Littérature scientifique sur le sujet « Graphical languages »

We present a graphical review of the research on visual languages in the last 20 years. In particular, we gathered and analyzed the data about a set of publications in the field from 1995 to 2014. Visual techniques employed include graph-based visualization such as collaboration, co-citation, and co-word networks. We also adopted geographical views, alluvial diagrams, and timelined charts. The produced charts allowed us to have a deeper knowledge on the field of visual languages and on the scientific community working on it.

Perspective geometry is a fundamental, challenging, and captivating subject within the engineering bachelor's degree program. It holds significant importance in developing graphic skills, analytical abilities, sketching proficiency, and comprehension of drawings. Moreover, it plays a crucial role in organizing the architectural components of a bachelor's thesis. However, the teaching and learning of perspective geometry often reveal various difficulties and shortcomings. Moreover, one of the various systems of symbols and languages created by global cultures is the graphical language, which is an exceptional and unparalleled language for understanding scientific and technical information. This language is considered the oldest international language. Every visual piece of information in various processes of human life has been formed through the graphical language, which is composed of various geometric shapes. In this research, data has been gathered from the perspectives of first-year students from the 2013 batch regarding the difficulties encountered in perspective geometry. A questionnaire was distributed to collect their opinions, and three graphical tasks with different levels of complexity were given to the students. The results obtained from this study indicate that employing suitable teaching methods and providing adequate resources can alleviate most of the learning difficulties associated with graphic skills. Instructors also play a pivotal role in resolving learning obstacles. Therefore, efforts should be made to enhance the quality of teaching graphic subjects by updating the content and curriculum of educational programs and improving teaching methods through the use of technology. In higher education institutions, conditions for fostering students' professional knowledge, enhancing their ability to draw maps and create technical documents can be facilitated through computer graphics education. Updating the teaching methods plays a crucial role in improving the quality of graphic education. The mentioned factors provide a suitable environment for the growth of graphic knowledge and the implementation of projects related to professional subjects.

The importance of software continues to grow for all areas of scientific research, no less for powder diffraction. Knowing how to program a computer is a basic and useful skill for scientists. This paper explains the three approaches for programming languages and why scripting languages are preferred for non-expert programmers. The Python-scripting language is extremely efficient for science and its use by scientists is growing. Python is also one of the easiest languages to learn. The language is introduced, as well as a few of the many add-on packages available that extend its capabilities, for example, for numerical computations, scientific graphics, and graphical user interface programming. Resources for learning Python are also provided.

The specification of join point selections (also known as "pointcuts") is a major design issue in Aspect-Oriented Software Development. Aspect-oriented systems generally provide specific language constructs (subsumed by the term "pointcut language") for specifying such a join point selection. Pointcut languages differ widely with respect to their syntax and semantics. Consequently, developers familiar with one specific language can hardly benefit from this knowledge when designing and implementing pointcuts in another language. This implies that developers working with different aspect-oriented languages can hardly communicate their design to each other, and knowledge about aspect-oriented design can hardly be transferred among developers developing in different languages. In order to overcome this problem, we present novel specification means based on the UML to represent diverse ways of join point selections — without relying on language-specific syntax and semantics. Instead, the proposed language constructs are able to express join point selections in a variety of different aspect-oriented programming languages.