Search results

The purpose of this paper is to evaluate the impact of access to production credit on the productivity of smallholder farmers.

Data for the study were drawn from the Agricultural Value Chain Facility (AVCF), which was implemented in the Northern Region of Ghana. This paper uses the Propensity Score Matching (PSM) to estimate the average treatment effect of access to production credit on the productivity of smallholder farmers. The rationale for the choice of this estimation technique is to control for selection bias since the treatment variable (access to production credit) was not randomised. The authors also test for the effect of hidden bias using “Rosenbaum bounds” sensitivity analysis. The study uses two control groups to examine the net effect of credit on productivity.

The results reveal that smallholder farmers with access to production credit increased productivity through investment in farm inputs. For the impact of credit on productivity using control Group 1, the result shows that farmers with access to credit increased their productivity by 0.170 metric tonnes per hectare and for control Group 2, the result shows an increase of 0.252 metric tonnes per hectare more than farmers who are without access to production credit.

The evidence as provided by this paper is that access to production credit is significant to meet the credit needs of smallholder farmers and therefore contributes to the policy debate on whether access to credit has impact on the productivity of smallholder farmers.

The paper shows the importance of production credit in augmenting the production function of smallholder farmers.

Traditional agency theory assumes monitoring is good for the principal, but we investigate an unintended effect: diminishment of the agent’s preference for honesty. We hypothesize greater dishonest behavior in a monitored environment than in a non-monitored environment, when the agent has the opportunity to cheat outside the scope of monitoring. Relevant theories to explain such behavior are behavioral agency theory, where trust and reciprocity are thought to alter contractual outcomes, and the fraud-triangle theory, where the ability to rationalize deviant acts affects behavior. We utilize participants who have been acclimated to either a monitored or an unmonitored condition in an immediately preceding experiment and seamlessly continue that treatment. Within each of these conditions, participants perform a simple task with a performance-based monetary reward. Half self-report and can safely cheat, while the other half are verified; the difference between verified and self-reported scores is a proxy for dishonest reporting. As hypothesized, unmonitored individuals reciprocate with honest behavior, while monitored individuals tend toward dishonest behavior when the opportunity arises. Implications for fraud prevention are discussed.

This article features the achievements of women through four picture book biographies, all of which are National Council for the Social Studies Notable Trade Books for 2011. These notable trade book selections underscore the contributions of four distinct ethnicities, symbolizing the cultural diversity of our nation and its citizens. They draw attention to women who accomplished great things, yet remain unknown and invisible in the historical record. The contributions of these women are highlighted, and developmentally appropriate extension activities are shared to help teachers encourage children to learn more about the lives of women who changed our nation not only during Women’s History Month, but throughout the year. Finally, this article discusses tips for engaging both girls and boys in the study of women’s history.

Computer‐based systems for motor function rehabilitation have been around for more than a decade, with work done to help recovery of function in the lower limb (ankle, leg) as well as upper limb (hand and arm).

More recently there has been a trend towards the use of game‐based systems to deliver rehabilitation goals. The authors' interdisciplinary group has been working in the area of motor function recovery of the hand and arm (following stroke) for a number of years, using both high‐end virtual reality (VR) technology as well as low‐cost video capture technology.

Over this time it has become clear that there are many challenges in designing usable, effective game‐based systems for motor function rehabilitation.

This paper reflects on user experiences across the range of technologies developed by the group. It presents a summary review of the authors' systems and details the protocols and user evaluation instruments used. It then critically reflects on this work and reviews other recent advances in game usability and playability, leading to suggestions for how the user experience of games for rehabilitation may be improved in future work.

Active computer gaming (ACG) is a way for older people to participate in strength and balance exercise. Involving older adults in the development of a bespoke ACG system may optimise its usability and acceptability. The purpose of this paper is to employ user-centred design to develop an ACG system to deliver strength and balance exercises, and to explore its safety, usability and acceptability in older adults.

This paper describes user involvement from an early stage, and its influence on the development of the system to deliver strength and balance exercise suitable for display on a flat screen or using an Oculus Rift virtual reality (VR) headset. It describes user testing of this ACG system in older adults.

Service users were involved at two points in the development process. Their feedback was used to modify the ACG system prior to user testing of a prototype of the ACG system by n=9 older adults. Results indicated the safety, usability and acceptability of the system, with a strong preference for the screen display.

The sample size for user testing was small; however, it is considered to have provided sufficient information to inform the further development of the system.

Findings from user testing were used to modify the ACG system. This paper identified that future research could explore the influence of repeated use on the usability and acceptability of ACG in older adults.

There is limited information on the usability and acceptability VR headsets in this population.

Purpose – This paper investigates competitive bank behaviour in Africa for the period 1999–2008 and further examines the impact of institutional quality and political atmosphere on competitive bank behaviour.

Design/methodology/approach – This study used panel data methodology based on the Panzar–Rosse (1987) design.

Findings – The findings of the study indicates that the nature of banking system in Africa can best be described as monopolistically competitive. Also, our findings endorse the importance of institutional quality and political stability in fostering competitive banking sector. In particular, the rule of law shows positive and significant relationship with competitive bank behaviour. Additionally, the quality of regulations suggests positive association with bank competitive behaviour. With respect to political environment, stable political atmosphere is conducive for promoting competitive banking sector. Improved regulatory quality coupled with reduced level of perception about corruption fosters competitive bank behaviour.

Originality/value – This paper provides useful information relevant to policy makers in the banking sector about the nature of bank competitive behaviour in Africa and the drivers behind the competitive behaviour.

This research paper aims to investigate reinforced concrete (RC) walls' behaviour under fire and identify the thermal and mechanical factors that affect their performance.

A three-dimensional (3D) finite element (FE) model is developed to predict the response of RC walls under fire and is validated through experimental tests on RC wall specimens subjected to fire conditions. The numerical model incorporates temperature-dependent properties of the constituent materials. Moreover, the validated model was used in a parametric study to inspect the effect of the fire scenario, reinforcement concrete cover, reinforcement ratio and configuration, and wall thickness on the thermal and structural behaviour of the walls subjected to fire.

The developed 3D FE model successfully predicted the response of experimentally tested RC walls under fire conditions. Results showed that the fire resistance of the walls was highly compromised under hydrocarbon fire. In addition, the minimum wall thickness specified by EC2 may not be sufficient to achieve the desired fire resistance under considered fire scenarios.

There is limited research on the performance of RC walls exposed to fire scenarios. The study contributed to the current state-of-the-art research on the behaviour of RC walls of different concrete types exposed to fire loading, and it also identified the factors affecting the fire resistance of RC walls. This guides the consideration and optimisation of design parameters to improve RC walls performance in the event of a fire.