688 research outputs found
Is agricultural extension positioned to promote agripreneurship in South Africa?
A shift from agriculture to agribusiness is an essential pathway to revitalise small-scale agriculture in South Africa and to make it more attractive and a profitable venture. The question is whether small-scale farmers can become entrepreneurs and how well is extension positioned to support farmers to foster entrepreneurship? There are two parts to entrepreneurship, the first is the managerial skills required to start and run a profitable farm business. Second is the “entrepreneurial spirit”. Important to realise is that you cannot create an entrepreneur, but you can create the environment that will help them thrive. Governments and donors must invest in institutions and infrastructure that support them. Economic policies and financial incentives must be put in place to inspire a generation of agripreneurs. This paper aims to emphasise the importance that farmers must be linked to markets to take advantage of the opportunities arising along the agribusiness value chain. Successful entrepreneurship requires a strong enabling environment of which political will and leadership is important, but also strong private interest. Extension has a critical role to play in supporting farmers to develop their entrepreneurial skills through training and by providing technical assistance.Keywords: Agripreneurship, Entrepreneurs, Entrepreneurial skills, Enabling environmen
Attributes like attitude and commitment for effective extension
It has become evident that South African Extension, especially in relation to the small-scale farmers has performed poorly. Human motivation is a complicated matter, but in general it has to do with needs, beliefs and attitudes. This paper has adopted a theoretical approach regarding attitude and commitment as inhibiting characteristics of an effective and successful Extension organisation
Enhancing farmers’ organizational and experimentation capacities for soil fertility management in smallholder cropping systems in Vhembe district of Limpopo province in South Africa.
The JOLISAA project analysed a number of multi-stakeholder innovation cases in smallholder agriculture in Benin, Kenya and South Africa through a Collaborative Case Assessment process. The overriding assumption was that a comparative analysis of wide ranging innovation experiences may provide useful insights into the way that innovation processes are triggered and unfold in smallholder agricultural systems. One of the cases investigated in South Africa was from Limpopo Province. This was a project-based innovation processes, initiated to redress how agricultural and social development in rural communities should be addressed through the adoption of the Participatory Extension Approach (PEA). The approach focused on the reorientation of mindsets in Limpopo Department of Agricultural, which were still founded on the teaching of linear transfer of technology models, and where farmers were approached with a believe that extension have all the answers to farmer problems. Participatory Rural Appraisal methodologies were used to interview smallholder farmers and key informants.It was revealed that this was a case of an innovation bundle where the main innovation was an institutional innovation, with the introduction of PEA through the GTZ/BASED program. The aim was to broaden agricultural service and extension delivery to smallholder farmers in the Vhembe district. In the unpacking of the soil fertility management innovation it was revealed that the innovation consists of a number of innovations, which include technical and organisation innovations. The GTZ/BASED program trained some 700 extensionists in the PEA methodology, capacitating them to facilitate technical innovations amongst smallholders in one of four technical areas. A total of 397 villages were eventually served. The extensionists specialising in soil fertility management teamed up with a local university to redress a severe decline in soil fertility in two smallholder irrigation schemes, Rammbuda and Mphaila. Together with farmers they experimented with innovative ways like green manuring with forage legumes. These technical innovation processes created capacity amongst smallholders that triggered spontaneous farmer-initiated experimentation and innovation processes to improve smallholder farming systems and livelihoods. The key challenge identified was that decisive institutional ownership is required to sustain an enabling environment allowing innovation processes to continue beyond the project phase. The key lesson was that project initiated innovations could trigger farmer innovations and that developmental change strategies should explore such opportunities.Key words: Innovation, Soil Fertility, Smallholder Cropping, Participatory ExtensionApproach
Histology in 3D:development of an online interactive student resource on epithelium
