Search results

This paper aims to investigate the effect of CaF₂ (calcium fluoride) addition as a solid lubricant on the friction and wear behaviour of sintered Fe-Cu-C materials under different loads.

In this study, the effects of CaF₂ added in varying weight percentages on the friction-wear properties of Fe-2Cu-0.8C alloys are investigated. Five Fe-2Cu-0.8C-based compositions comprising CaF₂ in 0, 3, 6, 9 and 12 Wt.% were prepared using the single-stage compaction and sintering technique. Friction coefficient, wear loss, hardness and compressive strength of the specimens were measured. The worn-out surfaces were analysed using a scanning electron microscope. Friction and wear tests were carried out on pin-on-disc machine under dry sliding conditions at room temperature.

The alloy with 3 Wt.% CaF₂ was found to be useful in improving wear and friction properties, whereas higher contents of CaF₂ resulted in increased wear and friction. Apart from enhanced tribological properties, a slight decrease in the compressive strength was also observed in the 3-Wt.%-CaF₂-added sample. Adhesion and abrasion were the prominent wear types observed during this study.

A new self-lubricating composite is developed where CaF₂ is used as a solid lubricant in a Fe-Cu-C-based matrix. CaF₂, being a high-temperature lubricant, is tried and tested for friction and wear at room temperature, and the results show that the addition of CaF₂ in Fe-Cu-C improved its friction and wear properties. Thus, the developed material can be used for antifriction applications.

Augmented reality (AR) integrates the digital world with the real world and thus, provides a real-time experience to the users. With AR, the immediate surroundings become a learning platform for the users. The perception of the products has been enhanced many times with AR; thus, enriching user experience and responsiveness. The purpose of this paper is to bring forth the basics of AR and provide an overview of the research work carried out by researchers in the implementation of AR in different sectors.

This paper summarizes the usefulness of AR in different industries. The authors have identified the peer-reviewed research publications from Web of Science, Scopus, Google Scholar, etc. The selection of literature has been made based upon the significance of AR in recent times. The industries/sectors where AR has been implemented successfully have been considered for this paper. The paper has been divided into various sections and subsections to bring more clarity to the readers.

This paper presents a brief and a precise information on Industry 4.0 and AR. The basic working of AR system and its implications have also been discussed. The preference of AR over virtual reality (VR) has also been deliberated in this paper. The authors have presented the usefulness of AR in different sectors such as smart factories, ship yard building, online shopping, surgery and education. This paper discusses the AR-ready procedures being followed in these sectors.

AR has been an add-on to VR systems. The processes in industries have become very handy and informative with AR. Because the application of AR in different sectors has not been discussed in a single paper; thus, this work presents a systematic literature review on the applications of AR in different sectors/industries.

The purpose of this paper is to identify the musculoskeletal problems faced by the workers carrying out head lifting at the construction sites and to present a solution for the identified problems.

The methodology of the paper is framed in two phases. First, the identification of the problems faced by workers through interviews/questionnaire and second, designing and fabricating a mechanical system to safe guard workers against musculoskeletal disorders.

Based upon the interviews and questionnaires, it was ascertained that majority of the workers were subjected to neck pain and low back pain. This was mainly attributed to the lifting of heavy loads on head, sudden and jerky movements and bad postures.

The developed frame has been appreciated by the Physiotherapists also; however, it still has certain limitations which can be taken as a future scope for the further modification of the frame. The limitations are as follows: the weight of the frame is a limitation, as the worker has to bear this load in addition to the load which is to be lifted. However, this can be dealt with by replacing the material of the frame with lightweight materials such as aluminium alloys, carbon fibres, etc. The continuous wearing of the frame may result in discomfort, as the worker cannot freely roam around. Sweating and etching due to wearing of belt. Worker cannot place the load him/herself on the frame. Stability issues in lifting liquids overhead.

Findings revealed the bleak possibility of replacing head loading. However, there is an urgent need of developing a cost-effective system which could help workers while carrying out head lifting of loads.

This work presents an ergonomically designed mechanical frame which will help workers in carrying out head loading without effecting their skull, spine, etc. The system was tested on workers and the results were alarming and the working capacity of the workers was observed to increase with the fabricated frame.

The development of new communication technology such as 5G is now a solid choice for Industry 4.0. 5G in the fifth generation replaces the presently used mobile telecommunications networks. In every sector of modern life, this technology is designed to resolve the issue of the enormous rise in daily gadgets. 5G allows rapid data transfer and significantly improves the Internet of Things (IoT), which contains billions of devices. The purpose of this paper is to study the potential applications of 5G for Industry 4.0.

Relevant research publications from Scopus, Web of Science and Google Scholar were identified to accomplish the objectives of this paper. 5G for Industry 4.0 enables crucial communications such as wireless management of machines and robotics to unleash Industry 4.0’s full potential, including the considerable proliferation of IoT devices in 5G. This technology enhances quality control, increasing inspections that rely on real-time analysis for rapid and early detection.

In Industry 4.0, 5G technology provides high speed and flexibility connectivity which helps to enhance the entire manufacturing system. This paper briefs about 5G and different network technologies used in 5G. Advancements, associated features and specialties, and significant enablers of 5G for Industry 4.0 are discussed. Finally, the paper identifies and discusses eighteen 5G applications for Industry 4.0. 5 G-enabled robots are used in manufacturing to carry out extensive work to enhance connectivity.

