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Article
Publication date: 11 June 2019

Ravinder Singh and Kuldeep Singh Nagla

An autonomous mobile robot requires efficient perception of the environment to perform various tasks in a challenging environment. The precise sensory information from the…

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Abstract

Purpose

An autonomous mobile robot requires efficient perception of the environment to perform various tasks in a challenging environment. The precise sensory information from the range sensors is required to accomplish prerequisites, such as SLAM, path planning and localization. But the accuracy and precision of the sensors become unreliable in harsh environmental conditions because of the effect of rain, dust, humidity, fog and smoke. The purpose of this paper is to generate robust mapping of the environment in harsh environmental conditions.

Design/methodology/approach

This paper presents a novel technique, averaging data with short range selection (ADWSRS), to reduce the effect of harsh environmental (rain, wind, humidity, etc.) conditions on sensory information (range) to generate reliable grid mapping. The sensory information on laser and sonar sensors in terms of probability values (occupied/unoccupied cell) in generating grid maps are fused after passing through two newly designed pre-processing filters: laser averaging filter and short range selection filter. This proposed approach relies on various aspects such as averaging laser data analogous to current pose of the sensor, selection of short range with respect to threshold value to remove the effect of specular reflection/crosstalk of sonar and a newly designed apparatus in which dirt cover (glass cover) and air blower are coupled to remove the influence of dirt, rain and humidity.

Findings

This proposed approach is tested in different environmental conditions, and to verify the consistency of the proposed approach, qualitative and quantitative analyses are carried out, which shows 42.5 per cent improvement in the probability value of occupied cells in the generated grid map.

Originality/value

The proposed ADWSRS approach reduced the effect of harsh environmental conditions such as fog, rain and smoke to generate efficient mapping of the environment, which may be implemented in diverse applications such as autonomous navigation, localization, path planning and mapping.

Details

Sensor Review, vol. 39 no. 4
Type: Research Article
ISSN: 0260-2288

Keywords

Article
Publication date: 20 August 2021

Kuldeep Singh and Deepa Pillai

Research signifies that well-governed companies exhibit long-run financial results and sustainable growth. In the context of SMEs, this paper aims to review the literature…

Abstract

Purpose

Research signifies that well-governed companies exhibit long-run financial results and sustainable growth. In the context of SMEs, this paper aims to review the literature on corporate governance, the implementation challenges of corporate governance and its relationship with performance. Entwined with Indian scenarios, the study can be generalized to other emerging economies, with geographic considerations.

Design/methodology/approach

Studies from 1990 to 2020 are included in the literature review. Three databases were used for the extraction of relevant research articles: Scopus, EBSCO and ScienceDirect. To identify the relevant work, keywords along with Boolean operators for literature search were used from the research databases. The selected articles were further refined based on the authors’ keywords, journal type, data analysis methodologies and abstract analysis. Finally, 115 articles were selected and categorized into themes based on inclusion criteria for further study.

Findings

Corporate governance provides tangible and intangible benefits to SMEs. The study emphasizes on designing a cost-effective discrete governance mechanism for SMEs than the prevailing corporate governance code for large firms. Furthermore, implementing the corporate governance structure with a great level of discipline and stability is equally essential and related to performance.

Originality/value

Listing of SMEs is a relatively new phenomenon in emerging economies, including India. With listing, corporate governance and financial performance are expected to shift. The inclusion of the changing landscape of SME governance makes this study unique and relevant in the current scenario. The study will benefit the policymakers and firms to adopt optimum governance practices and link it optimally with performance.

Details

Corporate Governance: The International Journal of Business in Society, vol. 22 no. 1
Type: Research Article
ISSN: 1472-0701

Keywords

Article
Publication date: 16 April 2018

Ravinder Singh and Kuldeep Singh Nagla

Accurate perception of the environment using range sensors such as laser scanner, SONAR, infrared, vision, etc., for the application, such as path planning, localization…

Abstract

Purpose

Accurate perception of the environment using range sensors such as laser scanner, SONAR, infrared, vision, etc., for the application, such as path planning, localization, autonomous navigation, simultaneously localization and mapping, is a highly challenging area. The reliability of the perception by range sensors relies on the sensor accuracy, precision, sensor model, sensor registration, resolution, etc. Laser scanner is even though accurate and precise but still the efficient and consistent mapping of the environment is yet to be attained because laser scanner gives error as the extrinsic and intrinsic parameters varied which cause specular reflection, refraction, absorption, etc., of the laser beam. The paper aims to discuss this issue.

