Addressing gender norms in Ethiopia’s wheat sector

Poster prepared for a share fair, Addis Ababa, May 201

Yersinia ruckeri challenge on rainbow trout fed different diet types

A challenge for sustainable rainbow trout production is an increasing use of plant sources in fish feed due to shortage of marine protein and oil sources. Diets with high plant content are known to cause enteritis and injury to the intestine, which will affect the absorption of nutrients, affecting the overall health status and welfare of the fish. The result is a higher risk of disease following exposure to pathogenic microorganisms. The aim of this study was to elucidate how different feed types with varying amounts of marine versus organic plant protein and oil sources affected the survival of rainbow trout in connection with an infection. Enteric redmouth disease caused by Yersinia ruckeri is an economically important disease which causes problems in rainbow trout. Experimental infections (intraperitoneal injection of 150-200 g fish fed the different diets over a two month period) were done and mortalities in the different diet groups were recorded. Two weeks post challenge the mortalities in the different groups were between 50 and 89 %. The mortalities were lowest in the group fed the diet where half of the fish oil was replaced by organic plant oil. Unfortunately, the results were blurred due to a natural infection with Y. ruckeri that had occurred in the diet groups two months prior to the experimental infection (mortalities between 2 and 9 % in the different groups), and the half fish oil half plant oil group had had the highest cumulative mortality percentage in connection with this natural infection

The Dynamics of an Open Access: The case of the Baltic Sea Cod Fishery - A Strategic Approach -

The paper sets up a discrete-time, deterministic model of a single industry, in the light of the benchmark theory of Smith (1968). The model is used to de-scribe the dynamics of recovery from a replenishable resource such as the case of the eastern Baltic Cod fishery. The model advances from Smith’s (1968) theory since it includes a biological function dividing the change in the biomass into growth occurring during the year and recruits entering the spawning stock biomass and a dynamic entry/exit function applying a slightly more technical production function than the Schaefer production function. Theoretical possible types of steady state are discussed before the theory is applied to the eastern Baltic Sea cod fishery. The path the fishery has been following since 1982 is determined and it is discussed how it relates to the optimal path to steady state. The paper further throws light on questions as; Are we able to understand the dynamic behavior of fishermen in this fishery? Does a stable equilibrium exits and how is the path to this equilibrium described? When a fishery is regarded outside safe biological limits, could it be on the path to a positive steady state?

The Dynamics of an Open-access Fishery: Baltic Sea Cod

This paper sets up a dynamic open-access model of a single industry exploiting a single resource stock. The model is applied empirically to describe the dynamics of the eastern Baltic Sea cod fishery. The theoretical model is based on the benchmark papers by Smith (1968, 1969). Types of steady state are discussed theoretically and the theory is applied to the eastern Baltic Sea cod fishery. The empirical path the fishery has been following since 1982 is determined and how it relates to the optimal path to steady state is discussed. Comparisons are made to other empirical studies, and the stability of the steady state is evaluated. The paper concludes that the Baltic Sea cod stock likely is on a path to a stable steady state, and it might not be a problem that the stock is below safe biological limits.Baltic sea cod, bio-economics, dynamic entry/exit, fisheries, open-access, stability of steady state, Resource /Energy Economics and Policy, Q21, Q22,

Aspects of the Russo-Japanese War

On 6 February 1998 a symposium was held in STICERD on Aspects of the Russo-Japanese War at which two papers were presented: 'The Japanese Military during the Russo-Japanese War, 1904-05: A Reconsideration of Command Politics and Public Images', by Dr Lone, and 'British Observers of the Russo-Japanese War', by Dr Towle.

Suppression of ac Stark shift scattering rate due to non-Markovian behavior

The ac Stark shift in the presence of spontaneous decay is typically considered to induce an effective dephasing with a scattering rate equal to $\Gamma_s |\Omega|^2/\Delta^2$, where $\Gamma_s$ is the spontaneous decay rate, $\Omega$ is the laser transition coupling, and $\Delta$ is the detuning. We show that under realistic circumstances this dephasing rate may be strongly modifed due to non-Markovian behavior. The non-Markovian behavior arises due to an effective modification of the light-atom coupling in the presence of the ac Stark shift laser. An analytical formula for the non-Markovian ac Stark shift induced dephasing is derived. We obtain that for narrow laser linewidths the effective dephasing rate is suppressed by a factor of $Q^2$, where $Q$ is the quality factor of the laser.Comment: Accepted in PRA Rapid Communication

Enhancing the gender-responsiveness of your project's technical farmer training events

This resource sets out simple suggestions for ensuring that women as well as men feel included in training events, are fully informed about technological options, learn effectively, and have the confidence to implement what they have learned. Over time, if their experience has been successful, they should be able to build on the training course to innovate by themselves in response to their needs and changes in the wider environment

Emotional robots: principles and practice with PARO in Denmark, Germany and the UK

As societies age there will be a significant increase of those over 80 and a predicted increase in people with dementia. We know that loneliness increases with old age, and those living with dementia are at risk of social isolation. Also opportunities for sensory stimulation and engagement in pleasurable activities are reduced in old age. The question is what technologies can be used to extend the range of available interventions that can enhance well-being. Emotional robots have been developed for activity and therapeutic purposes. This article explores experiences of the emotional robot PARO in Denmark, Germany and UK, and provides principles of this robot as an activity or activity with a therapeutic purpose