International Journal of Business and Systems Research (37 papers in press)
Assessing Service Quality using Fuzzy Numbers and TOPSIS: An application to Self-Contained and Serviced Apartments
by Juan Carlos Martín, Cira Mendoza, Concepción Román
Abstract: This research paper proposes a methodological framework to assess the service quality (SQ) of self-contained and serviced apartments (SCSAs). The study is based on 2753 surveys administered in a SCSA resort located in the south of Gran Canaria Island. SQ is based on a questionnaire that contains a list of 48 attributes. The answers format is based on a 4-facial expressions scale that cannot be easily transformed in a numeric scale. Thus, the ambiguity and possible biased analysis has partly overcome applying the fundaments of the Fuzzy Set Theory. TOPSIS approach is then employed to obtain a synthetic SQ indicator. Finally, an observation-attribute relative performance analysis is developed to identify the operational areas that need improvement or can keep up the good work. The findings of this study may assist managers and policy planners with important insights about the attributes that tourists value more.
Keywords: Fuzzy numbers; TOPSIS; Service quality; Extra-hotel industry; SCSAs; Elasticity; Serviced-apartments; Ideal Solutions;Attribute Relative Performance; Observation Relative Performance.
Managing University Rank and Tenure Decisions Using a Multi-criteria Decision-Making Approach
by Enrique Mu, Cynthia Nicola
Abstract: Faculty evaluation in academia is a serious concern for higher-education administrators. This study develops a model for rank and tenure (R&T) decisions using an Analytic Hierarchy Process (AHP) multi-criteria decision-making (MCDM) approach. Literature review suggests most R&T evaluations are rather subjective in many institutions. A case method approach is used for the development of a model and demonstration of its use. The proposed evaluation model provides objectivity, transparency and customization for R&T committee decisions in higher-education institutions.
Keywords: AHP; Analytic Hierarchy Process; rank and tenure; university promotion decisions; decision transparency.
Hedonic Preference for Technological Devices Justified by Utilitarian Application
by Emílio José M. Arruda-Filho
Abstract: This study analyses consumer behaviour for bundled mobile phones, and tests the perception that integrated products have higher hedonic, rather than utilitarian, value. The study covers a variety of scenarios based on brand, price, and preference (hedonic or utilitarian) in the selection of mobile telecommunications devices. Two studies are developed on two specific themes: benchmarking of hedonic and utilitarian values according to consumers current mobile phones, and hypotheses testing of consumer preferences related to hedonism/utilitarianism under the conditions of brand, price, and mobile characteristics (kind of convergence) proposed. This study enhances understanding of consumers preferences and market tendencies according to their values related to hedonic and utilitarian characteristics converged in mobile devices. Thus, it has academic implications related to the theory of technology convergence according to the characteristics of new products that can lead to a combined hedonic, social, and utilitarian values perception. In terms of practical implications, the findings enhance comprehension for enterprises regarding which features/attributes, according to significance, are most closely related to the various scenarios that consumer are exposed to.
Keywords: hedonic value; utilitarian value; technology preference; bundle products.
The Impact of Governmental policy on the Relationship between IT systems inputs and Business Performance: A Comparison of Large Corporations and SMEs in Taiwan
by Hsin-Pin Fu, Hsiaoping Yeh, Wen-Chin Yeh, Tzu-Ling Chien
Abstract: To rapidly adapt to global competition, manufacturers business models have shifted from a company focus to a focus on the whole supply chain. The Industry Global E-Logistics Diffusion Plan has provided funds for manufacturers to establish their IT-based logistics systems. However, the performance of such establishments has not yet been evaluated, particularly under the influences of government policy. This study investigated the impacts of successful IT-based logistics systems and partnership in the supply chain on business performance moderated by government policy and organizational effects. The findings show that, for both large corporations and small-and-medium companies, their IT inputs and partnership would positive affect business performance. Government policy shows its moderating effect on IT inputs boosting up business performance. Yet, particularly for large corporations, organizational factors can also moderate the causal relationship between IT inputs and business performance.
Keywords: IT input; partnership; organization; government policy; business performance.
Environmental Uncertainty and Corporate Social Responsibility
by Brian Chabowski, Sharon Huang, Li Sun
Abstract: This study examines the impact of environmental uncertainty on corporate social responsibility (CSR). Using a 23-year panel sample with 3,053 unique U.S. firms and 23,742 firm-year observations, we test the ethics view and risk management view of corporate social responsibility. We find a significant and negative relationship between environmental uncertainty and corporate social responsibility, suggesting that firms are less likely to engage in corporate social responsibility activities when faced with an uncertain environment. Our results support the ethics view of corporate social responsibility. These insights should interest policymakers who implement guidelines on CSR and firms that are considering adjusting their CSR levels. Our results should also provide practitioners with useful insights regarding which specific determinants are associated with a companys level of CSR activities, and interest firms that attempt to incorporate CSR in their business systems.