Design/methodology/approach

This paper presents an error analysis in sensory information of laser scanner due to the effect of varying the scanning angle with respect to the optical axis and surface reflectivity or refractive index of the targets. Uncertainties caused by these parameters are reduced by proposing a new technique, tilt mounting system (TMS) with designed filters of tilting the angular position of a laser scanner with the best possible selection of range and scanning angle for the robust occupancy grid mapping. Various experiments are performed in different indoor environments, and the results are validated after the implementation of the TMS approach with designed filters.

Findings

After the implementation of the proposed TMS approach with filters, the errors in the laser grid map are reduced by 15.6 percent, which results in 62.5 percent reduction in the collision of a mobile robot during autonomous navigation in the laser grid map.

Originality/value

The TMS approach with designed filter reduces the effect of variation in intrinsic and extrinsic parameters to generate efficient laser occupancy grid map to achieve collision-free autonomous navigation.

Details

International Journal of Intelligent Unmanned Systems, vol. 6 no. 2
Type: Research Article
ISSN: 2049-6427

Keywords

Article
Publication date: 7 January 2019

Ravinder Singh and Kuldeep Singh Nagla

An efficient perception of the complex environment is the foremost requirement in mobile robotics. At present, the utilization of glass as a glass wall and automated…

Abstract

Purpose

An efficient perception of the complex environment is the foremost requirement in mobile robotics. At present, the utilization of glass as a glass wall and automated transparent door in the modern building has become a highlight feature for interior decoration, which has resulted in the wrong perception of the environment by various range sensors. The perception generated by multi-data sensor fusion (MDSF) of sonar and laser is fairly consistent to detect glass but is still affected by the issues such as sensor inaccuracies, sensor reliability, scan mismatching due to glass, sensor model, probabilistic approaches for sensor fusion, sensor registration, etc. The paper aims to discuss these issues.

Design/methodology/approach

This paper presents a modified framework – Advanced Laser and Sonar Framework (ALSF) – to fuse the sensory information of a laser scanner and sonar to reduce the uncertainty caused by glass in an environment by selecting the optimal range information corresponding to a selected threshold value. In the proposed approach, the conventional sonar sensor model is also modified to reduce the wrong perception in sonar as an outcome of the diverse range measurement. The laser scan matching algorithm is also modified by taking out the small cluster of laser point (w.r.t. range information) to get efficient perception.

Findings

The probability of the occupied cells w.r.t. the modified sonar sensor model becomes consistent corresponding to diverse sonar range measurement. The scan matching technique is also modified to reduce the uncertainty caused by glass and high computational load for the efficient and fast pose estimation of the laser sensor/mobile robot to generate robust mapping. These stated modifications are linked with the proposed ALSF technique to reduce the uncertainty caused by glass, inconsistent probabilities and high load computation during the generation of occupancy grid mapping with MDSF. Various real-world experiments are performed with the implementation of the proposed approach on a mobile robot fitted with laser and sonar, and the obtained results are qualitatively and quantitatively compared with conventional approaches.

Originality/value

The proposed ASIF approach generates efficient perception of the complex environment contains glass and can be implemented for various robotics applications.

Details

International Journal of Intelligent Unmanned Systems, vol. 7 no. 1
Type: Research Article
ISSN: 2049-6427

Keywords

Article
Publication date: 1 October 2018

Ravinder Singh and Kuldeep Singh Nagla

Modern service robots are designed to work in a complex indoor environment, in which the robot has to interact with the objects in different ambient light intensities (day…

Abstract

Purpose

Modern service robots are designed to work in a complex indoor environment, in which the robot has to interact with the objects in different ambient light intensities (day light, tube light, halogen light and dark ambiance). The variations in sudden ambient light intensities often cause an error in the sensory information of optical sensors like laser scanner, which reduce the reliability of the sensor in applications such as mapping, path planning and object detection of a mobile robot. Laser scanner is an optical sensor, so sensory information depends upon parameters like surface reflectivity, ambient light condition, texture of the targets, etc. The purposes of this research are to investigate and remove the effect of variation in ambient light conditions on the laser scanner to achieve robust autonomous mobile robot navigation.

Design/methodology/approach

The objective of this study is to analyze the effect of ambient light condition (dark ambiance, tube light and halogen bulb) on the accuracy of the laser scanner for the robust autonomous navigation of mobile robot in diverse illumination environments. A proposed AIFA (Adaptive Intensity Filter Algorithm) approach is designed in robot operating system (ROS) and implemented on a mobile robot fitted with laser scanner to reduce the effect of high-intensity ambiance illumination of the environment.

