Executable models allow precise description of software systems at a higher level of abstraction and independently of a platform or a programming language. In this paper we explore the use of a Procedural Action Language based on OCL to specify executable UML components and we propose an extension that will include array types and correspond-

Convergent extension movements occur ubiquitously in animal development. This special type of cell movement is controlled by the Wnt/planar cell polarity (PCP) pathway. Here we show that Xenopus paraxial protocadherin (XPAPC) functionally interacts with the Wnt/PCP pathway in the control of convergence and extension (CE) movements in Xenopus laevis. XPAPC functions as a signalling molecule that...

The study assessed farmers’ perception of effectiveness of agricultural extension agents in Anambra State, Nigeria. The population of the study comprised all contact farmers and extension agents in Anambra State. Multi-stage, purposive and simple random sampling techniques were used to select 200 respondents comprising 160 farmers and 40 extension agents. Data for the study were collected throu...

Compartmentalised extension prohibits the uptake of new technology thereby inhibiting agricultural growth. Extension services aimed at increased agricultural growth should have a market-led and evidence-based pluralistic advisory system that is coordinated by the government’s Agricultural and Technical Services division in response to the needs of farmers. This study sought to assess extension ...

Visually guided, goal-directed reaching requires encoding action distance and direction from attributes of visual landmarks. We identified a cognitive mechanism that seemingly performs visual motor extension before action initiation and replicated and extended previous results that identified a mechanism for visual motor mental rotation. We find that humans systematically delay action onset whi...

In this work, we consider each normal alkane as a hypothetical mixtureof methyland methylene groups, in which the interaction potential of each pair is assumed to be the average effective pair potential. Then, the LIR equation of state (EOS) is extended for such a hypothetical mixture. Also, three basic compounds, namely, propane, n-butane and cyclohexane, are used to obtain the contributio...

The study determined the willingness and capacity of poultry farmers to pay for extension services in Nasarawa State, Nigeria. At this research used a sample size of 120 poultry farmers. Simple descriptive statistics, Kuppuswamy scale and Logit regression model were used data analysis. The results showed that majority of the poultry farmers (87.5%) indicated their willingness to pay for extensi...

The aim of the present study was to produce lactoferrin (L) and chitosan (C) nanoparticles by ionic cross-linking with TPP thereby increase antimicrobial activity biopolymers. were synthesized in different proportions biopolymers characterized regarding their size, zeta potential, morphology, chemical interactions, structural characteristics, antibacterial activity. They also applied as coating...