Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 524491 - 524520 of 5211928

Full-Text Articles in Entire DC Network

A Farmer-Based Decision Support System For Managing Pasture Quality On Hill Country, I. M. Brookes, D. I. Gray Aug 2023

A Farmer-Based Decision Support System For Managing Pasture Quality On Hill Country, I. M. Brookes, D. I. Gray

IGC Proceedings (1977-2023)

Despite considerable effort to promote formal feed budgeting in New Zealand, survey data suggests it is only adopted by 20% of farmers (Nuthall & Bishop-Hurley, 1999). Recent work (Gray et al., 2003) has identified that farmers may use a different approach - micro-budgeting - to manage feed. Rather than operate at a whole farm level, micro-budgeting focuses at the paddock level. This paper describes micro- budgeting as used by a high performing hill country sheep and cattle farmer to manage pasture quality over spring and a decision support model developed to help other farmers undertake this process.

Go to article

Enhancing Grasslands Education With Decision Support Tools, Helen G. Daily, J. M. Scott, J. M. Reid Aug 2023

Enhancing Grasslands Education With Decision Support Tools, Helen G. Daily, J. M. Scott, J. M. Reid

IGC Proceedings (1977-2023)

We have successfully used Decision Support Tools (DST) relevant to the management of grazing enterprises to enhance problem solving skills of undergraduates in Australia. Tools such as GrassGrotm (Moore et al., 1997) and GrazFeedtm (Freer et al., 1997) are accessed from a central server by authorised users at many widely dispersed Universities across Australia using remote access to thin-client technology via an Internet portal. This has been supplemented with training for lecturers. Experience in developing appropriate teaching and learning materials and the reliable delivery of simulation software to many clients has enhanced learning outcomes at tertiary …

Go to article

Systems Simulation Assists Land Capability Estimation In Australia’S Temperate Grasslands, Richard J. Simpson, L. Salmon, P. Graham, A. D. Moore, A. Stefanski, D. J. Marshall, J. R. Donnelly Aug 2023

Systems Simulation Assists Land Capability Estimation In Australia’S Temperate Grasslands, Richard J. Simpson, L. Salmon, P. Graham, A. D. Moore, A. Stefanski, D. J. Marshall, J. R. Donnelly

IGC Proceedings (1977-2023)

Intensification of production in the water-limited grasslands of temperate Australia has increased the need to quantify their sustainable carrying capacity. Empirical rainfall-based rules for estimating stocking rate fail when used in districts with differing weather patterns, or when soil and pasture resources limit the utilisation of rainfall. Grazing systems simulation should help to overcome these problems because local conditions can be taken into account. This study investigated the impact of soil resources on potential stocking rate, profitability and production risk in a local climatic area of the southern tablelands of NSW, Australia.

Go to article

Determination Of Optimal Grazing Management For Dairy Cows In Galicia (Spain) Using A Decision Support System, O. P. Vázquez Yáñez, A. González Rodríguez, J. López Díaz Aug 2023

Determination Of Optimal Grazing Management For Dairy Cows In Galicia (Spain) Using A Decision Support System, O. P. Vázquez Yáñez, A. González Rodríguez, J. López Díaz

IGC Proceedings (1977-2023)

GRAZEMORE is a decision support system (DSS) oriented to evaluate dairy grazing management decisions on pasture growth and milk production. The system integrates a herbage growth model (Barrett et al., 2003) and a herbage intake model (Delagarde et al., 2004) and has been validated in several EU countries. The objective of this work was to use this DSS to determine optimal grazing management of dairy cows at three supplementation levels and three grazing management strategies under Galician conditions.

