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The purpose of this study is to propose an extended reliability method for an industrial motor drive by integrating the physics of failure (PoF).

Industrial motor drive systems (IMDS) are currently expected to perform beyond the desired operating conditions to meet the demand. The PoF of the subsystem affects its reliability under such harsh operating circumstances. It is crucial to estimate reliability by integrating PoF, which helps in understanding its impact and to develop a fault-tolerant design, particularly in such an integrated drive system. An integrated PoF extended reliability method for industrial drive system is proposed to address this issue. In research, the numerical failure rate of each component of industrial drive is obtained first with the help of the MIL-HDBK-217 military handbook. Furthermore, the mathematically deduced proposed approach is modeled in the GoldSim Monte Carlo reliability workbench.

From the results, for a 15% rise in integrated PoF, the reliability and availability of the entire IMDS dropped by 23%, resulting in an impact on mean time to failure (MTTF).

The integrated PoF of the motor and motor controller affects industrial drive reliability, which falls to 0.18 with the least MTTF (2.27 years); whose overall reliability of industrial drive drops to 0.06 if it is additionally integrated with communication protocol.

The purpose of this study is to extend a sensitivity-based reliability technique for the processors deployed in industrial drive (ID).

The processor provides flexible operation, re-configurability, and adaptable compatibility in industrial motor drive system. A sensitivity-based model allows a robust tool for validating the system design. Sensitivity is the probability of a partial failure rate for a distributed variable; sensitivity and failure rates are also complementary. Conversely, traditional power electronic components reliability estimating standards have overlooked it, and it is essential to update them to account for the sensitivity parameter. A new sensitivity-based reliability prediction methodology for a typical 32-bit microprocessor operating at 30ºC deployed in ID is presented to fill this gap. The proposed techniques are compared with the estimated processor reliability values obtained from various reliability standards using the validated advanced logistics development tool. The main contribution of this work is to provide a sensitivity extended reliability method over the conventional method directing toward improving reliability, availability, and maintainability in the design of ID.

The analysis shows that the sensitivity of the processor’s circuit increases due to increases in complexity of the system by reducing the overall mean time between failure upon comparing among conventional reliability standards.

The significance of this paper lies in the overall, sensitivity-based reliability technique for processors in comparison to the traditional reliability complexity in IDs.

This paper aims to study the effects of couple stresses and surface roughness on the minimum film thickness of heavily loaded rollers and to discuss these by following Grubin's approach and Crook's approximations.

A generalised form of Reynolds equation for rough surfaces with lubricant as couple stress fluid is derived. This equation is then used to study the combined effect of couple stresses and surface roughness on the roller bearings under heavily loaded conditions. EHD minimum film thickness expressions is obtained by following Grubin's approach and Crook's approximation and it is studied numerically.

It is found that, as the chain length of the additive molecules increases, the elastohydrodynamic minimum film thickness increases. Also, as the mean height of roughness asperities increases, the elastohydrodynamic minimum film thickness increases for the transversal roughness and it decreases in the case of longitudinal roughness.

These effects are studied theoretically by the mathematical equations in heavily loaded roller bearings.

Reduction of the film thickness in the EHD lubrication between the rollers can be compensated by the use of lubricants containing additives of molecules of size. As a result the bearing performance can be improved.

This research paper provides a closed form of the expressions for the bearings in EHD lubrication and is studied with regard to couple stress parameter. This paper helps to manufacture better bearings.

The paper considers integral surfaces of systems of differential equations with impulse perturbations at fixed moments of time. Sufficient conditions have been obtained for the existence of integral surfaces with definite properties and the behaviour of the solutions has been studied with initial conditions outside these surfaces.

India has a marvelous distinction of hosting religious and cultural extravaganzas on an enormous scale, keeping in with its rich lineage and civilizational assortment. The philosophical threads of such festivals are eventually subjective well-being and spiritual awakening. In this context, the authors examine how the visitors' festival motivation culminates in life satisfaction and subjective well-being.

The study follows a theory-driven deductive approach to test the construed relationships. The data were collected from the sites of religious fiesta when the participants were immersed in their cultural fervor. The study uses structural equation modeling to examine the hypothesized model.

The study finds that place attachment and life satisfaction empirically mediate the relationship between festival motivation and subjective well-being. However, the relationship between place attachment and subjective well-being is not empirically strong when life satisfaction mediates their relationship.

