In [9] oriented quantum algebras were motivated and introduced in a very natural categorical setting within the context of knots and links, some examples were discussed and a rudimentary theory of oriented quantum algebras was sketched. Invariants of knots and links can be computed from oriented quantum algebras. Here we continue the study of oriented quantum algebras. We view them from a more ...

Object-oriented database systems generally tend to impose a single, structural view on users. This paper proposes a new mechanism, called view class, which realizes various views for object-oriented databases. The view class, created by query primitives and additional methods, enables information hiding as well as the ability to provide a join view or a group view. In addition to the language f...

To present a framework for compassionate teaching, the views of teachers and students on the topic were sought. These informants were chosen from among their corresponding populations in Tehran, using the snowball and mixed methods. Semi-structured interviews were used to gather the needed data. To analyze the data open coding and descriptive categorization were utilized. Results show that from...

This research aims to investigate the contributions of KARDS (knowing, analyzing, recognizing, doing, and seeing) to Iranian English as a foreign language (EFL) institute teachers’ professional identity reconstruction. The researchers employed purposive sampling to choose twenty teachers. A KARDS questionnaire (Hassani, Khatib, & Yazdani Moghaddam, 2019a, 2019b) was used to classify the teacher...

Several techniques exist to select and materialize a proper set of data in a suitable structure that manage the queries submitted to the online analytical processing systems. These techniques are called view management techniques, which consist of three research areas: 1) view selection to materialize, 2) query processing and rewriting using the materialized views, and 3) maintaining materializ...

abstract creating suitable classrooms that can meet the educational needs of mentally-retarded students is vitally important. the present study explores the effect of three physical characteristics of classroom environment on the creativity of educable mentally-retarded children: window view, window size, and classroom size. the participants, one hundred 9-to-11-year-old girl students, took the...

A view mechanism can help handle the complex semantics in emerging application areas such as image databases. This paper presents the view mechanism we deened for the DISIMA image database system. Since DISIMA is being developed on top of an object-oriented database system, we rst propose a powerful object-oriented view mechanism based on the separation between types (interface functions) and c...

A view mechanism can help handle the complex semantics in emerging application areas such as image databases. This paper presents the view mechanism we deened for the DISIMA image database system. Since DISIMA is being developed on top of an object-oriented database system, we rst propose a powerful object-oriented view mechanism based on the separation between types (interface functions) and c...

The Model/View/Controller (MVC) paradigm, and its many variants, is a cornerstone of decoupling within object-oriented design. MVC leads to clear reuse benefits regarding the class hierarchies for the model and view elements. In practice, however, the controllers appear to defy reuse, most likely because they encapsulate specialized business logic. Within an effective product line, however, suc...