Go to article

Forecasting Forage Yields Using The Arima Model In Pastoral Areas Of East Africa, Robert J. Kaitho, J. W. Stuth, Jay Angerer, A. A. Jama Aug 2023

Forecasting Forage Yields Using The Arima Model In Pastoral Areas Of East Africa, Robert J. Kaitho, J. W. Stuth, Jay Angerer, A. A. Jama

IGC Proceedings (1977-2023)

Predicting forage supply is an age old quest for pastoralists, particularly in fragile and drought- prone areas of Africa. Traditional methods of forecasting forage used by many communities have become less effective due to climate change, frequent droughts and decline of grazing areas. Conflicts relating to available forage and water resources are increasing, because more marginal lands are put to crop production. A new forage forecasting technology has been developed that provides a comprehensive view of current forage condition (Stuth et al., 2004). A multiple species grazing land plant growth hydrology based model (PHYGROW) was parameterised with site-specific soil, …

Go to article

Sensitivity Analysis Of A Growth Simulation For Finishing Lambs, P. C. H. Morel, B. Wildbore, I. M. Brookes, Paul R. Kenyon, R. W. Purchas, S. Ramaswami Aug 2023

Sensitivity Analysis Of A Growth Simulation For Finishing Lambs, P. C. H. Morel, B. Wildbore, I. M. Brookes, Paul R. Kenyon, R. W. Purchas, S. Ramaswami

IGC Proceedings (1977-2023)

A stochastic lamb growth simulation model with a set of heuristic rules has been developed to evaluate management strategies for a solely pastoral grazing system in New Zealand (Morel et al., 2005). In the present paper the results of a sensitivity analysis for this model are presented.

Go to article

A Model To Evaluate Buying And Selling Policies For Growing Lambs On Pasture, P. C. H. Morel, B. Wildbore, I. M. Brookes, Paul R. Kenyon, R. W. Purchas, S. Ramaswami Aug 2023

A Model To Evaluate Buying And Selling Policies For Growing Lambs On Pasture, P. C. H. Morel, B. Wildbore, I. M. Brookes, Paul R. Kenyon, R. W. Purchas, S. Ramaswami

IGC Proceedings (1977-2023)

In pastoral sheep finishing systems, farmers aim to maximize profitability by deciding on when and how many animals to buy and/or sell, while taking into account feed availability and current prices. This paper describes a stochastic lamb growth simulation model with a set of heuristic rules, which has been developed to financially evaluate different management strategies for growing lambs on pasture.

Go to article

Canasta - Crop Niche Selection For Tropical Agriculture, A Spatial Decision Support System, R. O'Brien, M. Peters, R. Corner, S. Cook Aug 2023

Canasta - Crop Niche Selection For Tropical Agriculture, A Spatial Decision Support System, R. O'Brien, M. Peters, R. Corner, S. Cook

IGC Proceedings (1977-2023)

Farmers in the developing world frequently find themselves in uncertain and risky environments, often having to make decisions based on very little information. Risks for smallholder farmers are often critical because of their poverty. In addition, in the tropics and subtropics, the natural environment is spatially and temporally variable and often harsh, thereby increasing the uncertainty faced by these farmers. This research aims to improve forage adoption decisions in the developing world, thereby increasing sustainable intensification and ultimately contributing to increased sustainable world food production and the alleviation of under-nutrition.

Go to article

An Internet-Based Tool For Use In Assessing The Likely Effect Of Intensification On Losses Of Nitrogen To The Environment, N. J. Hutchings, B. M. Petersen, I. S. Kristensen, N. Detlefsen, M. S. Jørgensen Aug 2023

An Internet-Based Tool For Use In Assessing The Likely Effect Of Intensification On Losses Of Nitrogen To The Environment, N. J. Hutchings, B. M. Petersen, I. S. Kristensen, N. Detlefsen, M. S. Jørgensen

IGC Proceedings (1977-2023)

The EU Nitrates, Habitat and National Emissions Ceilings directives and the Kyoto Agreement mean that agricultural losses of NO3, NH3 and N2O are under scrutiny by national and international environmental authorities. When farmers wish to intensify their operations, the authorities must then assess the likely environmental impact of the change in operation. The FARM-N internet tool was developed to help farmers and authorities agree how the farm will be structured and managed in the future, and to provide an objective assessment of the environmental losses that will result.

