The Falkland Islands, J A. Kerr

IGC Proceedings (1977-2023)

Conceptual models of both the metabolisable energy (ME) balance of sheep in relation to the environment and the effects heavy grazing on vegetation and soils will form the basis for the development of a sustainable grazing system for wool production in the Falkland Islands. Research which integrates plant community ecology, agricultural meteorology, sheep energetics, grazing systems and socio-economics is described.

Wool Production From Annual Pastures Intensively Grazed By Wethers In Southern Western Australia, M W. Hyder, A N. Thompson, P T. Doyle, M Grimm, P J. Michael

IGC Proceedings (1977-2023)

Intensively grazing annual pastures in southern Western Australia to target amounts of feed on offer increased the greasy wool production per hectare three-fold or more compared to production from a setstocked grazing regime. Feed on offer was maintained at 0.8, 1.1, 1.4, 2.0, 2.8 t DM/ha during spring and wool growth per hectare compared to that of sheep set-stocked at the district average of 8 sheep/ha. The role of intensive grazing as a tactic to increase production and profitability of wool producers in Mediterranean environments is discussed.

Utilized Metabolizable Energy And Its Impacts On The Management Of Grass Pastures In The Central Chaco Of Paraguay, D Stosiek, A Glatzle, R Schultze-Kraft

IGC Proceedings (1977-2023)

Animal production from sown pastures of Gatton Panic (Panicum maximum Jacq.) and Estrella (Cynodon nlemfuënsis Vand.) on a luvic Kastanozem in the Central Chaco of Paraguay (mean annual rainfall 850 mm) was measured over two years (Sep. 1992 to Nov. 1994). The pastures were grazed continuously by Brahman X Hereford steers at six stocking densities, ranging from 0.5 to 2.0 American Animal Units (1 AU = 454 kg) per hectare. Herbage availability, chemical composition (ME, XP, fibre) and cattle liveweight gains were measured at four weekly intervals. Building regression models for Utilized metabolizable energy (UME in GJ/ha) and …

Milk Production From Ruzi Grass Alone, Ruzi Mixed With Leucaena And Ruzi Supplemented With Dolichos Lablab, S Tudsri, S Prasanpanich, S Swasdiphanich

IGC Proceedings (1977-2023)

Three groups of dairy cattle were compared under different grazing managements viz. strip-grazed on pure ruzi grass (Brachiaria ruziziensis), strip-grazed on mixed pasture between ruzi and leucaena (Luecaena luecocephala) and strip-grazed on pure ruzi and supplemented with lablab (Lablab purpureus). The results showed that the animals that received the legumes through supplementary or mixed with the grass produced higher in daily milk yield (13.63 and 13.26 kg/cow) and fat percentage (4.7 and 4.5) than that of the pure grass alone (12.00 kg/cow for milk yield and 4.2 % for fat). This advantage was due …

Zea Mays Grazing In Cattle Production Systems, V Mundy, B E. Anderson, T L. Gompert, T L. Mader, C A. Shapiro

IGC Proceedings (1977-2023)

Nebraska producers have used silage maize (Zea mays L.) hybrids as a grazed forage in dairy and beef production systems. In an onfarm case study, farmers and researchers collaborated to gather information on production practices, grazing management, and plant characteristics of grazing maize within three forage-based dairy and beef systems. Production practices were generally similar to conventional grain corn production, except that in one system maize was seeded directly into a suppressed grass sod. Milk production from grazing maize was 23 kg/day/animal, compared to 24 kg/day/ animal before using maize and 22 kg/day/animal after using maize. Average gain of …

Grazing Management Of Lotus In Eastern Australia: A Participatory Approach, M J. Blumenthal, J F. Ayers, Z Hochman

IGC Proceedings (1977-2023)

