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Speech disorder is one of the most common problems found with autistic children. The purpose of this paper is to investigate the introduction of computer‐based interactive games along with the traditional therapies in order to help improve the speech of autistic children.

From analysis of the works of Ivar Lovaas, it is already known that there are several disadvantages to the “applied behavior analysis” approach to solve the problems of autistic children; so the authors' methodologies were to encourage children with Autism Spectrum Disorders (ASD) to “play,” where playing is mediated through technology. By creating technological methods of interaction (visual displays and physical robots), play and comfortable interactions can be garnered from children with autism. There is a feeling of “safety” in having the main form of interaction occur with non‐humans. Further, these devices allow the child, rather than a third party, to be in control of the interactions.

From the observations, it could found that the problems of autistic children have a wide range and it is almost impossible to design a single game for a group of children. Instead, each child needs to be treated individually. Hence, the authors are suggesting different types of games for different problems.

The authors have proposed some computer game‐based therapies for two types of autism that are discussed in the paper. Interactive games can be built for other types too. After having a group of these games it can be an experimental topic to determine the order of execution of these therapies. However, the proposed games heavily depend on the instructors. Research should be conducted to minimize the duties of instructor.

The autism spectral disorders are defined by the qualitative impairments in social communication. Although the actual reason for autism is still unknown to the medical sciences, it has been proved to be the result of abnormal and irregular growth of cerebral neurons of human brains. People suffering from autism very often demonstrate a poor performance in social interactions and hence find it difficult to communicate with other people. So if vocalization can be encouraged at the age of 3, a pivotal age for children with ASD, this could lead to an increased communicative ability, which makes not only the child's life easier, but also increases their chances of functioning in the world around them.

This paper offers a hierarchy of speaking skills and suggests corresponding games for each stage to achieve a necessary level of efficiency.

The purpose of this study was to optimise the dyeing conditions to achieve right-first-time dyeing in hard water. Owing to the persistent water scarcity for more than two decades now, the textile industry in Pakistan is forced to rely on high-mineral-content ground water for use in textile wet processing. Furthermore, the limited amount of municipal water that is at the disposal of the textile industry is also high in mineral content. Thus, on the large scale, water hardness has become an acute problem for the textile processor. In particular, in the dyeing process, water hardness is known to have crucial effects. However, to-date, no systematic study has been conducted on this aspect of textile dyeing.

In this study, 3² full factorial design was used to optimise the dyeing conditions to achieve right-first-time dyeing in hard water. Thus, cotton fabric was dyed with Red Reactive dye (of dyebath concentration at 5, 10 and 15 g/L) in prepared hard water (of hardness at 10, 40 and 70°dH), respectively. Analysis of variance, coefficient of determination (R²) and p-values for the models were used to evaluate the adequacy of the predictive models. The surface plots of the effects were studied to further examine the interactions of two independent variables. Derringer’s desirability function was used to determine the optimum levels of each variable.

Three levels for both independent variables generate second-order polynomial models to predict the colour strength, lightness, red/green, yellow/blue and total colour difference values of dyed cotton. The obtained predictive models point out the considerable influence of both water hardness and dye concentration on right-first-time dyeing.

Such a finding enabled the dye-mill to produce the correct shade at water hardness of 10°dH and 15 g/L dye concentration, without the need for corrective reprocessing.

Environmental sustainability (ES) is a vital issue in recent times as higher education institutions (HEIs) are expected to have significant environmental impacts. This study aims to explore the ES attitudes in three different HEIs in Bangladesh based on student perception.

Primary data from 200 respondents of 3 HEIs through a questionnaire survey has been collected. The questionnaire was designed to collect data on six criteria: awareness, concern, attitude, willingness to participate and recommendations about campus ES. Pearson's chi-square (χ²), Fisher's exact test statistic, one-way analysis of variance and Spearman's correlation have been used to measure difference and correlation in SPSS.

Though students are aware of ES, only 21% are concerned about the issue. In total, 68% of respondents agreed that campus ES is not a responsibility of authority alone and that others have a role to play; 24% of students do not even know about recycling practices; and 73% of the respondents suggested that knowledge-sharing seminars/conferences could be the best way to improve the campus's ES.

A top-down planning approach excludes students from decision-making and direct engagement in Sustainable Campus building. Including student perceptions in planning assists policymakers and smooths the path to a more sustainable campus.

This study contributes to the existing literature by providing insight into students' perceptions of sustainability practices in the campus environment.