Go to article

Software Ppbb_Mx: Potential Productivity Modelling Of Brachiaria Brizantha (Cultivars Marandu And Xaraés), E. R. Detomini, D. Dourado Neto Aug 2023

Software Ppbb_Mx: Potential Productivity Modelling Of Brachiaria Brizantha (Cultivars Marandu And Xaraés), E. R. Detomini, D. Dourado Neto

IGC Proceedings (1977-2023)

Recent improvements in computer capacity and technology allow models to be built to simulate the attributes of many agricultural processes and systems. Although Brachiaria brizantha is the most cultivated tropical grass species in Brazil, there is no single tool to predict its production under optimal conditions. The objective of this paper is to present PPBB_MX software to calibrate and simulate (using a stochastical procedure) the shoot and total biomass potential productivity (output variables) of Brachiaria brizantha as a function of the following input variables: local latitude, season (from cutting date - Julian day), length of regrowth (time, days) and climate …

Go to article

N-Mineralisation And Phosphorous: Important Elements In Decision Support For Grassland Systems, A. Lisbeth Nielsen, C. C. Hoffmann Aug 2023

N-Mineralisation And Phosphorous: Important Elements In Decision Support For Grassland Systems, A. Lisbeth Nielsen, C. C. Hoffmann

IGC Proceedings (1977-2023)

Leaching of N and P from extensively managed grasslands on organic soils varies considerably. In environmentally sensitive areas it is important to diminish leaching by appropriate agricultural management. In Denmark low grazing intensity and management without fertilisation have been given a high priority. The type of soil has not been equally in focus, and it seems that the effect of cutting, compared to grazing, resulting in a higher removal of nutrients (e.g. Benke et al., 1992) can be used more strategically. The objective of this case study was to combine data from management strategies with data from leaching examinations …

Go to article

Artturi Assists Finnish Advisers And Farmers To Succeed In Grass-Based Dairy Production, Marketta Rinne, Pekka Huhtanen, Kaisa Kuoppala, H. Nikander, J. Nousiainen, M. Hellämäki, L. Nyholm, J. Helminen, K. Lampinen, M. Maisi, M. Korhonen Aug 2023

Artturi Assists Finnish Advisers And Farmers To Succeed In Grass-Based Dairy Production, Marketta Rinne, Pekka Huhtanen, Kaisa Kuoppala, H. Nikander, J. Nousiainen, M. Hellämäki, L. Nyholm, J. Helminen, K. Lampinen, M. Maisi, M. Korhonen

IGC Proceedings (1977-2023)

Artturi is a collective name for a wide range of services. It is a common tool for different bodies who share an interest in strengthening grass-based dairy production in Finland: research, advisory service and industries. The Service is named after A. I. (Artturi Ilmari) Virtanen, the Finnish scientist who was awarded the Nobel prize in 1945, partly based on his work in developing the ensiling process of grass. The Artturi web site is available in Internet at: http://www.agronet.fi/artturi. Access to Artturi Services is free and no registration is required. The language used is Finnish. During summer 2003, 15,000 visits were …

Go to article

Involvement Of Maasai Pastoralists In Participatory Rangeland Management Planning And Implementation, Evelyne Kiptot, W, Ego, D. Ochieng, A. Mohamed Aug 2023

Involvement Of Maasai Pastoralists In Participatory Rangeland Management Planning And Implementation, Evelyne Kiptot, W, Ego, D. Ochieng, A. Mohamed

IGC Proceedings (1977-2023)

The pastoral Maasai lifestyle was and still is traditionally based on subsistence dairy and meat production. But with population increase, the rangelands can no longer sustainably support livestock production systems. Most of the rangelands which are used for grazing have been subdivided and partially cleared to pave way for cultivation, because of increased population pressure (Ego et al., 1999). This has led to a tendency to overgraze, thus impacting negatively on secondary production from the range. In order to effectively reverse this trend, the users of the rangeland resources were brought together to analyse constraints and opportunities for sustainable …

Go to article

Management Of Pasture Quality For Sheep On New Zealand Hill Country, D. I. Gray, J. I. Reid, P. D. Kemp, I. M. Brookes, D. Horne, Paul R. Kenyon, C. Matthew, S. T. Morris, I. Valentine Aug 2023

