We show how two general notions of domain theory, the logic induced from the Scott topology on a domain, together with the Smyth powerdomain, interact with the theory of default reasoning introduced by Reiter 19]. We deene extensions, which are xed points of a certain non-monotonic operator on a Scott domain induced by a normal default set over that domain. We specialize this deenition to the S...

The study analyzed factors that motivate agricultural extension agents in Agricultural Development Programme of Abia State. Primary data were collected from 96 extension agents in Abia State, Nigeria who were selected using multi-stage random sampling technique. Data were analyzed using descriptive statistics, mean score, ordered logit and Spearman rank correlation. It was revealed that 58.3% o...

In Europe, the ongoing renewable expansion and delays in planned grid extension have intensified discussion about an adequate electricity market design. Against this background, we jointly apply agent-based model optimal power flow to investigate long-term impacts of splitting German area into two price zones. Our approach allows capturing investment short-term behavior under imperfect informat...

these days, promotion of farmers' technical-scientific abilities in agriculture is one of the main challenges in this sector. agricultural extension as a motivate power source in agricultural development can be more effective in solving these problems via acceptance of responsibility in the educational concepts. but it faces numerous obstacles because of absence of a proper informational s...

One of the undesirable features in pistachio nuts (Pistacia vera L.) is the incidence of non-split nuts, which affects the price of the final product. In order to attain the kernel inside, the non-split nuts are mostly cracked mechanically. However, this practice may damage the kernel. Akbari variety of pistachio nut was selected to evaluate the influence of different non-mechanical treatments ...

the aim of a multi-mode resource-constrained project scheduling problem (mrcpsp) is to assign resource(s) with the restricted capacity to an execution mode of activities by considering relationship constraints, to achieve pre-determined objective(s). these goals vary with managers or decision makers of any organization who should determine suitable objective(s) considering organization strategi...

Identifying role of extension system in adoption of new technologies have important role to developing favorable extension systems. For supporting sustainable agriculture in Iran needs extension systems to be carefully thought and accurately implemented. The purpose of this is analyzing role of extension activities in adoption of sustainable agriculture. Based on the results the attending agric...

This study examined the training needs of agricultural extension agents in Delta State, Nigeria. A sample of 102 respondents was drawn from extension agents in the States’ Agricultural Development Programme (ADP), Ministry of Agriculture and Natural Resources (MANR) and the FADAMA Programme. Data were collected in February 2017 by using a structured and validated questionnaire. Data generated w...

We provide a new analytical approach to operator splitting for equations of the type ut = Au + B(u) where A is a linear operator and B is quadratic. A particular example is the Korteweg–de Vries (KdV) equation ut−uux +uxxx = 0. We show that the Godunov and Strang splitting methods converge with the expected rates if the initial data are sufficiently regular.