during past decades, increased wastewater production by human activities intensified the problem of wastewater usewithout causing undesirable impacts on the environment and human life. however, practice of wastewater use inirrigation crops and green spaces needs careful control because of the potential presence of unwanted constituents such asheavy metals and organic contaminants. this research...

decolorization of aqueous solutions containing ionic dyes (reactive blue 19 and acid black 172) by a tfc commercial polyamide nanofilter (nf) in a spiral wound configuration was studied. the effect of operating parameters including feed concentration (60-180 mg/l), pressure (0.5-1.1 mpa) and ph (6-10) on dye removal efficiency was evaluated. the response surface method (rsm) was utilized for th...

As the marketplace becomes increasingly competitive greater attention is being given to software reuse and object-oriented paradigms. This paper presents an overview of the objectoriented reuse arena. It should serve as a pointer to research within the OO-reuse area in which the reader has a specific interest. It discusses what OO-reuse is, its different forms, problems with reuse and solutions...

We investigate the current extent of term reuse and overlap among biomedical ontologies. We use the corpus of biomedical ontologies stored in the BioPortal repository, and analyze three types of reuse constructs: (a) explicit term reuse, (b) xref reuse, and (c) Concept Unique Identifier (CUI) reuse. While there is a term label similarity of approximately 14.4% of the total terms, we observed th...

We propose a methodology for the reuse of contextualized learning content. The current reuse methodology requires context independent learning content and introduces a reuse paradox: "the most reusable objects are context-independent, while the best instruction is highly contextualized". We identify two aspects of contextualization: specialisation on the educational context the content is creat...

ABSTRACT Due to the specific approach to reuse in product line engineering, this approach brings a specific point of view to reuse economics. As a consequence some established assumptions and abstractions of reuse economics that are valid in most opportunistic approaches to reuse must be revisited. The list of issues ranges from the basic estimation models used as input to reuse economics model...

Reuse of software components can improve software quality and productivity significantly. This paper mainly concentrates on our approach to reuse assessment, which is a process of identifying and assessing the characteristics of a reusable component based on a set of well-defined reuse guidelines. This paper also proposes a scheme for measuring reuse potential. These techniques have been succes...

Software reuse is commonly used to leverage existing assets and to reduce development cost and time. Reuse can be accomplished by several different mechanisms. This paper describes these mechanisms and proposes a classification framework for them. The framework has two dimensions: retest scope⎯how the reuse impacts the need for testing⎯and binding time⎯when the reuse is realized. By examining t...

Theories of knowledge reuse posit two distinct processes: reuse for replication and reuse for innovation. We identify another distinct process, reuse for customization. Reuse for customization is a process in which designers manipulate the parameters of metamodels to produce models that fulfill their personal needs. We test hypotheses about reuse for customization in Thingiverse, a community of...

Applying reuse-supporting techniques has the potential for increasing software productivity, shortening development time and decreasing maintenance costs. However, at present, there is no methodology incorporating reuse as a standard development practice and the question of which factors affect reuse, their level of significance and assessment is still a controversial issue. Code reuse, on the ...