Management Of Pasture Quality For Sheep On New Zealand Hill Country, D. I. Gray, J. I. Reid, P. D. Kemp, I. M. Brookes, D. Horne, Paul R. Kenyon, C. Matthew, S. T. Morris, I. Valentine

IGC Proceedings (1977-2023)

The control of pasture quality over spring is central to the achievement of high levels of sheep performance on hill country. Despite this, with the exception of the work of Lambert et al. (2000), little is known about how farmers actually manage pasture quality. The purpose of this research was to describe how a high performing hill country farmer manages pasture quality on their sheep area over spring and from this develop a framework that will assist other farmers improve their pasture management.

Go to article

Decision Support System For Grassland-Based Sheep Production In The Chilean Patagonia, R. R. Vera, S. Morales, C. Aguilar Aug 2023

Decision Support System For Grassland-Based Sheep Production In The Chilean Patagonia, R. R. Vera, S. Morales, C. Aguilar

IGC Proceedings (1977-2023)

Temporal decision-making in sheep production systems of the Chilean Patagonia is influenced by forage availability in existing paddocks, which in turn is determined by previous use, localisation, climate and soil. Also, production strategies are evolving, with a trend towards fat lamb production, introduction of new breeds and a reduction in the importance of wool production. The objective of this study was to develop an initial version of a spatial empirical simulation model based on extremely limited information, to predict forage growth and sheep production so that decision-makers can assess alternative production strategies.

Go to article

Accelerating The Impacts Of Participatory Research And Extension: Lessons From Laos, Joanne E. Miller, Viengxay Photakoun, J. G. Connell Aug 2023

Accelerating The Impacts Of Participatory Research And Extension: Lessons From Laos, Joanne E. Miller, Viengxay Photakoun, J. G. Connell

IGC Proceedings (1977-2023)

The role of participatory research and extension in stimulating farmer uptake and adaptation of beneficial technologies has been demonstrated over the last two decades in both developed and developing countries. The challenge is to move beyond simply trialling new technologies with farmers on a small scale to enabling significant livelihood impacts across larger numbers of households, villages and districts. This paper presents results of a project in Lao PDR exploring ways to accelerate and spread localised impacts in complex upland farming systems.

Go to article

A Decision Support System For Monitoring Livestock Diet Quality And Performance: Verification Study On Cattle, Adami Tulu, Ethiopia, A. A. Jama, G. Tolleson, J. W. Stuth, Abule Ebro, K. Zander, Robert J. Kaitho Aug 2023

A Decision Support System For Monitoring Livestock Diet Quality And Performance: Verification Study On Cattle, Adami Tulu, Ethiopia, A. A. Jama, G. Tolleson, J. W. Stuth, Abule Ebro, K. Zander, Robert J. Kaitho

IGC Proceedings (1977-2023)

Fecal profiling technology based on near infrared spectroscopy (NIRS) has been widely used in the U.S. to predict the diet quality and performance of free-ranging animals (e.g. Leite & Stuth 1995, Lyons & Stuth 1992, Lyons et al., 1993, Stuth et al., 1999, Tolleson et al., 2001). This technology is linked with the Nutritional Balance Analyzer (NUTBAL-PRO) model to form the core of a nutritional advisory system for livestock producers in the United States. This model predicts changes in body weight and condition for a broad range of livestock classes for cattle, sheep and goats. To test …

Go to article

Irish Grassland Association: Delivering The Benefits From Grassland, S. Flanagan Aug 2023

Irish Grassland Association: Delivering The Benefits From Grassland, S. Flanagan

IGC Proceedings (1977-2023)

The Irish Grassland Association (IGA) is Ireland's leading forum for discussing the science of grass and animal production, the economics and finances of dairy, beef cattle and sheep farm enterprises. Membership is 800 and is a lively mix of progressive farmers (70%), research scientists, advisers and agribusiness personnel. The IGA is a member of the European Grassland Federation and has close ties with the Ulster Grassland Society, Fermanagh Grassland Club and the British Grassland Society.