5G is the next-generation communication technology, allowing numerous examples of inventive usage, including Industry 4.0. In line with its long-term vision of digitisation, 5G benefit the whole value chain, including consumers and businesses.

The subject area is strategy and business.

The case can be used for MBA students. This is equally effective in short courses meant for low-to-mid-level working executives. The case is suited for classes in strategy, general marketing, media management and family business courses.

Dainik Jagran – a vernacular daily – is the most read newspaper in India. Under the banner of Jagran Prakashan Ltd.; which is one of the leading media houses in India, the success of Dainik Jagran has been an outcome of the strategic marketing decisions taken by its founder and his successors in the post-independence era. With extensive circulation, it created a large readership base and took bold decisions to launch multi editions to its daily through a series of acquisitions, mergers and consolidations from 1975 to 2010, enabling it to step into product diversification. Readership surveys, investments in technology, advertising, regular branding events and smart phone applications are a few tools that helped. While the group has diversified into other industries, there is an underlying anxiety about the future prospects of its newspaper business. With the onslaught of online news dailies, will Dainik Jagran be able to expand and maintain its readership base using its previous business and marketing strategies? Or is it time to change strategies for businesses in the newspaper and allied media industry in India?

The study has the following outcomes: application of value chain concept in businesses serving two-sided markets; application of environmental analysis, Porter’s five forces analysis and related strategy concepts; and learning to critically approach and develop a sustainable growth strategy framework for a successful family-run newspaper business in India.

Teaching notes are available for educators only. Please contact your library to gain login details or email support@emeraldinsight.com to request teaching notes.

CSS 11: Strategy.

The purpose of this paper is to present and solve the problem of adaptive beamforming (ABF) for a uniform linear array (ULA) as an optimization problem. ABF mainly concerns with estimation of weights of antenna array so as to direct the major lobe in the direction of desired user and nulls in the direction of interfering signals with reduced side lobe level (SLL).

The potential of gravitational search algorithm is explored to optimize multi-objective fitness function for ABF using MATLAB software.

The performance of the algorithm has been compared by considering different number of interference signals at different power levels. The proposed algorithm presents good convergence rate and accurate steering of main lobe and nulls with reduced SLL compared to the well-known ABF technique, namely, minimum variance distortionless response (MVDR) and previously reported results. The simulation results are presented in tabular form.

The present work is limited to simulation. The researchers are encouraged to solve the problem of ABF using the proposed approach in hardware.

The application of proposed algorithm is to optimize multi-objective function for ABF with reduced SLL in linear antenna arrays.

This case describes the experience of Kanpur Confectioneries Private Limited (KCPL), a family managed company, in being a contract manufacturer for A–One Confectioneries Private Limited. The alliance had worked to the advantage of KCPL. It had prospered as a profitable contract manufacturer. It had used the surplus to diversify into unrelated businesses. The family members, however had doubts regarding the employment opportunities provided by the move. They were not sure whether the progress was sustainable. Alok Kumar Gupta, Chairman and Managing Director of KCPL, along with his brothers and son, is required to review the strategy and performance of his company and develop a course of action for the future.

In the last 10 years, India has amended its laws dealing with sexual offences against women with the changes ranging from increasing terms of imprisonment for the offence of rape to state-funded compensation schemes for women and child victims. In this regard, challenges persist for the agencies of the criminal justice system in India especially the courts to realise the vision of restorative justice as these forums have to navigate the relevant statutory provisions and binding precedents. This chapter seeks to analyse the challenges faced by courts in proper reintegration of victims and offenders of sexual offences, the institutional responses of the courts and suggests reforms to the criminal justice system in India in consonance with the principles of restorative justice acknowledged in the restorative justice movement in the international discourse.

This paper aims to understand the social work curriculum as perceived by the learners of the master’s degree programme. The study compares the perception as held by students’ originating from the same and different faculties regarding the curricular aspects of social work education in India.

The study uses a qualitative approach. It is a case study-based paper whereby the participants were selected using multi-phase sampling, universities were selected using purposive sampling and 106 students were selected using quota sampling. Semi-structured online interviews were taken using an interview guide and transcribed. Inter-coder reliability was tested using Cohen’s kappa. The paper used grounded theory to analyse data.

The study suggests a significant difference in the perception of curriculum between those originating from the same discipline and other faculty. It was found that the learners perceive the curriculum to be obsolete in addressing contemporary concerns and needs serious reframing.

As the study uses the case study method, it has been limited to four universities of Madhya Pradesh state of India to analyse the cases effectively. Further, only the domain of social work has been explored in the study. Thus, the results may lack generalizability. Further studies can also be conducted to test the propositions suggested. Even similar studies can be carried out with other disciplines. Also, the study being cross-sectional leaves scope for future comparative and longitudinal studies.

The paper presents some interesting perceptions of the student community, which can be used for redesigning and revising the social work curriculum. Such appraisals if done by every educational institute can bring significant reforms in the present education system of India and make it at par with the global standards and responsive to the contemporary needs of the society. Further, with such training, social workers can be true change agents.

The study can play a significant role in the redesigning of social work education in India. Thus, directly or indirectly benefit the entire society.

The paper addresses the concern to include the current student community in curriculum design to ensure quality curriculum.