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1 – 10 of over 2000
Article
Publication date: 2 January 2018

Mukta Kulkarni, K.V. Gopakumar and Shivani Patel

Organizations are increasingly investing in disability-specific sensitization workshops. Yet, there is limited understanding about their hoped outcomes, that is, increased…

1327

Abstract

Purpose

Organizations are increasingly investing in disability-specific sensitization workshops. Yet, there is limited understanding about their hoped outcomes, that is, increased knowledge about disability-related issues and behavioral changes with respect to those with a disability. The purpose of this paper is to examine the effectiveness and boundaries of disability-specific sensitization training in organizations.

Design/methodology/approach

This is an interview-based study where 33 employees from five industries across India were interviewed over the span of a year.

Findings

The findings suggest that sensitization workshops are successful with regard to awareness generation. Paradoxically, the same awareness also reinforced group boundaries through “othering.” Further, workshops resonated more so with individuals who already had some prior experience with disability, implying that voluntary sensitization is likely attracting those who have the least need of such sensitization. The findings also suggest that non-mandated interventions may not necessarily influence organizational level outcomes, especially if workshops are conducted in isolation from a broader organizational culture of inclusion.

Originality/value

The present study helps outline effects of sensitization training initiatives and enhances our understanding about how negative attitudes toward persons with a disability can be overcome. The study also indicates how such training initiatives may inadvertently lead to “othering.” Finally, this study offers suggestions to human resource managers for designing impactful disability sensitization workshops.

Details

Employee Relations, vol. 40 no. 1
Type: Research Article
ISSN: 0142-5455

Keywords

Article
Publication date: 2 March 2012

Amit Bakshi and S.V. Kulkarni

The purpose of this paper is to give a comprehensive description of various safety factors that need to be determined while assessing the short‐circuit strength of transformers.

Abstract

Purpose

The purpose of this paper is to give a comprehensive description of various safety factors that need to be determined while assessing the short‐circuit strength of transformers.

Design/methodology/approach

Factors of safety are divided into two categories: radial and axial. Some of the latest approaches in assessing the strength are elaborated.

Findings

Six major sets of calculations are identified: three each for radial and axial electromagnetic forces. Corresponding factors of safety are defined and calculated for practical transformers. These factors are related to the strength and stability aspects of windings.

Research limitations/implications

The work gives pointers for further research at appropriate places while highlighting the challenges involved in the assessment of the short‐circuit strength.

Practical implications

The presented overview of the factors of safety can be a useful guide for the practicing transformer engineers.

Originality/value

The main contribution of the reported work is in highlighting the intricacies associated with the subject of short‐circuit strength of power transformers. It can serve as a reference document for future research works in the area since the procedures are outlined for calculating the factors of safety through six case studies.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 31 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 3 February 2023

Arad Azizi, Fatemeh Hejripour, Jacob A. Goodman, Piyush A. Kulkarni, Xiaobo Chen, Guangwen Zhou and Scott N. Schiffres

AlSi10Mg alloy is commonly used in laser powder bed fusion due to its printability, relatively high thermal conductivity, low density and good mechanical properties. However, the…

Abstract

Purpose

AlSi10Mg alloy is commonly used in laser powder bed fusion due to its printability, relatively high thermal conductivity, low density and good mechanical properties. However, the thermal conductivity of as-built materials as a function of processing (energy density, laser power, laser scanning speed, support structure) and build orientation, are not well explored in the literature. This study aims to elucidate the relationship between processing, microstructure, and thermal conductivity.

Design/methodology/approach

The thermal conductivity of laser powder bed fusion (L-PBF) AlSi10Mg samples are investigated by the flash diffusivity and frequency domain thermoreflectance (FDTR) techniques. Thermal conductivities are linked to the microstructure of L-PBF AlSi10Mg, which changes with processing conditions. The through-plane exceeded the in-plane thermal conductivity for all energy densities. A co-located thermal conductivity map by frequency domain thermoreflectance (FDTR) and crystallographic grain orientation map by electron backscattered diffraction (EBSD) was used to investigate the effect of microstructure on thermal conductivity.