Both Lotus uliginosus Schkukr and L. corniculatus L. require lenient grazing management for persistent production. However, grazing systems, where Lotus is adapted in eastern Australia are based on intermittent set stocking. Conflict between plant ecophysiology and the adverse influences of traditional grazing systems that limit the adoption of new grazing management technology have been addressed by a participatory (co-learning) research and development process. The approach taken involved the use of a facilitator who ran an initial meeting to involve stakeholders and subsequently established “colearning” groups and “co-learning” experimental sites. These sites are monitored, progress is reviewed, and knowledge is …

Rhizobium Specificity In Leucaena, B F. Mullen, V E. Frank, R A. Date

IGC Proceedings (1977-2023)

Twenty-seven accessions of Leucaena, representing 20 species, were assessed for effective N-fixing symbioses in association with 13 strains of Rhizobium in N-free conditions in a glasshouse. Fifteen accessions formed effective symbioses with most strains of Rhizobium. Only 4 accessions required specific strains. Conversely, 9 of the strains of Rhizobium formed effective symbioses with most accessions of Leucaena. Only one strain was ineffective. Strains CB3060 and CB3126 were effective with 21 and 22 accessions of Leucaena, respectively.

Agronomic Performance Of 118 Leucaena Accessions In The Subtropical Environment Of Southeast Queensland, Australia, B F. Mullen, H M. Shelton

IGC Proceedings (1977-2023)

The DM productivity in contrasting environments of 118 Leucaena accessions was evaluated in sub-tropical Australia over a 2 year period. Harvests were timed to coincide with hot/wet and cool/dry seasons and data were analysed to compare growth in these environments. Eleven accession groups were identified by cluster analysis. Group 1, which contained F1 and F4 interspecific hybrids, were highly productive in all environments. Growth of L. leucocephala accessions was severely checked by psyllids in hot/ wet environments. Four groups comprising 60 accessions were unproductive in all environments. Identification of specific adaptation to cold temperature within groups in psyllid susceptible accessions …

The Effects Of Storage Period On The Germinability Of Rhodes Grass (Chloris Gayana), K C. Kawonga

IGC Proceedings (1977-2023)

An experiment was initiated to investigate the post harvest changes in the seed quality of Rhodes grass (Chloris gayana). The aim of the study was to find out the causes of poor germination of locally produced Rhodes grass seed. Random samples (72) were taken from a seed lot grown at Golden Valley Research Station. Seventy-two random samples were subdivided into groups of twelve and were stored at six locations. Half the samples were stored at room temperature and the other half were stored in the refrigerator for a period of one to six months. The germination test was …

Technology Development Of Pasture Seed Production For Small Scale Farmers In Uganda, P Lusembo, E N. Sabiiti, C Ebong

IGC Proceedings (1977-2023)

Pasture seed production by smallholder farmers in Uganda is hardly developed. The stages of development since the early 1960s are described as initial forage evaluation for adaptability and productivity of various species, seed production trials in relation to plant population, fertilizer requirements and the use of support systems for climbing forage legumes. Annual seed production by smallholder farmers, under an informal seed production system, is reported to have risen from 1,200kg in 1989 to over 35 metric tonnes of forage legume seed in 1995. This was attributed to the availability of appropriate seed production technology and the presence of a …

Flowering Cycle-Related Seed Quality Parameters On 15 New Guineagrass (Panicum Maximum Jacq.) Hybrids, R Usberti, A Usberti Jr, R S. Paterniani

IGC Proceedings (1977-2023)

Fifteen new guineagrass (Panicum maximum Jacq) hybrids, widely variable in flowering cycles, were tested for eleven seed quality parameters: seed viability (tetrazolium)-TZ; normal germination (with and without previous chemical scarification)-TG and NG; presence of viable seeds after the germination tests- RSTG and RSNG; seed dormancy-DTG and DNG; germination rate-TGR and NGR and seed vigor (after accelerated aging test) -AATG and AANG. The genetic materials used presented no significant differences for tetrazolium seed viability. Late- and intermediate-flowering genotypes showed the highest correlations between flowering cycle and seed quality for TG, NG, TGR and NGR (r= 0.468**; 0.731**; 0.422* and 0.683**, …

