Developing the Spatial Dimension of Farm Business Models

A non-linear mathematical farm business optimisation model, that is set within a spatial economic framework, has been developed. The model incorporates factors such as location, spatial market orientation and technology use, and identifies the business strategy that is optimal in different market and policy environments. Farm household time-use is incorporated centrally within the model, enabling it to examine how on-farm and off-farm activities compete for limited farm household human resources. The model is applied to a beef and sheep farm that can choose between selling livestock to meat processors or processing on-farm and selling direct to consumers. Model simulations reveal when it is optimal for the farm business to innovate in this way and how this decision is affected by changes in key parameters. The farm business model is solved using the GAMS/LINDOGlobal mathematical programming software package. While traditional nonlinear programming and mixed-integer nonlinear programming algorithms are guaranteed to converge only under certain convexity assumptions, GAMS/LINDOGlobal finds guaranteed globally optimal solutions to general nonlinear problems. The model and model results are discussed within the context of theoretical underpinnings, model tractability, and potential applications.Farm Management,

“Waiting for Godot”- Restructuring on Small Family Farms

This paper examines the extent to which favourable off-farm labour market conditions coupled with growth in land values have contributed to the observed resilience of small scale family farms. We use data from Northern Ireland and employ farm household optimisation models to analyse household decision making processes that contribute to the observed inertia in farm structure. The analysis indicates that farm household behaviour is influenced not just by current farm income, but also expected capital asset returns. Increased wealth, associated with continuing land ownership, gives rise to the proposition that the link between off-farm incomes, increased land values and remaining in farming may be associated with farmers pursuing wealth maximizing objectives, whilst still maintaining a rural way of life. Alongside increased wealth through land ownership the farm household model quantifies the importance of off-farm income removing the pressure from farming income to fund all family consumption needs. This enables households to sustain low-income farming activities in order to pursue other objectives such as wealth management (including tax efficient transfer of wealth) and lifestyle. Consequently, the results indicate that the survival of small-scale family farms may be much less sensitive to agricultural support policies than has been commonly suggested. In an extension that explores the effects of the recent economic turbulence due to the ‘credit crunch’ we find that the households remain resilient even when subjected to a protracted period of reduced off-farm employment.Farm households, resilience, wealth accumulation, off-farm income, Consumer/Household Economics, Productivity Analysis, C61, Q12,

Identifying Robust Milk Production Systems

The European dairy industry faces an increasingly uncertain world. There is uncertainty about subsidy payment levels and compliance conditions, global competition, price variability, consumer demand, carbon footprints, water quality, biodiversity, landscapes, animal welfare, food safety, etc. The future is uncertain because it cannot be reliably predicted; therefore the industry must adopt production systems that will be financially robust over a wide range of possible circumstances. Adding to the uncertainty is a lack of consensus regarding the specific characteristics of these sustainable production systems. In this interdisciplinary research project we developed a profit maximizing whole-farm model and employ it to identify robust milk production systems for Northern Ireland under varying market, policy and farm family conditions. The milk production systems incorporated into the model involve variations in date of calving, quantity of concentrate fed, and nature of forage utilized. The model also incorporates a disaggregated specification of time use within farm households and links intra-household resource allocation to the process of agricultural technology adoption. This work illustrates how profit maximizing whole-farm models can play a decision support role in helping farmers, agricultural researchers, agribusiness advisers and agricultural policy makers to identify economically sustainable agricultural production systems.Production Economics,

Assessing the impact of participatory extension programme membership on farm business performance in Northern Ireland.

Publication history: Accepted - 26 September 2021; Published online - 30 September 2021.This paper evaluates the impact of membership of the Business Development Groups (BDG), a participatory extension programme in Northern Ireland on the economic performance of participating farmers for dairy and sheep enterprise groups. The study employs the conditional difference-in-differences approach which combines a non-parametric matching estimator with a difference-in-differences analytical technique to obtain a credible best-estimates of the causal effect of BDG membership on farmers’ economic performance assuming that BDG participation is as good as random after controlling for observable farm characteristics and that the parallel trends assumption holds between BDG participants and non-participants. The results of the analyses showed that membership in the BDG programme has a statistically significant impact on the economic performance of participating farmers. Specifically, the results showed that farmers who are members of the dairy and sheep BDGs increased their gross margin by £109.10 and £17.10 per head respectively compared to farmers that are non-members of the BDGs. The results of the study provide robust evidence to inform policy development around the area of participatory extension programmes. It also supports the design of efficient agricultural education and extension systems that incorporates the ideas of the farmers themselves through peer-to-peer learning thereby maximising the economic and social benefits accruable from such programmes.This research was undertaken as part of the Northern Ireland Department of Agriculture, Environment and Rural Affairs Evidence and Innovation Programme (DAERA E&I 18/1/01)—Impact of RDP: Evaluation of the Rural Development Programme 2014–2020, Farm Business Improvement Scheme-Longitudinal Stud