Findings

The highest through-plane thermal conductivity (136 ± 2 W/m-K) was achieved at 59 J/mm3 and exceeded the values reported previously. The in-plane thermal conductivity peaked at 117 ± 2 W/m-K at 50 J/mm3. The trend of thermal conductivity reducing with energy density at similar porosity was primarily due to the reduced grain size producing more Al-Si interfaces that pose thermal resistance. At these interfaces, thermal energy must convert from electrons in the aluminum to phonons in the silicon. The co-located thermal conductivity and crystallographic grain orientation maps confirmed that larger colonies of columnar grains have higher thermal conductivity compared to smaller columnar grains.

Practical implications

The thermal properties of AlSi10Mg are crucial to heat transfer applications including additively manufactured heatsinks, cold plates, vapor chambers, heat pipes, enclosures and heat exchangers. Additionally, thermal-based nondestructive testing methods require these properties for applications such as defect detection and simulation of L-PBF processes. Industrial standards for L-PBF processes and components can use the data for thermal applications.

Originality/value

To the best of the authors’ knowledge, this paper is the first to make coupled thermal conductivity maps that were matched to microstructure for L-PBF AlSi10Mg aluminum alloy. This was achieved by a unique in-house thermal conductivity mapping setup and relating the data to local SEM EBSD maps. This provides the first conclusive proof that larger grain sizes can achieve higher thermal conductivity for this processing method and material system. This study also shows that control of the solidification can result in higher thermal conductivity. It was also the first to find that the build substrate (with or without support) has a large effect on thermal conductivity.

Article
Publication date: 4 November 2013

Vikas V. Gite, Ashok B. Chaudhari, Ravindra Dattatraya Kulkarni and Dilip G. Hundiwale

The primary purpose of this work is to prepare the renewable source-based polyurethanes coatings which can be used to substitute petroleum-based materials. In the secondary…

Abstract

Purpose

The primary purpose of this work is to prepare the renewable source-based polyurethanes coatings which can be used to substitute petroleum-based materials. In the secondary purpose, the paper included improvement in the properties of said PU coatings using modified nano TiO2 for industrial PU coatings.

Design/methodology/approach

The authors have synthesised low molecular weight polyols (monoglycerides) based on vegetable oils such as castor, linseed, coconut, mustard, sunflower and rice bran oils. These monoglycerides were successfully utilised in the preparation of polyurethane coatings. In order to improve the performance of these coatings, modified nano TiO2 was incorporated into them. The particle size of TiO2 was determined by transmission electron microscopy. Coatings prepared were characterised for their properties such as gloss, scratch resistance, impact resistance, flexibility, cross cut adhesion and chemical resistance. The thermal stability of coatings was also studied by thermo gravimetric analyzer.

Findings

The polyurethane coatings prepared from six monoglycerides of different oils with polymeric diphenyl methane diisocyanate showed good chemical resistance and thermal stability. Coating properties like impact resistance, flexibility and adhesion were excellent for all of the prepared samples of PU coatings. PU coatings with excellent hardness up to 5B were found with the modification of nano TiO2 by silane coupling agent. The authors successfully prepared the renewable source-based (monoglycerides of oil) PU coatings.

Practical implications

Practically the authors are able to convert renewable source that is vegetable oils into polyurethane coatings which may have strong potential to be used as industrial surface coating. The properties of the PU coatings were evaluated before and after the incorporation of different concentration of surface-modified nano TiO2 which revealed that the presence of 1 percent nano TiO2 showed significant enhancement in coating properties.

Originality/value

The beauty of this work includes synthesis of polyurethanes coatings from renewable source material (monoglycerides of vegetable oils) to substitute petroleum-based materials. The incorporation of silane-modified TiO2 nanoparticles in renewable source-based PU coatings is another originality of the work. This article is also representing comparative study of various vegetable oils on PU coatings.

Details

Pigment & Resin Technology, vol. 42 no. 6
Type: Research Article
ISSN: 0369-9420

Keywords

Book part
Publication date: 19 June 2019

Michael Schandorf

Abstract

Details

Communication as Gesture
Type: Book
ISBN: 978-1-78756-515-9

Book part
Publication date: 19 August 2021

Kristine M. Kuhn, Jeroen Meijerink and Anne Keegan

This work examines the intersection between traditional human resource management and the novel employment arrangements of the expanding gig economy. While there is a substantial…