Effect Of Plant Density On Yield And Yield Components And Seed Chemical Composition Of Some Sunflower Varieties, N A. Noueldin, M E. El-Bially, B A. El-Ahmer, M G. El-Baz

IGC Proceedings (1977-2023)

The objective of this research is to study the effect of varieties (Mayak, Elorida 2000 and sigce 475), hill distance (20, 30 and 40 cm) and ridge width (50, 60 and 70 cm) on productivity of sunflower (Helianthus annus L.). The highest oil % was obtained by sowing sigco 475 at a 40 cm hills distince under 60 cm. ridge width and the highest oil yield feddan-1* as well as seed yield feddan-1 was obtained by sowing Mayak on 20cm hills under a 50cm ridge width.

Seed Banks In A Natural Pasture In Tasmania, Australia: Implications For Species Composition Change, D A. Friend, A S. Cameron, A J. Povey, P L. Dolan

IGC Proceedings (1977-2023)

Seed banks in a natural pasture in Tasmania were examined as part of a study of the effects of grazing on changes in species composition. The dominant native perennial grasses had relatively low seed banks, whereas annual grasses, sedges, rushes and a number of forbs had relatively high seed banks. The results confirm the vulnerability of the native grasses to local extinction in the event of loss of the established plants, e.g. through overgrazing.

Tropical Forage Seed Production In Southeast Asia: Current Status And Prospects, C Phaikaew, L Guodao, A Abdullah, M Tuhulele, E Magboo, B Bouahom, W Stur

IGC Proceedings (1977-2023)

The demand for forage seed in southeast Asia has increased in recent years. More than 1,200 tons of seed were produced in Thailand in 1995 with smaller quantities of seed having been produced in China, Lao PDR, Malaysia, Philippines and Indonesia. Large quantities have been produced of Brachiaria ruziziensis, Stylosanthes hamata, Stylosanthes guianensis and Panicum maximum. There are good prospects to increase forage seed production and to develop trade between countries in the southeast Asian region. There is a need to increase seed production of widely adapted species, and expand production of forages for other purposes such as turf …

Traditional Grassland And Fodder Management Systems In Tanzania And Potential For Improvement, R M. Otsyina, I Essai, D Asenga

IGC Proceedings (1977-2023)

The “Ngitiri” fodder conservation system was developed by the Sukuma agro-pastoralists as a strategy to alleviate acute dry season fodder constraints. This traditional agroforestry system provides the basis and opportunities for development of improved silvipastoral systems. Ngitiri is a major source of dry season fodder supply for livestock and thatch for roofing. The system is widespread in the Sukuma landuse system in central Tanzania. This paper presents the scope and importance of the Ngitiri system, management aspects, constraints, and farmers’ perceptions on improvement. Implications for agroforestry technology development in the Sukuma agropastoral system are also discussed.

Forage Seed Production In Egypt For Domestic Marker And For Export, M A. El-Nahrawy, A Rammah, O Niemelainen

IGC Proceedings (1977-2023)

In Egypt, no major effort is made to provide local and export markets with seeds of correctly identified and pure cultivars of forage crops in spite of the existence of all the essential factors for a successful seed industry. A wide genetic base of indigenous forage crops such as berseem clover and alfalfa, proper irrigation, a harvest and seed maturation period free from rain, sunshine and clear sky all year and highly fertile soils in isolated areas are available. Moreover, uncertified, uncontrolled and unidentified local seeds of berseem clover and alfalfa are highly demanded by foreign markets due to their …

Supporting Student Success In The Classroom: Creating A Socio-Emotional Healthy Environment For University Students, Amonda Matthewman-Isgrigg

Journal of the Scholarship of Teaching and Learning for Christians in Higher Education

Through the use of Astin’s IEO Model, Socio-Emotional Intelligence (SEI), and Maslow’s Hierarchy of Needs, this paper acknowledges college and university students’ academic and emotional needs and seeks to address the needs of current and future university students to have a supportive classroom environment as they earn their degrees. As the primary focus is on students, the well-being and training of instructors need to be addressed as well because they are the front line of the student support system. By analyzing the pre-existing inputs of the students, being the emotional and mental well-being of the student identified through Maslow’s Hierarchy …

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Journal of the Scholarship of Teaching and Learning for Christians in Higher Education

No abstract provided.