Go to article

The Role Of The British Grassland Society In Technology Transfer, J. M. Crichton Aug 2023

The Role Of The British Grassland Society In Technology Transfer, J. M. Crichton

IGC Proceedings (1977-2023)

Since its formation in 1945, the British Grassland Society (BGS) has been active in disseminating information to the grassland and associated sectors of agriculture and has adapted to a change from production-based agriculture to its current output mix of private and public goods. The BGS has as its remit: (a) improved production and utilisation of grass and forage crops for the promotion of agriculture and the public benefit, and (b) the advancement of education and research in grass and forage crop production and utilisation, and the publication of results.

Go to article

Optimization Of A Ball's Launch In Sports, Andrew C. Smith, Javier E. Hasbun Aug 2023

Optimization Of A Ball's Launch In Sports, Andrew C. Smith, Javier E. Hasbun

Georgia Journal of Science

Newton's laws are used to study the effects of air resistance on an object's motion. In ball-related sports such as baseball, soccer, etc., understanding the effects of air resistance is essential to optimize ball launch performance. This performance optimization can be studied by identifying the minimal time it takes for a ball with speed to travel a certain distance. We work with two models that apply to an object's motion. One of the models assumes a linear air drag while a second model makes use of a quadratic air drag. We do investigate known differential equations for when the Magnus …

Go to article

All Onboard! An Exploration Of Perceived Organizational Support In Onboarding Best Practices Of Academic Librarians, Patrick J. Raftery Jr, Jeffrey Delgado Aug 2023

All Onboard! An Exploration Of Perceived Organizational Support In Onboarding Best Practices Of Academic Librarians, Patrick J. Raftery Jr, Jeffrey Delgado

Urban Library Journal

This study builds upon previous research of academic librarian onboarding. Current literature has explored how academia differs from other professional occupations, what and how academic librarians wanted/gained from onboarding, and established best practices for ACRL libraries using an organizational socialization model. However, the organizational socialization model used failed to address the role of perceived organizational support (POS). This study attempts to elevate the previous research by investigating the role of POS and organizational socialization in onboarding academic librarians using the City University of New York (CUNY) as its sample population. The researchers requested participants to complete a questionnaire designed to …

Go to article

Students Of Color And Covid-19: Experiences, Coping Strategies, And Supports, Amie S. Kang, Barbora Hoskova, Chung Yu Liu, Arisa Viddayakorn, Molly Binder, Belle Liang, Betty S. Lai Aug 2023

Students Of Color And Covid-19: Experiences, Coping Strategies, And Supports, Amie S. Kang, Barbora Hoskova, Chung Yu Liu, Arisa Viddayakorn, Molly Binder, Belle Liang, Betty S. Lai

Journal of Educational Research and Practice

The coronavirus disease of 2019, known as the COVID-19 pandemic, is a disaster event that posed significant physical, social, financial, and mental health risks to college students. Disproportionate experiences of stressors position students of color as a population particularly vulnerable to the negative impacts of COVID-19, thus, the current study assessed the impact of COVID-19 on undergraduate students of color in the United States. Students participated in semi-structured in-depth interviews about their experiences with stressors during the pandemic. Data were analyzed using conventional content analysis and revealed themes including (a) the pandemic’s impact on students; (b) basic needs as college …

Go to article

High Fiber Dietary Intervention Induces Change In Role Of Faecalibacterium Prausnitzii In Gut Microbiome Ecosystem, Daniel Cyrus Mousavi, Aditya Mishra, Nadim Ajami, Yan Jiang, Tessa M. Kus, Erma Levy, Marco Montalvo, Jennifer Wargo, Carrie Daniel Macdougall, Jennifer Mcquade Aug 2023

High Fiber Dietary Intervention Induces Change In Role Of Faecalibacterium Prausnitzii In Gut Microbiome Ecosystem, Daniel Cyrus Mousavi, Aditya Mishra, Nadim Ajami, Yan Jiang, Tessa M. Kus, Erma Levy, Marco Montalvo, Jennifer Wargo, Carrie Daniel Macdougall, Jennifer Mcquade

Summer Experience 2023

No abstract provided.

