Coping with drought with innovative pricing systems: the case of two irrigation water management companies in France

In recent years, France has been facing particularly severe drought periods especially in summer. In a country where agriculture is the largest water user, some irrigation management companies have implemented innovative pricing systems to handle this situation. The objective of this article is to analyze the impact of these new management systems on farmers’ incomes, the revenue of the management companies, and the amount of water used. To do that, we develop a methodology using a stochastic model that simulates the representative farmer's optimal behavior in a context of climatic variability. An empirical application is made with a crop growth model and data collected from the Midi‐Pyrenees region. The results show that using these specific nonlinear pricing systems allow irrigation water managers to reduce the impact of drought on production. Moreover, the type of pricing implemented depends on the characteristics and capabilities of the water company. More particularly, these pricing systems can be used to anticipate agricultural water demand in order to avoid imbalance with water availability.     

君度：更多互动，读懂年轻人的生活

君度2009年有三个比较大的改变。第一，2009年4月1日起我们自己来独立经营这一品牌，这是一个大的全球策略的改变，我们与经销商、零售店、酒吧、餐厅的经营者走得更近。另外，我们有了和消费者直接对话的平台，增加了终端的对话机会，对市场洞察或增加活动的灵活性，都是很重要的。     

Public infrastructure,non‐cooperative investments,and endogenous growth

Two countries strategically invest in productive infrastructure within a general equilibrium model with endogenous growth. These public investments generate externalities. Dynamic analysis reveals that: (1) under constant returns, the two countries’ growth rates differ during the transition but are identical on the balanced growth path, (2) a country with decreasing returns can experience sustained growth provided that the other country grows at a positive constant rate, (3) cooperation does not necessarily lead to higher growth for each country, and it can increase or decrease the gap between countries’ growth rates depending on the countries’ consumption preferences regarding domestic and foreign goods.     

Leader–Member Exchange and Relational Quality in a Singapore Public Sector Organization

An objective of Singapore’s ongoing public sector reform (PS21) requires agencies to focus on getting the best out of its employees. One way of doing this is by creating a positive leader–member exchange (LMX) relationship, enabling supervisors to motivate their subordinates towards the development of organizational citizenship behaviours (OCBs). This article reports the extent of LMX and relational quality in a public sector agency experiencing PS21 reform and high staff turnover. In addition, we examined the effects of organizational justice perceptions and job satisfaction towards a subordinates’ OCB. A path model was developed to examine the relationships between LMX, organizational justice, job satisfaction, and OCB and tested by applying LMX theory. The path analysis results showed that LMX mediates the relationship between organizational justice perceptions and OCB. The results also showed that one’s job satisfaction led to higher level of OCB. The study findings have implications for theory and practice which have been presented in the discussion section.     

ARV Treatment and Time Allocation to Household Tasks: Evidence from Kenya

Using longitudinal survey data collected over a period of two years, this paper examines the impact of antiretroviral (ARV) treatment on the time allocated to various household tasks by treated HIV-positive patients and their household members. We study outcomes such as time devoted to housework, firewood and water collection, as well as care-giving and care-seeking. As treatment improves the health and productivity of patients, we find that female patients in particular are able to increase the amount of time they devote to water and firewood collection. This increased productivity of patients coupled with large decreases in the amount of time they spend seeking medical care leads to a reduced burden on children and other household members. We find evidence that boys and girls in treated patients' households devote less time to housework and other chores. These results suggest that the provision of ARV treatment generates a wide variety of benefits to households in resource-poor settings.     

Optimality of impulse harvesting policies

We explore the link between cyclical and smooth resource exploitation. We define an impulse control framework which can generate both cyclical solutions and steady-state solutions. Our model can admit convex and concave profit functions and allows the integration of different stock-dependent profit functions. We show that the strict concavity of the profit function is only a special case of a more general condition, related to submodularity, that ensures the existence of optimal cyclical policies. We then establish a link with the discrete-time models with cyclical solutions by Benhabib and Nishimura (J Econ Theory 35:284–306, 1985) and Dawid and Kopel (J Econ Theory 76:272–297, 1997). For the steady-state solution, we explore the relation to Clark’s (1976) continuous control model.     

Multi-Party Negotiation When Agents Have Subjective Estimates of Bargaining Powers

This paper presents a method for generating Pareto-optimal solutions in multi-party negotiations. In this iterative method, decision makers (DMs) formulate proposals that yield a minimum payoff to their opponents. Each proposal belongs to the efficient frontier, DMs try to adjust to a common one. In this setting, each DM is supposed to have a given bargaining power. More precisely each DM is supposed to have a subjective estimate of the power of the different parties. We study the convergence of the method, and provide examples where there is no possible agreement resulting from it.     

Broiler production in an urban and peri-urban area of Zimbabwe

ABSTRACT

Broiler chicken production is an important livelihood option for urban households in Zimbabwe. A study was carried out to document the technical, demographic and socio-economic parameters characterising the production of broilers in an urban area of Zimbabwe. Findings showed that producers have quite diverse livelihoods and broiler production is not restricted to a survival strategy for the urban poor with no livelihood alternatives, but mostly involved the more privileged. Access to start-up capital and property ownership were pre-requisites for the business. Broiler units were small-scale, informal, backyard businesses dominated by women. Flock sizes averaged 398 (range 25–3500) birds per cycle. However, 79% of the producers kept at most 200 birds per cycle. The mean stocking density was 9.5?birds/m² and reported mortality averaged 7.4%. Respondents have ad hoc marketing arrangements, and face constraints with regard to lack of sectoral support, shortage of capital, prohibitive council by-laws, market access and disease. Poultry production is therefore an important livelihood and business option in the urban and peri-urban area studied.     

Determinants and consequences of financial distress: review of the empirical literature

We synthesise the empirical literature on the determinants and consequences of financial distress, critique the findings and offer suggestions for future research. We categorise these indicators into (i) firm-level fundamental determinants, (ii) macroeconomic determinants and (iii) firm-level corporate governance determinants. We categorise the consequences into (i) financial reporting and auditing consequences, (ii) firm-level operational consequences, (iii) capital market consequences and (iv) corporate governance consequences. We suggest that future research can make a more meaningful contribution, by developing more comprehensive models of predicting financial distress which will entail a departure from the current partial analysis to a more holistic complex analysis.