Abstract

This work examines the intersection between traditional human resource management and the novel employment arrangements of the expanding gig economy. While there is a substantial multidisciplinary literature on the digital platform labor phenomenon, it has been largely centered on the experiences of gig workers. As digital labor platforms continue to grow and specialize, more managers, executives, and human resource practitioners will need to make decisions about whether and how to utilize gig workers. Here the authors explore and interrogate the unique features of human resource management (HRM) activities in the context of digital labor platforms. The authors discuss challenges and opportunities regarding (1) HRM in organizations that outsource labor needs to external labor platforms, (2) HRM functions within digital labor platform firms, and (3) HRM policies and practices for organizations that develop their own spin-off digital labor platform. To foster a more nuanced understanding of work in the gig economy, the authors identify common themes across these contexts, highlight knowledge gaps, offer recommendations for future research, and outline pathways for collecting empirical data on HRM in the gig economy.

Details

Research in Personnel and Human Resources Management
Type: Book
ISBN: 978-1-80117-430-5

Keywords

Article
Publication date: 27 July 2012

Karina Puebla, Karina Arcaute, Rolando Quintana and Ryan B. Wicker

The purpose of this paper is to investigate the effects of aging, pre‐conditioning, and build orientation on the mechanical properties of test samples fabricated using…

2148

Abstract

Purpose

The purpose of this paper is to investigate the effects of aging, pre‐conditioning, and build orientation on the mechanical properties of test samples fabricated using stereolithography (SL) and a commercially available resin.

Design/methodology/approach

American Society for Testing and Materials (ASTM) Standard D638 Type I specimens were manufactured in a Viper si2 SL system using WaterShed™ 11120 resin. The specimens were manufactured in two different build setups, designed to fit batches of 18 or 24 specimens with different build orientations. The specimens were randomly tested in tension, and a design of experiments (DOE) was used to determine the effect of aging (4, 30 or 120 days), pre‐conditioning (ambient, desiccant, or ASTM recommended conditioning), and build orientation (flat, on an edge, or vertical) on the ultimate tensile stress (UTS) and elastic modulus (E) of SL fabricated samples. Additionally, the fractured samples were imaged using scanning electron microscopy (SEM) to characterize the fractured surfaces.

Findings

Results showed that aging, pre‐conditioning, and build orientation each had an effect on the mechanical properties of the SL samples. In general, the samples aged at the shortest time frame (4 days) and the samples preconditioned according to ASTM recommendations had the lowest values of UTS. Regarding the effect of build orientation, the specimens built flat (with layers oriented along the thickness of the sample) had the lowest UTS and E values and the mechanical properties were statistically different from those built vertically or on an edge. The specimens built in the vertical orientation (with layers oriented along the length of the sample) had the highest values of UTS and E, yet the mechanical properties of the samples built on an edge (with layers oriented along the width of the sample) were not statistically different from the samples built vertically. SEM images of the fractured specimens showed fracture surfaces typical of polymers with a mirror zone and changes in surface texture from smooth to coarse.

Research limitations/implications

The research was limited to a single commercially available resin. Through a statistical DOE approach, statistically significant differences in mechanical properties of SL fabricated samples were found as functions of aging, pre‐conditioning, and build orientation. These results can assist the ASTM F42 Committee with developing test standards specific to SL and the additive manufacturing community.

Originality/value

The statistical analyses presented here can help identify and classify the effects of fabrication, storage, and conditioning parameters on mechanical properties for SL fabricated parts. Understanding how the mechanical properties of SL resins are affected by different parameters can help improve the use of SL for a variety of applications including direct manufacturing of end‐use products.

Details

Rapid Prototyping Journal, vol. 18 no. 5
Type: Research Article
ISSN: 1355-2546

Keywords

Book part
Publication date: 6 July 2012

Sarah Opitz-Stapleton and Karen MacClune

Hydrological and climatological modeling is increasingly being used with the intent of supporting community-based climate change adaptation (CCA) and disaster risk reduction (DRR…

Abstract

Hydrological and climatological modeling is increasingly being used with the intent of supporting community-based climate change adaptation (CCA) and disaster risk reduction (DRR) initiatives in the Hindu Kush-Himalaya (HKH), as well as filling critical data gaps in a region that contributes significantly to the water resources and ecosystem diversity of Asia. As the case studies presented in the previous chapters illustrate, the utility of modeling in informing and supporting CCA and DRR initiatives depends on a number of criteria, including:•appropriate model selection;•ability to interpret models to local contexts; and•community engagement that incorporates and addresses underlying vulnerabilities within the community.