The study is based on a convenience sample and is limited to the visitors of local religious festivals. Future research must verify the suitability of the model in other types of festivals of other religions and different locations. Also, this research deliberates on the relationship between only four variables. Future researchers could discuss other variables such as authenticity, emotional solidarity, festival images, festival values, religious faith, etc. to develop a more robust model to explain the relationship between festival motivation and subjective well-being.

In India regardless of social strata, people are religiously conscious and inclined toward attending publicly celebrated religious festivals. The scale of these festivals is significant and given the scenario, the local Government has to join hands with the temple administration, local people and visitors to reap the full benefits of the festival. These temple festivals not only foster coordination and involvement among various stakeholders, but also invoke the devotion of the people to jointly organize the celebrations.

As some of the religious festivals go beyond caste, creed and nationality, the celebrations should evolve as multi-cultural mass events uniting the societal cohesiveness, spirit and national culture. The variables chosen and results found in this study will surely support publicizing the significance of religious festivals in the region and provide an idea to the organizers and supporters to develop new strategies to promote similar events.

The results claim several implications for theory and practice. Theoretically, the study contributes to the literature on religious tourism and event management. Practically, the study discussions indicate the importance of disseminating the significance of religious festivals as a platform for local tourist attractions to generate social, cultural and economic benefits.

The purpose of this paper is to construct a model of hierarchical manpower systems which follow proportionality policies in recruitment and promotion of their staff, ostensibly with a view to safeguard the career interests of their existing employees.

The manpower systems are modeled as Markov systems, and their inherent characteristics and long‐term behavior are studied.

Significantly it is shown that such proportionality systems do not compromise on flexibility in the long term, and can also provide an additional means of controlling the blend of manpower in the system. The theoretical results were tested with real‐world data, and a good degree of conformity was observed between the theoretical predictions and the actually observed behaviour.

The model can also be applied to organizations which outsource a part of their work, the outsource workforce being notionally being considered as recruits to the system.

Outsourcing of work is being practiced on an ever‐increasing scale nowadays, and becoming, at times, even controversial, and as a consequence, an increasing number of organizations are resorting to protectionist policies; the model in this paper provides a theoretical framework in which to view and analyze this phenomenon.

This paper explores the role of institutional objects in the constitution of institutional logics. Institutional objects depend for their objectivity on the goods produced through those objects, such as economic models, passports, or sacred texts. The authors theorize institutional logics as grammars of valuation that institutionalize goods through institutional objects. The authors identify four value moments through which goods are objectified: institution, the instituting of a good, a belief and an imagination of its objective goodness; production, how the good is produced, what practices are productive of the good; evaluation, how good is the good, the practices and objects through which worth in terms of that good is determined, and territorialization, the domain of reference of the good, to what objects and practices a good can and does refer in its instantiations. The authors assess the adequacy of our model through an institutional object based on the good of “market value” – i.e., an options pricing model. The authors discuss the implications of these findings for institutional logical theory and the sociology of valuation.

Aarhus Kommunes Biblioteker (Teknisk Bibliotek), Ingerslevs Plads 7, Aarhus, Denmark. Representative: V. NEDERGAARD PEDERSEN (Librarian).

The purpose of this paper is to emphasise mangrove reforestation as a countermeasure for climate change mitigation and adaptation in the Godavari Delta in India.

Restoration of the mangrove forest in the Godavari Delta near Kakinada town in the south‐eastern Indian state of Andhra Pradesh is carried out with participatory involvement of local communities depending for their livelihood on the mangrove forest. The extent of habitat restoration through reforestation in this area is explored. The possible contribution of restored mangroves in minimising the impacts of sea‐level rise due to climate change is highlighted. Reforestation information from 1999 to 2006 is collected from available published work and the Forest Department of the Government of Andhra Pradesh.

The positive result of reforestation since the past few years is seen as an increase in mangrove vegetation. The changing landscape due to restoration could stop erosion and salt water incursion up to some extent and help in maintaining the biodiversity of this place.

A long‐term monitoring with ethnobiological study is required for managing such projects in future.

The Godavari Delta mangroves are rich in biodiversity and offer a wide range of ecological services. Adding to habitat degradation, predicted sea‐level rise is likely to affect the local human communities. The role of mangroves as an economically viable barrier against sea‐level rise has been recognised in other Asian countries. The results from this case study too could be disseminated to various stakeholders involved in sustainable development. The focus of the paper on India is particularly relevant, as the country is going to be integral in climate change debates.