Supporting physiotherapy learners in practice settings: a mixed methods evaluation of experiences of physiotherapy educators

Background Practice-based education is an essential component of pre-registration physiotherapy programs, and there is a need for a contemporary review of practice-based educational experiences. Purpose The aim of this study was to explore physiotherapy practice educators’ experiences of supporting learners to inform considerations for future workforce development. Methods This was a mixed methods sequential explanatory study based in the United Kingdom (UK). Phase one of the study utilized an online survey disseminated via the Chartered Society of Physiotherapy (CSP) professional networks. Phase two consisted of three semi-structured focus group interviews with participants who expressed an interest via completion of the online survey. All were registered or associate CSP members who actively support practice-based education. Results A total of 208 participants completed the online survey and a sub-set of 15 participated in online focus groups. Quantitative survey data were analyzed using descriptive statistics. Initial thematic analysis of qualitative data from both phases was undertaken by one researcher. Subsequent analyses were carried out independently by the remaining research team, and comparisons were made to agree on codes, categories, and themes. The practice educator is vital in developing the future workforce (30%, n = 61, strongly agree). Identified challenges included supervising more than one learner (34%, n = 67 not at all experienced) and using technology to provide alternative placement models (45%, n = 87 not at all experienced). Conclusion Practice educators need accessible opportunities for professional development. Practice-based education should be embedded as an integral component of all staff roles. A team approach is essential to developing the future physiotherapy workforce

Genome analysis and avirulence gene cloning using a high-density RADseq linkage map of the flax rust fungus, Melampsora lini

Agroinfiltration of avirulence gene constructs. The response of flax cultivars and near-isogenic lines to expression of avirulence gene candidates (AvrM14-A, AvrM14-B and AvrL2-A) using Agrobacterium tumefaciens-mediated transient transformation. (PDF 2637 kb

Isotopic evidence for dominant secondary production of HONO in near-ground wildfire plumes

Nitrous acid (HONO) is an important precursor to hydroxyl radical (OH) that determines atmospheric oxidative capacity and thus impacts climate and air quality. Wildfire is not only a major direct source of HONO, it also results in highly polluted conditions that favor the heterogeneous formation of HONO from nitrogen oxides (NOx= NO + NO2) and nitrate on both ground and particle surfaces. However, these processes remain poorly constrained. To quantitatively constrain the HONO budget under various fire and/or smoke conditions, we combine a unique dataset of field concentrations and isotopic ratios (15N / 14N and 18O / 16O) of NOx and HONO with an isotopic box model. Here we report the first isotopic evidence of secondary HONO production in near-ground wildfire plumes (over a sample integration time of hours) and the subsequent quantification of the relative importance of each pathway to total HONO production. Most importantly, our results reveal that nitrate photolysis plays a minor role (\u3c5 %) in HONO formation in daytime aged smoke, while NO2-to-HONO heterogeneous conversion contributes 85 %–95 % to total HONO production, followed by OH + NO (5 %–15 %). At nighttime, heterogeneous reduction of NO2 catalyzed by redox active species (e.g., iron oxide and/or quinone) is essential (≥ 75 %) for HONO production in addition to surface NO2 hydrolysis. Additionally, the 18O / 16O of HONO is used for the first time to constrain the NO-to-NO2 oxidation branching ratio between ozone and peroxy radicals. Our approach provides a new and critical way to mechanistically constrain atmospheric chemistry and/or air quality models on a diurnal timescale

Supporting physiotherapy learners in practice settings: a mixed methods evaluation of experiences of physiotherapy educators.