There are significant challenges to meeting all three of these criteria. However, when these criteria are met, we find:•There is a clear role for modeling to support CCA. The climate is changing now and will continue to do so for several centuries, even if carbon emissions were to stabilize tomorrow. Models, and other scenario development tools, provide our best insight into what the future climate might be and resulting impacts on dynamic social, environmental, political, and economic systems.•There is a clear role for local CCA. The impacts of climate change will be felt mostly at local levels, necessitating community adaptation responses. At the same time, most of the HKH communities and countries engaged in CCA initiatives have pressing, immediate development and livelihood needs. Making current development and livelihood initiatives incorporate climate adaptation considerations is the best way to ensure that the choices made today can set us on paths of increasing resilience, rather than almost inevitable disaster, for the future.•To achieve the best of both modeling and CCA requires thoughtful and patient application of modeling, tailored to local needs, conditions, and politics, with communities engaged around all stages of generating, interpreting, and applying the results. This requires a rare combination of technical skill, cultural sensitivity, political awareness, and above all, the time to continually engage with and build relationships within the community in order to foster resilient change.

Details

Climate Change Modeling For Local Adaptation In The Hindu Kush-Himalayan Region
Type: Book
ISBN: 978-1-78052-487-0

Keywords

Book part
Publication date: 24 May 2022

Pradeep Kumar Choudhury and Angrej Singh Gill

Purpose: Although the transnational mobility of youth is prevalent across the globe, the policies and strategies used by developing countries to promote youths’ transnational

Abstract

Purpose: Although the transnational mobility of youth is prevalent across the globe, the policies and strategies used by developing countries to promote youths’ transnational mobility remains unclear. This chapter aims to discuss a few emerging trends and concerns related to youth transnational mobility and human capital accumulation. It focuses on the specific case of youth transnational migration from India. As such, this chapter considers the factors that have led to the construction of aspirations for transnational migration among Indian youth.

Study approach: In this chapter, we examine youth transnational mobility by synthesising the major literature available in the area of globalisation and transnational migration in the developing countries context. The study also incorporates the policy debates and secondary data evidence in these domains to substantiate the arguments.

Findings: Mainly focussing on the internal state of affairs of India, this work highlights three critical issues (a) new norms and practices of human capital accumulation within India’s knowledge economy; (b) understanding state and formal-informal ‘commoditised’ market dynamics in the changing aspirations for global human capital formation, specifically through transnational migration; and (c) examining the upshots of youth transnational mobility in terms of the production of relatively new forms of caste and class inequalities within Indian society.

Originality: This conceptual piece of work is an initial foray to unpack the complexities of Indian youths’ migration for specialised forms of human capital accumulation in a global landscape. The study motivates future policy-oriented interdisciplinary research on education and transnational mobility, specifically in empirical research projects.

Details

Children and Youths' Migration in a Global Landscape
Type: Book
ISBN: 978-1-80117-539-5

Keywords

Book part
Publication date: 23 August 2023

Raji Ajwani-Ramchandani and Sonali Bhattacharya

COVID-19 not only has impacted adversely the health infrastructure, taking away lives of millions of people but it has also crippled the economy. The worst effected were food…

Abstract

Purpose

COVID-19 not only has impacted adversely the health infrastructure, taking away lives of millions of people but it has also crippled the economy. The worst effected were food supply chain due to restrictions imposed on operations of shops and retail outlets. The consumers were suffering due to lack of supply. Similarly, agriculture produce were getting wasted due to lack of cold storage.

Methodology

In this case we have proposed how a mobile-based application solution during COVID lockdown can successfully transform the livelihood of rural farmers in the state of Maharashtra (India), a state worst affected by the pandemic.

Result

The technology-integrated supply chain model jointly developed by financial institutions, self-help groups (SHGs) and NGOs has enabled direct selling of fresh produces by rural women farmers to urban large residential societies at their doorsteps. It has provided a solution of municipality waste management by converting the waste to compost, getting them collected and used in the farmlands.

Implications

It will help the urban consumers to have the continuous supply of fresh vegetables and fruits available at their doorsteps, and keep a track of transport of foods from farm to fork. The farmers will be able to get better price for their produce. The model will also contribute towards circular economy (CE) through citizen partnership.

1 – 10 of over 2000