AO-PFA is an aspect oriented feature modelling language. This report discusses several theoretical issues regarding the weaving process of AO-PFA. The weaving of aspects is to extract subterms from product family terms in the base specification, and then to replace the extracted subterm (selected join points) by another term (advice). The problem of extracting a subterm from another term is rel...

A weaving drawdown is a rectangular grid of black and white squares with at least one black and one white square in each row and column. A pattern results from vertical and horizontal translations of the defining grid. Any such grid defines a tiling pattern. However, from a weaving point of view, some of these grids define actual fabrics while others correspond to collections of threads that fa...

Stateful aspects is a recent topic in AOSD. As the trigger of a stateful aspect depends on the system execution trace, it needs complicate modeling mechanisms for the pointcuts and weaving operations. We present an approach to weaving stateful aspects using Labelled Transition System (LTS). In the approach, the base system is specified as a LTS. The pointcut is modeled as an extended LTS that o...

Aspect-oriented concepts are currently introduced in early stages of software development to achieve better separation of concerns. However, at the architecture level, there exists no strict model for aspects and their weaving, which makes it difficult for analyzing and reasoning about the semantic problems introduced in the composition of the aspects and the base system. We present a formal mo...

Weaving frames in separable Hilbert spaces have been recently introduced by Bemrose et al. to deal with some problems distributed signal processing and wireless sensor networks. In this paper, we study the notion of excess for woven prove that any two a space are same excess. We also show every frame large class duals is provided its redundant elements small enough norm. Also, try transfer prop...

background: most rural carpet weaving workshops are part of the house and sanitary conditions of the workshop not only affect the weaving but also other family members this study aimed to determine the aerosol and bioaerosols concentration in the rural household carpet weaving workshops in isfahan. methods: in this this study is a cross - sectional study and was performed in 92 rural household ...