Abstract The way from the path integral to Feynman diagrams is sketched. emphasis put on decrease of complexity in this process, infinite-dimensional integrals down apparent simplicity child’s play. On other hand, also subsequent increase when using make realistic physical predictions described, thus illustrating dialectic between and clarity diagrams, their practical applications.

We study alternating strand diagrams on the disk with an orbifold point. These are quotients by rotation of Postnikov disk, and we call them diagrams. associate a quiver potential to each diagram, in such way that its Jacobian algebra one associated covering diagram related skew-group construction. moreover realise this as endomorphism certain explicit cluster-tilting object. This is similar (a...

This work presents a method that bridges the gap between requirements elicitation and conceptual, interaction and navigation design for Web applications. This method is based on user scenarios, use cases, and a new graphical notation, called User Interaction Diagrams. From these specifications, it is shown how to derive a conceptual model, and then how to derive the navigational structure of a ...

Effective design of middleware-based systems requires modeling notations that allow the use of process-interaction schemes provided by different middleware packages directly in designs. Traditional design notations typically only support a fixed class of interprocess interaction schemes, and designers wishing to use them for modeling middleware-based systems must devote significant effort to en...

This paper introduces INblobs, a visual editor and interpreter for interaction nets that is presently being developed at Minho. The editor is based on Blobs, a front-end for drawing and editing graph diagrams written with wxHaskell. The tool fills a gap in the community, since all the existing tools for interaction nets take as input textual descriptions of nets. INblobs includes a visual edito...

The emerging technology complex event processing can be utilized to integrate complex events into business processes and to flexibly adjust processes on changing business requirements. Due to the complexity of events to be modelled, a high interaction level between users and developers is required. The lack of appropriate approaches for modelling complex events with the common conceptual modell...

We define three semantic models for actor computation starting with a generalization to open systems of Clinger’s event diagram model, and forming two abstractions: interaction diagrams and interaction paths. An algebra is defined on each semantic domain with operations for parallel composition, hiding of internal actors, and renaming. We use these models to provide semantics for descriptions o...

The “Unified Modeling Language” (UML [1]) is generally accepted as the de facto standard notation for the analysis and design of object-oriented software systems. It provides diagrams for the description of static, dynamic, and architectural aspects of systems at different levels of detail. In particular, dynamic aspects of system behavior can be specified with the help of interaction (i.e., co...

chickpea (cicer arietinum l.) is one of the most important crops worldwide that is a subject of many plant breeding programs in many countries. in addition, climates are changing all over the world and drought becomes one of the most serious problems versus yield of crops. in order to screen drought tolerant genotype in chickpea, twenty genotypes were tested under rainfed and irrigated conditio...