an efficient and green method for the synthesis of pyrano[3,2-c]chromene or pyrano[4,3-b]pyrone derivatives is described by using a three-component condensation process of malononitrile, aldehyde, and 4-hydroxycoumarine or 4-hydroxypyrone in [bmim]bf4-licl as an ionic liquid.

to perform an accurate approach to the spine specially for fracture stabilization a 3d model of spine surgical region may improve this mechanism and it can help the surgeon to have a deeper glance to this scenario. the pre-op planning facility is another advantage of the patient spine specific model to take a chance of making guides to direct pedicle screws safely and increase the pathomechanic...

This paper introduces a new process for a rigorous component-centered development of trustworthy systems. The rationale for our perspective of the process is two-fold. The activities prescribed in a conventional software engineering development process are neither suitable nor sufficient for developing component-based systems. Component-based development methods that are currently practised do ...

State of the art in robot software development mostly relies on class library reuse and only to a limited extent to component-based design. In the BRICS project we have defined a software development process that is based on the two most recent and promising approaches to software reuse, i.e. Software Product Line (SPL) and Model-Driven Engineering (MDE). The aim of this paper is to illustrate ...

The proposed patterns presented in this paper describe a sequence of steps for the Distributed Component Development integrating different known principles to support the process. The involved principles are: part of Catalysis method used as a Component-Based Development (CBD) method to define, specify and design the distributed components; the middleware to support components distribution and ...

Component-based development (CBD) is a name, with which software development professionals are quite familiar. There are several models which have been proposed for CBD in last few years. They contain good features but there are some improvement possibilities in them. The objective of this paper is to propose a process for CBD and to evaluate the effects of quality parameters on reusability. Th...

Domain Engineering (DE) and Component-based Development (CBD) are approaches that focus on reuse. On the one hand, DE methods emphasize variability modeling in analysis phase. On the other hand, most CBD methods gude on the development of components, with a minor focus on reusability properties. This paper presents an approach to support variability modeling, in a Component-based Domain Enginee...