Bio: Rajkumar Paulrajan is an academic researcher from Anna University. The author has contributed to research in topics: Service provider & Service quality. The author has an hindex of 2, co-authored 2 publications receiving 65 citations.
TL;DR: In this article, a research study was conducted with an objective to understand the Indian consumers' perception choice in selecting cellular mobile telecommunication service providers, and the outcome of this research shows a comprehensively integrated framework to understand relationships among several dimensions.
Abstract: A research study was conducted with an objective to understand the Indian consumers’ perception choice in selecting cellular mobile telecommunication service providers. Consumers’ perception is widely varied in accordance with the Communication quality, call service, facilities, price, customer care and service provider’s attributes. A structured questionnaire was developed to collect the required primary data from the consumers. Collected data were analysed, reliability and factor analysis were carried out. The outcome of this research shows a comprehensively integrated framework to understand the relationships among several dimensions. The study shows communication and price were most influential and most preferential factors in selecting telecommunication service provider. However, product quality and availability has a significant impact on consumer perception choice in selecting cellular mobile service provider.
TL;DR: In this paper, structural validity of a simulation model -right behaviour for the right reasons-is a stringent measure to build confidence in simulation model regardless of how well the model passes behaviour validity tests.
Abstract: Simulation models are becoming increasingly popular in the analysis of important policy issues including global warming, population dynamics, energy systems, and urban planning. The usefulness of these models is predicated on their ability to link observable patterns of behaviour of a system to micro-level structures. This paper argues that structural validity of a simulation model -right behaviour for the right reasons- is a stringent measure to build confidence in a simulation model regardless of how well the model passes behaviour validity tests. That leads to an outline of formal structural validity procedures available but less explored in system dynamics modelling ‘repertoire’. An illustration of a set of six tests for structural validity of both system dynamics and agent-based simulation models follows. Finally, some conclusions on the increased appeal for simulation models for policy analysis and design are presented. Key words: System Dynamics, Simulation, Retailer selection
TL;DR: This paper provides a review of around 100 recent journal articles starting from year 2000 to present the various data mining techniques used in multiple customer based churn models, thereby providing a roadmap to new researchers to build upon novel churn management models.
Abstract: Telecommunication sector generates a huge amount of data due to increasing number of subscribers, rapidly renewable technologies; data based applications and other value added service. This data can be usefully mined for churn analysis and prediction. Significant research had been undertaken by researchers worldwide to understand the data mining practices that can be used for predicting customer churn. This paper provides a review of around 100 recent journal articles starting from year 2000 to present the various data mining techniques used in multiple customer based churn models. It then summarizes the existing telecom literature by highlighting the sample size used, churn variables employed and the findings of different DM techniques. Finally, we list the most popular techniques for churn prediction in telecom as decision trees, regression analysis and clustering, thereby providing a roadmap to new researchers to build upon novel churn management models.
TL;DR: The Key Performance Indicators (KPIs) for Quality of Service (QoS) of Global System for Mobile Communications (GSM) networks in Nigeria are provided and analyzed and will assist the network providers, Nigerian government, local and international regulatory bodies, policy makers, and other stakeholders in ensuring access to high quality telecommunications services.
TL;DR: In this article, the authors examined the impact of service quality, perceived usefulness and users' cognitive satisfaction to determine the third-generation (3G) mobile phone users' behavioural retention in using 3G telecommunications services.
Abstract: Purpose The purpose of this study is to examine the impact of service quality, perceived usefulness and users’ cognitive satisfaction to determine the third-generation (3G) mobile phone users’ behavioural retention in using 3G telecommunications services. Design/methodology/approach A total of 243 valid questionnaires were collected from 3G users in the Klang Valley, Malaysia. The combination of partial least squares (PLS) path modelling approach and structural equation modelling (SEM; PLS-SEM) technique was used to analyze the measurement and structural model. Findings Our empirical assessment supports the proposed research hypotheses and further suggests that service quality is a second-order reflective construct comprising navigation and visual design, management and customer service and system reliability and connection quality. Originality/value Prior studies have examined the impact of service quality, perceived usefulness, overall users’ satisfaction and behavioural intention on an information system in general. This study is among the few studies that have attempted to gain insights into 3G users’ post-adoption experience with telecommunications services.
TL;DR: A model on churn factors, identified from the study is proposed to serve as a roadmap, to build upon exciting churn management techniques.
Abstract: The communications sector is emerging with new technologies, wireless and wireline services. The industry's success expects a better perception of customer requirements and superior quality of service and models. Customer churn has a huge impact on companies and is the prime focus area for the companies to remain competitive and profitable. Hence, significant research had been undertaken by researchers worldwide to understand the dynamics of customer churn. This paper provides a review of around 75 recent journal articles (starting from year 2000) to identify the various churn factors and their complex relationships, in existing telecom churn literature. It gives detailed discussion of what factors were identified in various studies, the sample sizes used and the method used for the study by different researchers. The gaps identified in the previous studies have also been discussed. A model on churn factors, identified from the study is proposed to serve as a roadmap, to build upon exciting churn management techniques.
TL;DR: In this article, the suitability of the Middle Miocene aquifer of the Hajeb Layoun-Jelma basin in Central Tunisia for drinking and irrigation is evaluated using principal component analysis.
Abstract: Dramatic increase of population in the Hajeb Layoun City and its surrounding areas (Sbeitla, Jelma) has led to a higher consumption of water for both domestic and irrigation demands. The various uses of these resources lead to the degradation of their quality and quantity. Therefore, water quality issues and its management options need to be given greater attention in this semi-arid region. The present study is the first attempt to determine the groundwater suitability for drinking and irrigation. The Middle Miocene aquifer of Hajeb Layoun-Jelma basin), Central Tunisia, was studied using hydrochemical and statistical approaches. According to the principal component analysis approach, the source of the groundwater mineralization is manifested by both natural (lithology, quality of recharge waters, and mixing with other types of water) and the anthropogenic processes (agriculture, urban development, and increasing exploitation of water resources). Thus, the suitability for drinking purpose was tested by “water quality index.” However, irrigation quality was evaluated by the sodium absorption ratio, the electrical conductivity, the Wilcox diagrams, the “water quality index,” the soluble sodium percentage, the magnesium hazard, and the Kelly’s ratio. Results indicate that only one third of the study area groundwater quality is suitable for drinking and irrigation uses. Thus, obtained results can be used as a basic document for realistic management of groundwater quality.