“The Role Of Modern Technologies In Effective Management Of Crowds”, Ayman El-Din

Journal of Police and Legal Sciences

Scientists started to think about the importance of developing crowd management methods, because of human gatherings - in different countries - have been accompanied by lots of disasters that have killed many and resulted in many injuries. Gathering crowd data is vital in the process of managing crowds, as crowd information contributes significantly to planning and decision-making processes and increasing communication between parties interacting with them, and data collected includes "the number of crowd members, crowd density, and problems that may occur”. Technology and technical awareness play an important role in “collecting, organizing, analyzing” real-time collected data of crowd. This …

A Micro-Internship Model For Engaging High School Students: A Pilot Of The Illinois Math Badging Initiative, Dania Ibrahim

Practitioner Toolkits and Resources

No abstract provided.

Mdf-Dta: A Multi-Dimensional Fusion Approach For Drug-Target Binding Affinity Prediction, Amit Ranjan, Adam Bess, Chris Alvin, Supratik Mukhopadhyay

Faculty Publications

Drug-target affinity (DTA) prediction is an important task in the early stages of drug discovery. Traditional biological approaches are time-consuming, effort-consuming, and resource-consuming due to the large size of genomic and chemical spaces. Computational approaches using machine learning have emerged to narrow down the drug candidate search space. However, most of these prediction models focus on single feature encoding of drugs and targets, ignoring the importance of integrating different dimensions of these features. We propose a deep learning-based approach called Multi-Dimensional Fusion for Drug Target Affinity Prediction (MDF-DTA) incorporating different dimensional features. Our model fuses 1D, 2D, and 3D representations …

Re: Butte Priority Soils Operable Unit (Bpsou) 2024 Final Unreclaimed Sites Quality Assurance Project Plan (Qapp), Mike Mcanulty

Silver Bow Creek/Butte Area Superfund Site

No abstract provided.

Exploring Teacher Perceptions On The Effectiveness Of The Freshman Academy, Renee C. Goode-Boyd

Walden Dissertations and Doctoral Studies

A Southeastern school district created freshman academies to assist freshman students with strategies and support they need to combat ninth-grade failure successfully, but little change was observed. The purpose of the study was to explore teachers' perceptions of the freshman academy's transition program structure, benefits, challenges, and effectiveness. The conceptual framework for this study encompassed elements of constructivist theory, which explains how children adapt to their environments and learn how to process information successfully. The research questions examined teachers' perceptions regarding the benefits, challenges, and perceived effectiveness of the freshman academy intervention program. The data for this basic qualitative study …

Investigating The Fatigue Life Of Asymmetric And Novel Helical Gear Drives, Rajesh S

Theses and Dissertations

The present research work investigates the contact and bending fatigue life of asymmetric helical gear and novel helical gear based on the finite element analysis. In the first phase, the contact and bending fatigue life of the asymmetric helical gear drives is estimated based on the strain life approach.

Further, a parametric study is carried out to investigate the influence of important helical gear parameters such as module, pressure angle, helix angle, gear ratio, teeth number and face width on contact and bending fatigue life of asymmetric helical gear drives. It is noted that the asymmetric helical gear shows a …

Superphenomena For Arbitrary Quantum Observables, Andrew N. Jordan, Yakir Aharonov, Daniele C. Struppa, Fabrizio Colombo, Irene Sabadini, Tomer Shushi, Jeff Tollaksen, John C. Howell, A. Nick Vamivakas