Findings

It has been experimentally found that the variation in the measured distance in dark is more consistent and accurate as compared to the sensory information taken in high-intensity tube light/halogen bulbs and in sunlight. The proposed AIFA approach is implement on a laser scanner fitted on a mobile robot which navigates in the high-intensity ambiance-illuminating complex environment. During autonomous navigation of mobile robot, while implementing the AIFA filter, the proportion of cession with the obstacles is reduce to 23 per cent lesser as compared to conventional approaches.

Originality/value

The proposed AIFA approach reduced the effect of the varying ambient light conditions in the sensory information of laser scanner for the applications such as autonomous navigation, path planning, mapping, etc. in diverse ambiance environment.

Details

World Journal of Engineering, vol. 15 no. 5
Type: Research Article
ISSN: 1708-5284

Keywords

Article
Publication date: 29 October 2019

Ravinder Singh and Kuldeep Singh Nagla

The purpose of this research is to provide the necessarily and resourceful information regarding range sensors to select the best fit sensor for robust autonomous…

Abstract

Purpose

The purpose of this research is to provide the necessarily and resourceful information regarding range sensors to select the best fit sensor for robust autonomous navigation. Autonomous navigation is an emerging segment in the field of mobile robot in which the mobile robot navigates in the environment with high level of autonomy by lacking human interactions. Sensor-based perception is a prevailing aspect in the autonomous navigation of mobile robot along with localization and path planning. Various range sensors are used to get the efficient perception of the environment, but selecting the best-fit sensor to solve the navigation problem is still a vital assignment.

Design/methodology/approach

Autonomous navigation relies on the sensory information of various sensors, and each sensor relies on various operational parameters/characteristic for the reliable functioning. A simple strategy shown in this proposed study to select the best-fit sensor based on various parameters such as environment, 2 D/3D navigation, accuracy, speed, environmental conditions, etc. for the reliable autonomous navigation of a mobile robot.

Findings

This paper provides a comparative analysis for the diverse range sensors used in mobile robotics with respect to various aspects such as accuracy, computational load, 2D/3D navigation, environmental conditions, etc. to opt the best-fit sensors for achieving robust navigation of autonomous mobile robot.

Originality/value

This paper provides a straightforward platform for the researchers to select the best range sensor for the diverse robotics application.

Article
Publication date: 22 September 2021

Jitendra Yadav, Madhvendra Misra, Nripendra P. Rana and Kuldeep Singh

The paper aims to explore the influence of cybersecurity on the semantic orientation of the sports consumers. Focusing on both sport and esports, this study finds the…

Abstract

Purpose

The paper aims to explore the influence of cybersecurity on the semantic orientation of the sports consumers. Focusing on both sport and esports, this study finds the social media factors contributing in the sentiment formation and commenting behavior on Twitter and proposes a scheme for attitude modulation through identification of highly engaged nano-influencers.

Design/methodology/approach

Experimental design was used as the research methodology. Data mining from Twitter using RStudio software was conducted using the keyword “cybersecurity” during the time of pandemic. Final corpus of 31,891 tweets were considered for the study. Initial sentiment analysis has been conducted to explore the consumer's emotional inclination towards cybersecurity. Further through generalized equation modeling the impact of social media attributes over the consumer's posting behavior has been analyzed.

Findings

The research findings reveal that users are inherently positive towards cybersecurity adoption in sports and the factors such as number of tweets, number of positive words contained in these tweets and the authenticity of the information source boost the pre-established tweeting behavior. However, the influx of information from non-organizational sources such as trending topics and discussions have negative impact over the users.

Originality/value

This study is first to explore the role of nano-influencers as communication moderators over digital social platforms. This study offers a new understanding of key contributing attributes of sentiments formation over social media and offers a scheme of selection of nano-influencers to modulate the pre-established sentiments of the users. Finally, the current study offers valuable insights into social media engagements and selection of nano-influencers for practicing marketing managers.

Details

Information Technology & People, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0959-3845

Keywords

Article
Publication date: 20 September 2022

Kuldeep Singh and Shailesh Rastogi

The public listing of small and medium enterprises (SMEs) is a recent phenomenon in India, started in 2012. Such a paradigm shift for SMEs has altered the ownership…

Abstract

Purpose

The public listing of small and medium enterprises (SMEs) is a recent phenomenon in India, started in 2012. Such a paradigm shift for SMEs has altered the ownership structure of these firms. In addition, the listing has provided a notable status to SMEs, leading to a shift in exposure to market competition. Literature signifies that these changing dynamics are likely to impact the firm value. This study aims to examine the effects of promoters’ ownership and market competition on the firm value of listed SMEs in India. Ownership concentration (promoters’ ownership) is investigated as the primary proxy for internal governance mechanism, while market competition is investigated as an external form of firm regulation.