Go to article

Psilocybin’S Effects On Neuritogenesis In Cancer Associated Neurons, Josiah M. Miller, Shamima Akhter, Tongxin Xie, Frederico O. Netto, Blake Myers, Sahana Lothumalla, Shajedul Islam, Adewale Adebayo, Moran Amit Aug 2023

Psilocybin’S Effects On Neuritogenesis In Cancer Associated Neurons, Josiah M. Miller, Shamima Akhter, Tongxin Xie, Frederico O. Netto, Blake Myers, Sahana Lothumalla, Shajedul Islam, Adewale Adebayo, Moran Amit

Summer Experience 2023

No abstract provided.

Go to article

Enhancing The Design And Consistency Of An Α-Particle Irradiator For In Vitro Experiments, Benjamin M. Kohler, Marco Tulio Reis, Poliana Marinello, Gabriel Sawakuchi Aug 2023

Enhancing The Design And Consistency Of An Α-Particle Irradiator For In Vitro Experiments, Benjamin M. Kohler, Marco Tulio Reis, Poliana Marinello, Gabriel Sawakuchi

Summer Experience 2023

No abstract provided.

Go to article

Targeting Nociceptive And Cholinergic Nerves In Irradiated Oropharyngeal Cancer Model Reveals Novel Mechanism For Dysphagia, Blake Myers, Shajedul Islam, Frederico O. Netto, Kala Debnath, Snigdha Srivastava, Tongxin Xie, Shamima Akhter, Adewale Adebayo, Josiah M. Miller, Sahana Lothumalla, Hinduja Sathishkumar, Moran Amit Aug 2023

Targeting Nociceptive And Cholinergic Nerves In Irradiated Oropharyngeal Cancer Model Reveals Novel Mechanism For Dysphagia, Blake Myers, Shajedul Islam, Frederico O. Netto, Kala Debnath, Snigdha Srivastava, Tongxin Xie, Shamima Akhter, Adewale Adebayo, Josiah M. Miller, Sahana Lothumalla, Hinduja Sathishkumar, Moran Amit

Summer Experience 2023

No abstract provided.

Go to article

The Synthesis And Characterization Of Gadolinium Alginate Spheres And Potential Uses As A Contrast-Enhancing Anti-Cancer Material, Tyler C. Owens, Marvin Bernardino, Archana Mishra, Allan John Barcena, Isias Workeneh, Erin San Valentin, Marites P. Melancon Aug 2023

The Synthesis And Characterization Of Gadolinium Alginate Spheres And Potential Uses As A Contrast-Enhancing Anti-Cancer Material, Tyler C. Owens, Marvin Bernardino, Archana Mishra, Allan John Barcena, Isias Workeneh, Erin San Valentin, Marites P. Melancon

Summer Experience 2023

No abstract provided.

Go to article

Let's Talk About Death: Use Of Euphemistic Language In The Medical Context, Amanda Quinn, Nico Nortjé, Amitabha Palmer Aug 2023

Let's Talk About Death: Use Of Euphemistic Language In The Medical Context, Amanda Quinn, Nico Nortjé, Amitabha Palmer

Summer Experience 2023

No abstract provided.

Go to article

Non-Coding Rna 886 Predicts Hpv Status And Survival In Oropharyngeal Squamous Cell Carcinoma Patients, Saawan Patel, Guojun Li Aug 2023

Non-Coding Rna 886 Predicts Hpv Status And Survival In Oropharyngeal Squamous Cell Carcinoma Patients, Saawan Patel, Guojun Li

Summer Experience 2023

No abstract provided.

Go to article

Enhancers Activation By Crispr/Cas9-Based Acetyltransferase Rescues Loss Of Function In Crebbp Point Mutant, Sarah S. Luke, Haopeng Yang, Michael R. Green Aug 2023

Enhancers Activation By Crispr/Cas9-Based Acetyltransferase Rescues Loss Of Function In Crebbp Point Mutant, Sarah S. Luke, Haopeng Yang, Michael R. Green

Summer Experience 2023

No abstract provided.

Go to article

First Prev Next Last