The smartphone plays a major role in providing and integrating more features into a single device for the purpose of communication, entertainment, information seeking, e-services, healthcare, and agriculture. As such, it is important to study the influence of smartphones on various contexts. Hence this research looked at the influence of attitude on usage types among smartphone users in Chennai city, Tamil Nadu during October 2017. The study adopted the survey method to get responses from smartphone users. The result of the study indicates that the respondents of the study have a more positive attitude towards smartphones. The smartphone is mostly accessed for social use among the participants. With respect to age group, anxiety and compulsive use are significant and other variables are found to be non-significant. Males have a significant role in a negative attitude towards compulsive and social usage, and females have an important role in a positive attitude towards process and social usage and anxiety towards process usage.

<div class="section abstract"><div class="htmlview paragraph">In an air brake system, compressed air is used as an energy medium for braking applications, ensuring a good seal between the components is critical. The sealing performance of gaskets are significant for the product with joint features as it affects functionality and can cause a breakdown of the entire system; hence, finite element simulation of the sealing performance of gaskets is important for any product development. To simulate fluid interacting with gasket, a fluid-structure interaction (FSI) simulation is necessary by co-simulating a computation fluid dynamics (CFD) and finite element analysis (FEA) solvers to capture complex behavior of seal deformation under dynamic conditions during leakage, but it is a time-consuming process. In this article, the sealing performance of gaskets is studied in detail only till the start of leakage. It is not necessary to simulate the dynamic behavior of the seal beyond leakage to validate the sealing performance; hence, static nonlinear analysis is performed in FEA to capture the seal behavior. But instead of simulating the interaction of fluid as a normal pressure load, a new technique called pressure penetration load is applied. This new technique can not only simulate the normal pressure on the seal and body but also simulate the penetration of fluid through the seal. The intensity of penetration depends on the contact pressure and exists at the interface between the seal and body, due to bolt torque. If the contact pressure is less, the fluid pressure can penetrate and open the contact. This method can predict the possibility of leakage efficiently, and the computation cost is less compared to FSI simulations involving two solvers. The contact pressure developed during the assembly process is simulated and confirmed with the Fuji film test—a pressure-indicating sensor film. Using pressure penetration load, the sealing performance is analyzed to ensure no leakage during extreme conditions. With this methodology, the gasket groove volume, number of bolts, bolt torque, and bolt locations can be optimized. This paper also discusses the sensitivity of various FEA parameters like element size, element type, and dependence of bolt modelling for the current simulation to reduce computation time. This methodology can be applied to validate various products with face-sealing gaskets. A design optimization study is done using this method to convert a metal cover into plastic material with topology optimization to save weight and overall cost of the product.</div></div>

ICT influence in various activities in the family is a periodical topic to study as the technological developments grow day by day. This research attempts to study the influence of ICT in various family activities with special reference to parent and children. 88 families from Chennai city were surveyed and interviewed to find the influence of ICT in usage, purpose, preference, leisure activities, depression time activities, and communication time. Findings found the changes occurred in families and their opinion on ICT usage in a contemporary family structure. It is found that parents and children use the ICT devices in a similar way except for preference of activity. Parents prefer ICT more for entertainment whereas children preference is for education, developing social networks, etc. Except for communication facilitation, family members feel that ICT has changed most of the family activities, but it is considered as modern and acceptable in today's digital world. Family members have both positive and negative opinions regarding ICT usage in their family.

The use of information and communication technologies is increasing in the present scenario to a great extent for various purposes such as education, entertainment, business, e-governance, and so on. When ICT use expanded its origin, it has also predominantly taken a huge place in domestic activities. In the recent decade, the domestication of technologies in home has been expanding and its influence in family activities and family members must be a considerable area to study. Though many scholars from various countries attempted to understand the ICT influence in family life, this chapter adds a contribution to the field by analysing how the different activities in domestic life influences the family dynamics. This research collected the data from two different generation family members such as parents and children. This will help to understand how the ICT use influences the intergeneration family members. It is found that ICT has a desirable influence in family activities. Young adults are highly influenced by parents, and the regular monitoring is expected to avoid harmful effects.

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