Design/methodology/approach

Three years of panel data from 2018 to 2020 of 80 listed Indian SMEs are used to conduct the analysis. The fixed effects model and cluster robust standard errors captured the detected fixed effects while adjusting for heteroskedasticity and autocorrelation. Besides, moderation analysis is conducted to test if competition regulates the relation between promoters’ ownership and firm value.

Findings

Promoters’ ownership does not impact the firm value significantly. However, market competition is significant and negatively drives the firm’s value. So, the market competition provides external regulation and coerces the firms to behave well to conserve the firm value. Finally, competition does not regulate the relationship between ownership effects and firm value. Therefore, the study contrasts the belief that the benefits of internal governance (especially promoters’ ownership) for firms in competitive economies are subject to market competition.

Originality/value

The study establishes the possibility of an integrated approach where internal and external governance mechanisms coexist to drive the firm value and endorses the same. The study is relevant to shareholders, practitioners, lawmakers and academics.

Details

Journal of Indian Business Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1755-4195

Keywords

Article
Publication date: 7 December 2021

Jitendra Yadav, Madhvendra Misra, Nripendra P. Rana, Kuldeep Singh and Sam Goundar

Based on the concepts confined in Ajzen's theory of planned behavior (TPB), this study investigates users' attitudes towards adoption of a blockchain-based framework in…

Abstract

Purpose

Based on the concepts confined in Ajzen's theory of planned behavior (TPB), this study investigates users' attitudes towards adoption of a blockchain-based framework in the esports industry that proposes a scheme of rewarding stakeholders for their invested attention along with blockchain technology's inherent protocols.

Design/methodology/approach

The present study uses RStudio (Version 1.3.1093) package RedditExtractoR for scraping and analysis of the discussion referring to the keyword “Verasity” on the Reddit website. The final corpus of 1,913 user comments was considered for the study. Sentiment analysis was initially conducted to explore the semantic orientation of the users concerning Verasity. This was followed by generalized equation modeling to analyze the impact of social media attributed to the users' commenting behavior.

Findings

The study found that Redditors, in general, have a positive attitude towards the adoption of a blockchain-based esports platform. This was validated through the empirical findings. The regression model states that there is a significant positive impact of the positivity in the comments over the Redditors' attitude and in their commenting behavior.

Originality/value

This study offers a new understanding of key contributing attributes of sentiment formation over social media concerning a blockchain-based esports framework. The study also establishes an empirical relationship between the social media attributes and the commenting behavior of Redditors. Finally, the current study offers valuable insights into social media engagements and the selection of highly influential Redditors for practicing marketing managers.

Details

International Journal of Sports Marketing and Sponsorship, vol. 23 no. 4
Type: Research Article
ISSN: 1464-6668

Keywords

Article
Publication date: 12 February 2021

Kuldeep Singh and Madhvendra Misra

This paper takes a critical look at the meaning of corporate social responsibility (CSR) based on the available literature on the subject matter. As CSR is an evolving…

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Abstract

Purpose

This paper takes a critical look at the meaning of corporate social responsibility (CSR) based on the available literature on the subject matter. As CSR is an evolving concept both in meaning and practice, this study aims to highlight CSR actions of the world's six largest organizations (Google, Twitter, Amazon, Apple, ExxonMobil and Walmart). The purpose of choosing these organizations and their CSR adoption was to examine the business-society relationship and the role of key stakeholders in establishing this association.

Design/methodology/approach

This study examined CSR through the case study approach and provides valuable insights by showing that CSR is a connecting link between business and society. Specifically, the authors took a crucial look at various contentious, often ambiguous definitions, theoretical framework, brief historical development, issues and controversies surrounding it, the role of CSR in community development and summing it up with the future direction and managerial implications.

Findings

This study observed that there are some developmental strategies taking place today which are relevant to the issue at stake, such as: contributing to the world economy, corporations donating or engaging in a wide range of philanthropic gestures now than ever and contributing to the beauty of the society by meeting rising community expectations.

Originality/value

By analyzing the worlds' 6 largest companies' CSR initiatives, this study provides valuable insights by showing that CSR is a connecting link between business and society and is based on win-win collaborations between civil society, business, investors and government. These companies' CSR initiatives have been mostly unexplored in past studies.

Details

Journal of Economic and Administrative Sciences, vol. 38 no. 2
Type: Research Article
ISSN: 1026-4116

Keywords

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