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231.
The changing agricultural sector and the challenges faced by smallholders call for the need for farm mechanisation suited to smallholder farming. Conventional four-wheeled tractors (4WTs) are not feasible for many smallholders owing to their high capital costs, unsuitability for fragmented holdings as well as topography and slope. More appropriate technologies are needed such as two-wheeled tractors (2WTs) and their requisite accessories. Our findings show that opportunities exist for the introduction of 2WTs in maize based systems through service provider models combining a number of operations that can be offered throughout the year and targeted to niche areas where 4WT access is unlikely. The paper also suggests that attention needs to be given concurrently to development of the 2WT supply chain to ensure that its profitability is sustainable. 相似文献
232.
Ian Lambie Lisa Hickling Fred Seymour Les Simmonds Marlyn Robson Chanel Houlahan 《Journal of Sexual Aggression》2013,19(2):99-117
Abstract This article describes a follow-up study of 14 adolescent sexual offenders who had attended a community treatment programme. A core component of their treatment included outdoor wilderness group therapy. Interviews were conducted with adolescents and parents and tapped several areas including social skills and peer relationships, victim empathy, cognitive distortions, safety plans and coping with high risk situations, sexual offending cycle, perceived level of risk, intimacy and sexuality. The study also examined the child protection service records of the It adolescents. Data from child protection service computer records showed that none of the adolescents had reoffended. Interviews with adolescents and families focusing particularly on the wilderness component of the programme showed positive changes. 相似文献
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Byron E. Greenberg Matt Riggs Fred B. Bryant Bryan D. Smith 《Journal of Police and Criminal Psychology》2003,18(2):12-19
This study cross-validates a short aggression inventory using a sample of 250 law enforcement professionals. The instrument
under investigation is the 12-question modified version of the Buss-Perry Aggression Scale (Buss & Perry, 1992). Statistical
and external validation methods were used to ascertain the appropriateness of this scale's use with law enforcement professionals.
Confirmatory factor analyses revealed that both the firstorder, four-factor model, {ie12-1}, GFI=.94, NFI=.84, NNFI=.88, and
CFI=.91, and the second-order model with a single, global Aggression “super” factor, {ie12-2}, GFI=.94, NFI=.84, NNFI=.89,
and CFI=.91, provided a reasonable goodness-of-fit to the data. Subscales of this instrument correlated meaningfully with
departmental measures of citizen complaints for physical and verbal aggression by officers, as well as the number of shooting
incidents in which the officers were involved. The need for a short measure of aggression is discussed and applications in
law enforcement are offered. 相似文献
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We survey the pioneering contributions of Robert Tollison to the theory and practice of antitrust law enforcement. Inspired by his period of service during Ronald Reagan’s first administration as Director of the Federal Trade Commission’s Bureau of Economics, Tollison was the first scholar to apply public choice reasoning to the question why antitrust frequently fails to achieve its stated goal of protecting consumers against unwarranted exercises of market power. In supplying evidence that the outcomes of antitrust processes are shaped more by special interests than by the public’s interest, he was instrumental in launching a wholly new research program. 相似文献
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Recently, there has been considerable excitement about the economic potential of the “developmental network state”—decentralized
government policies that successfully accelerated growth in several high- and medium-income countries. The question remains
whether such a strategy could be successful in less-developed nations whose scientific and technological resources were relatively
limited. This paper analyzes the trajectory of Chile, a Southern country which, despite adverse conditions, managed to produce
something akin to an economic miracle during the last few decades. Our argument is that Chile’s success was based on the developmental
network state strategy. Moreover, we highlight the centrality to understanding the Chilean experience of the concept of “network
failures”—a common phenomenon that occurs when domestic production would be best served by network forms of organization but
for a variety of reasons, these networks either fail to materialize or fail to take hold (Schrank and Whitford 2011). Over and over again, we see that the logic behind the actions of the Chilean state was to provide resources that reduced
the likelihood of network failures. We examine three case studies of successful export sectors: salmon; wine; and fruit and
vegetables. The paper outlines some of the challenges faced by the Chilean model and assesses its long-term viability. 相似文献