Practice-based education is an essential component of pre-registration physiotherapy programs, and there is a need for a contemporary review of practice-based educational experiences. The aim of this study was to explore physiotherapy practice educators' experiences of supporting learners to inform considerations for future workforce development. This was a mixed methods sequential explanatory study based in the United Kingdom (UK). Phase one of the study utilized an online survey disseminated via the Chartered Society of Physiotherapy (CSP) professional networks. Phase two consisted of three semi-structured focus group interviews with participants who expressed an interest via completion of the online survey. All were registered or associate CSP members who actively support practice-based education. A total of 208 participants completed the online survey and a sub-set of 15 participated in online focus groups. Quantitative survey data were analyzed using descriptive statistics. Initial thematic analysis of qualitative data from both phases was undertaken by one researcher. Subsequent analyses were carried out independently by the remaining research team, and comparisons were made to agree on codes, categories, and themes. The practice educator is vital in developing the future workforce (30%,  = 61, strongly agree). Identified challenges included supervising more than one learner (34%,  = 67 not at all experienced) and using technology to provide alternative placement models (45%,  = 87 not at all experienced). Practice educators need accessible opportunities for professional development. Practice-based education should be embedded as an integral component of all staff roles. A team approach is essential to developing the future physiotherapy workforce

Sources, distribution, and acidity of sulfate–ammonium aerosol in the Arctic in winter–spring

We use GEOS-Chem chemical transport model simulations of sulfate–ammonium aerosol data from the NASA ARCTAS and NOAA ARCPAC aircraft campaigns in the North American Arctic in April 2008, together with longer-term data from surface sites, to better understand aerosol sources in the Arctic in winter–spring and the implications for aerosol acidity. Arctic pollution is dominated by transport from mid-latitudes, and we test the relevant ammonia and sulfur dioxide emission inventories in the model by comparison with wet deposition flux data over the source continents. We find that a complicated mix of natural and anthropogenic sources with different vertical signatures is responsible for sulfate concentrations in the Arctic. East Asian pollution influence is weak in winter but becomes important in spring through transport in the free troposphere. European influence is important at all altitudes but never dominant. West Asia (non-Arctic Russia and Kazakhstan) is the largest contributor to Arctic sulfate in surface air in winter, reflecting a southward extension of the Arctic front over that region. Ammonium in Arctic spring mostly originates from anthropogenic sources in East Asia and Europe, with added contribution from boreal fires, resulting in a more neutralized aerosol in the free troposphere than at the surface. The ARCTAS and ARCPAC data indicate a median aerosol neutralization fraction [NH4+]/(2[SO42−] + [NO3−]) of 0.5 mol mol−1 below 2 km and 0.7 mol mol−1 above. We find that East Asian and European aerosol transported to the Arctic is mostly neutralized, whereas West Asian and North American aerosol is highly acidic. Growth of sulfur emissions in West Asia may be responsible for the observed increase in aerosol acidity at Barrow over the past decade. As global sulfur emissions decline over the next decades, increasing aerosol neutralization in the Arctic is expected, potentially accelerating Arctic warming through indirect radiative forcing and feedbacks.Chemistry and Chemical Biolog

Reducing alcohol harms whilst minimising impact on hospitality businesses: ‘Sweetspot’ policy options

Background During COVID-19, hospitality businesses (e.g. bars, restaurants) were closed/restricted whilst off-sales of alcohol increased, with health consequences. Post-covid, governments face lobbying to support such businesses, but many health services remain under pressure. We appraised ‘sweetspot’ policy options: those with potential to benefit public services and health, whilst avoiding or minimising negative impact on the hospitality sector. Methods We conducted rapid non-systematic evidence reviews using index papers, citation searches and team knowledge to summarise the literature relating to four possible ‘sweetspot’ policy areas: pricing interventions (9 systematic reviews (SR); 14 papers/reports); regulation of online sales (1 SR; 1 paper); place-shaping (2 SRs; 18 papers/reports); and violence reduction initiatives (9 SRs; 24 papers/reports); and led two expert workshops (n = 11). Results Interventions that raise the price of cheaper shop-bought alcohol appear promising as ‘sweetspot’ policies; any impact on hospitality is likely small and potentially positive. Restrictions on online sales such as speed or timing of delivery may reduce harm and diversion of consumption from on-trade to home settings. Place-shaping is not well-supported by evidence and experts were sceptical. Reduced late-night trading hours likely reduce violence; evidence of impact on hospitality is scant. Other violence reduction initiatives may modestly reduce harms whilst supporting hospitality, but require resources to deliver multiple measures simultaneously in partnership. Conclusions Available evidence and expert views point to regulation of pricing and online sales as having greatest potential as ‘sweetspot’ alcohol policies, reducing alcohol harm whilst minimising negative impact on hospitality businesses