Epithelium is an important and highly specialised tissue type that makes up the lining of inner and outer surfaces of the human body. It is proposed that a self-study tool adds to efficient learning and lecturing on this complicated topic in medical curricula. This paper describes the development and evaluation of an online interactive 3D resource on epithelium for undergraduate medical students. A first evaluation was carried out by means of an online survey (n = 37). The resource was evaluated positively on the website in general, its visual contents and its value and potential for the medical curriculum
Psychological impact of lymphoma on adolescents and young adults:Not a matter of black or white
Contains fulltext :
171302.pdf (publisher's version ) (Open Access)PURPOSE: The purpose of the study is to examine differences in perceived impact of cancer (IOC) between adolescents and young adults (AYAs; 18-35 years at cancer diagnosis), adults (36-64 years) and elderly (65-84 years) with a history of (non-)Hodgkin lymphoma. Furthermore, to investigate the association of socio-demographic, clinical and psychological characteristics with IOC; and the association between IOC and health-related quality of life (HRQoL) among AYAs only. METHODS: This study is part of a population-based PROFILES registry survey among lymphoma patients diagnosed between 1999 and 2009. Patients (n = 1.281) were invited to complete the IOCv1 and EORTC-QLQ-C30 questionnaires. Response rate was 67 % (n = 861). RESULTS: AYA lymphoma survivors scored higher on the positive IOC summary scale, compared to adult and elderly patients (p < 0.001), while no significant differences were observed for negative IOC. Among AYAs, females, survivors with a partner, and survivors with elevated psychological distress levels scored significantly higher on the negative IOC summary scale. The negative IOC summary scale was negatively associated with all EORTC QLQ-C30 functioning scales (beta ranging from -0.39 to -0.063; p < 0.05). The positive IOC summary scale was negatively associated with the EORTC QLQ-C30 subscale 'Emotional functioning' (beta = -0.24; p < 0.05). CONCLUSION: AYA, adult and elderly with a history of (non-)Hodgkin lymphoma experienced different types of IOC in terms of positive and negative aspects. IMPLICATIONS FOR CANCER SURVIVORS: Although AYAs experience a more positive IOC compared to older survivors, some AYAs experience more negative IOC and may require developmentally appropriate interventions to address their specific concerns
The Atomic Physics Underlying the Spectroscopic Analysis of Massive Stars and Supernovae
We have developed a radiative transfer code, CMFGEN, which allows us to model
the spectra of massive stars and supernovae. Using CMFGEN we can derive
fundamental parameters such as effective temperatures and surface gravities,
derive abundances, and place constraints on stellar wind properties. The last
of these is important since all massive stars are losing mass via a stellar
wind that is driven from the star by radiation pressure, and this mass loss can
substantially influence the spectral appearance and evolution of the star.
Recently we have extended CMFGEN to allow us to undertake time-dependent
radiative transfer calculations of supernovae. Such calculations will be used
to place constraints on the supernova progenitor, to place constraints on the
supernova explosion and nucleosynthesis, and to derive distances using a
physical approach called the "Expanding Photosphere Method". We describe the
assumptions underlying the code and the atomic processes involved. A crucial
ingredient in the code is the atomic data. For the modeling we require accurate
transition wavelengths, oscillator strengths, photoionization cross-sections,
collision strengths, autoionization rates, and charge exchange rates for
virtually all species up to, and including, cobalt. Presently, the available
atomic data varies substantially in both quantity and quality.Comment: 8 pages, 2 figures, Accepted for publication in Astrophysics & Space
Scienc
Confirming the bidirectional nature of the association between severe hypoglycemic and cardiovascular events in type 2 diabetes: Insights from Exscel
OBJECTIVE We sought to confirm a bidirectional association between severe hypoglycemic events (SHEs) and cardiovascular (CV) event risk and to characterize individuals at dual risk. RESEARCH DESIGN AND METHODS In a post hoc analysis of 14,752 Exenatide Study of Cardiovascular Event Lowering (EXSCEL) participants, we examined time-dependent associations between SHEs and subsequent major adverse cardiac events (CV death, nonfatal myocardial infarction [MI] or stroke), fatal/nonfatal MI, fatal/nonfatal stroke, hospitalization for acute coronary syndrome (hACS), hospitalization for heart failure (hHF), and all-cause mortality (ACM), as well as time-dependent associations between nonfatal CV events and subsequent SHEs. RESULTS SHEs were uncommon and not associated with once-weekly exenatide therapy (hazard ratio 1.13 [95% CI 0.94–1.36], P 5 0.179). In fully adjusted models, SHEs were