Mathematics, Physics, and Computer Science Faculty Articles and Research

Superoscillations occur when a globally band-limited function locally oscillates faster than its highest Fourier component. We generalize this effect to arbitrary quantum-mechanical operators as a weak value, where the preselected state is a superposition of eigenstates of the operator with eigenvalues bounded to a range, and the postselection state is a local position. Superbehavior of this operator occurs whenever the operator's weak value exceeds its eigenvalue bound. We give illustrative examples of this effect for total angular momentum and energy. In the latter case, we demonstrate a sequence of harmonic oscillator potentials where a finite-energy state converges everywhere on the …

Hormonal Differences In Perpetrators Of Intimate Partner Violence, Arturo L. Cantos, Gabriela Ontiveros, Robert K. Dearth, K. Daniel O'Leary

Psychological Science Faculty Publications

Objective: In order to gain a better understanding of the individual and joint impact of testosterone and cortisol on behavior, the present study was developed to test the differences in each hormone alone and conjointly between perpetrators of IPV and non-violent controls.

Method: Perpetrators of IPV on probation were compared to a control group of non-aggressive males from Hidalgo County in the Rio Grande Valley on baseline testosterone and cortisol, as well as several relevant questionnaires measuring aggression and trait anger. Differences in cortisol following exposure to a stressful event were also examined. Procedures included two laboratory visits consisting of …

Exploring Equity, Diversity, And Inclusion In Computer Science Undergraduate Curricula, Ouldooz Baghban Karimi, Giulia Toti, Fiona Mcneill, Alice Gao, Rutwa Engineer, Shanon Reckinger, Peggy Lindner, Jinyoung Hur, Rebecca Robinson, Anna Sollazzo, Richard Wicentowski

Engineering Management and Systems Engineering Faculty Research & Creative Works

One of the less explored approaches to foster equity, diversity, and inclusion (EDI) in Computer Science (CS) is through changes to the curriculum. Despite sporadic work on the adoption of Culturally Responsive Computing (CRC) and Universal Design for Learning (UDL), the inclusion of equity-minded courses, or modifications on specific elements of the curriculum such as introductory programming courses, there has never been a wide exploration or adoption of a successful equity-minded undergraduate CS curriculum. In this work, we explore undergraduate CS curricula, with a special focus on upper division, lower division, and service courses (courses offered to non-CS students). For …

Identification And Characterization Of Intrinsically Disordered Protein Regions, Guy Wayne Dayhoff Ii

USF Tampa Graduate Theses and Dissertations

This dissertation investigates protein intrinsic disorder and intrinsically disordered protein regions (IDPRs) through the development and application of advanced computational and experimental techniques. Chapter 1 provides an introduction to protein intrinsic disorder, outlining the historical context and fundamental concepts that highlight the importance of intrinsically disordered proteins (IDPs) and IDPRs in various biological processes. Chapter 2 focuses on the rapid prediction and analysis of protein intrinsic disorder. We introduce RIDAO (Rapid Intrinsic Disorder Analysis Online), a high-efficiency web-based tool that integrates multiple disorder predictors. RIDAO significantly outperforms existing predictors in computational efficiency, making it suitable for large-scale proteomic studies. We …

Fundamental Limits In Measuring The Anisotropic Rotational Diffusion Of Single Molecules, Weiyan Zhou, Tingting Wu, Matthew D. Lew

Electrical & Systems Engineering Publications and Presentations

Many biophysical techniques, such as single-molecule fluorescence correlation spectroscopy, Förster resonance energy transfer, and fluorescence anisotropy, measure the translation and rotation of biomolecules to quantify molecular processes at the nanoscale. These methods often simplify data analysis by assuming isotropic rotational diffusion, e.g., that molecules wobble within a circular cone. This simplification ignores the anisotropy present in many biological contexts that may cause molecules to exhibit different degrees of diffusion in different directions. Here, we loosen this assumption and establish a theoretical framework for describing and measuring anisotropic rotational diffusion using fluorescence imaging. We show that anisotropic wobble is directly quantified …