associated with an increased risk of subsequent ACM (1.83 [1.38–2.42], P < 0.001), CV death (1.60 [1.11–2.30], P 5 0.012), and hHF (2.09 [1.37–3.17], P 5 0.001), while nonfatal MI (2.02 [1.35–3.01], P 5 0.001), nonfatal stroke (2.30 [1.25–4.23], P 5 0.007), hACS (2.00 [1.39–2.90], P < 0.001), and hHF (3.24 [1.98–5.30], P < 0.001) were all associated with a subsequent increased risk of SHEs. The elevated bidirectional time-dependent hazards linking SHEs and a composite of all CV events were approximately constant over time, with those individuals at dual risk showing higher comorbidity scores compared with those without. CONCLUSIONS These findings, showing greater risk of SHEs after CV events as well as greater risk of CV events after SHEs, validate a bidirectional relationship between CV events and SHEs in patients with high comorbidity scores
Reasons to Be Skeptical about Sentience and Pain in Fishes and Aquatic Invertebrates
The welfare of fishes and aquatic invertebrates is important, and several jurisdictions have included these taxa under welfare regulation in recent years. Regulation of welfare requires use of scientifically validated welfare criteria. This is why applying Mertonian skepticism toward claims for sentience and pain in fishes and aquatic invertebrates is scientifically sound and prudent, particularly when those claims are used to justify legislation regulating the welfare of these taxa. Enacting welfare legislation for these taxa without strong scientific evidence is a societal and political choice that risks creating scientific and interpretational problems as well as major policy challenges, including the potential to generate significant unintended consequences. In contrast, a more rigorous science-based approach to the welfare of aquatic organisms that is based on verified, validated and measurable endpoints is more likely to result in “win-win” scenarios that minimize the risk of unintended negative impacts for all stakeholders, including fish and aquatic invertebrates. The authors identify as supporters of animal welfare, and emphasize that this issue is not about choosing between welfare and no welfare for fish and aquatic invertebrates, but rather to ensure that important decisions about their welfare are based on scientifically robust evidence. These ten reasons are delivered in the spirit of organized skepticism to orient legislators, decision makers and the scientific community, and alert them to the need to maintain a high scientific evidential bar for any operational welfare indicators used for aquatic animals, particularly those mandated by legislation. Moving forward, maintaining the highest scientific standards is vitally important, in order to protect not only aquatic animal welfare, but also global food security and the welfare of humans
Health status and psychological outcomes after trauma: A prospective multicenter cohort study
Introduction Survival after trauma has considerably improved. This warrants research on non-fatal outcome. We aimed to identify characteristics associated with both short and long-term health status (HS) after trauma and to describe the recovery patterns of HS and psychological outcomes during 24 months of follow-up. Methods Hospitalized patients with all types of injuries were included. Data were collected at 1 week 1, 3, 6, 12, and 24 months post-trauma. HS was assessed with the EuroQol-5D-3L (EQ-5D3L) and the Health Utilities Index Mark 2 and 3 (HUI2/3). For the screening of symptoms of post-traumatic stress, anxiety and depression, the Impact of Event Scale (IES) and the Hospital Anxiety and Depression Scale (HADS) subscale anxiety (HADSA) and subscale depression (HADSD) were used. Recovery patterns of HS and psychological outcomes were examined with linear mixed model analyses. Results A total of 4,883 patients participated (median age 68 (Interquartile range 53–80); 50% response rate). The mean (Standard Deviation (SD)) pre-injury EQ-5D-3L score was 0.85 (0.23). One week post-trauma, mean (SD) EQ-5D-3L, HUI2 and HUI3 scores were 0.49 (0.32), 0.61 (0.22) and 0.38 (0.31), respectively. These scores significantly improved to 0.77 (0.26), 0.77 (0.21) and 0.62 (0.35), respectively, at 24 months. Most recovery occurred up until 3 months. At long-term follow-up, patients of higher age, with comorbidities, longer hospital stay, lower extremity fracture and spine injury showed lower HS. The mean (SD) scores of the IES, HADSA and HADSD were respectively 14.80 (15.80), 4.92 (3.98) and 5.00 (4.28), respectively, at 1 week post-trauma and slightly improved over 24 months post-trauma to 10.35 (14.72), 4.31 (3.76) and 3.62 (3.87), respectively. Discussion HS and psychological symptoms improved over time and most improvements occurred within 3 months post-trauma. The effects of severity and type of injury faded out over time. Patients frequently reported symptoms of post-traumatic stress. Trial registration ClinicalTrials.gov identifier: NCT02508675
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