Keywords: environmental uncertainty; corporate social responsibility ; business systems.
Decreasing operational costs of nonprofit community-based blood centers
by Sima M. Fortsch, Qunfeng Liao
Abstract: Blood is a necessary resource for hospitals; however, acquiring blood poses several challenges for blood centers and hospital blood banks. First, blood is a perishable and natural resource that cannot be manufactured at the time of need. Second, supply and demand of blood are uncertain due to seasonality, natural disasters, and availability of donors. Third, blood centers and hospital blood are challenged in acquiring blood economically, as the price of one package of blood has reached the price of an iPad. Prior research shows the popular Economic Order Quantity (EOQ) model is not applicable to blood orders due to the ample shortages that result from the model. In order to provide fresh inventory and to reduce operational costs, this study employs an econometric methodology known as AIAO (ARMA-in-ARMA-out, where ARMA stands for Autoregressive Integrated Moving Average) combined with lean managerial accounting practices to place orders. Results show that applying the above system of ordering could supply fresh blood inventory and decrease operational costs for blood centers.
Keywords: perishable; wastage; shortage; gross income; inventory turnover; ordering; systems.
SCORE Framework: A Layered Approach for Enterprise Architecture
by Priyanka Chakraborty, Anirban Sarkar
Abstract: Continuous and rapid changing business environment is a driving force for agile enterprise system because several new services and solutions are emerging from the multiple exchanges over time. A suitable Enterprise Architecture Framework (EAF) must be established for established for effective delivery of enterprise level technologies by adopting service-oriented architecture (SOA). However, existing non-SOA based EAFs are lacking of adopting such agility. On the other hand, existing SOA-based EAFs though can resolve the issues of flexibility and scalability, but they are less efficient to handle context sensitivity and agility of Enterprise System. To address these challenges, this paper proposes a novel SOA-based EAF, called SCORE framework that is comprised of five loosely coupled layers. Besides formal description, the proposed SCORE framework is illustrated with detailed case study on Care Management System. Moreover, a detailed comparative analysis is performed to express the strength of the proposed framework over the existing approaches.
Keywords: Enterprise Architecture Framework; Context Modelling; Service Oriented Architecture; Feature Graph; Interaction and Flow Graph; Collaboration Graph; Re-configurability; Systems; Technology.
SYSTEM DYNAMICS MODEL FOR SERVICE QUALITY IMPROVEMENT: A CASE STUDY OF SURAKARTA TOURISM, INDONESIA
by Santi Novani, Lidia Mayangsari, Nurtami Prihadi, Yudi Azis
Abstract: Value co-creation concept implies that customers can actively participate in every stage of the service development process. Service providers are encouraged to build a unique and memorable experience to remain competitive. The concept is applicable in tourism settings. This study adopts system dynamics approach to study the conditions of tourism in Surakarta city, Indonesia. This study incorporates SERVQUAL dimensions of tangibility, reliability, responsiveness assurance, and empathy to construct a co-created tourism policy in the city. There are five interventions proposed in the study: infrastructure, platform, human resource, events, and promotions. The study reveals that to increase the number of tourists, Surakarta city is urged to invest bigger in the transportation sector and perform interactive online platform to accommodate a co-creation among stakeholders in the tourism sector. This study proposes alternatives to help the decision maker to understand the complexity of tourism sector in Surakarta both in theory and practice.
Keywords: Surakarta; Customer Value Co-Creation; System Dynamics; Service Quality.
Solving Logistics Problems through an Infinite Servers Queue Systems Approach
by José António Filipe, Manuel Alberto M. Ferreira
Abstract: It is exemplified in this article a proceeding based on the busy period concept of infinite servers queues to deal with equipments failures. Evidently, the occurrence of failures in the equipment is a situation that demands managerial procedures in order to repair the failures as quick as possible and also to minimize the losses in the equipment operation. The model presented here - by means of infinite servers queuing systems - allows to generate system performance measures. It also contributes to solve organizational structures problems, by minimizing the risks of the inoperative structures of organizations, which have considerable logistics pernicious consequences for companies and often for regions where they are implanted.
Keywords: Queue; Busy period; Business logistics; Equipment; Failures; Management; Efficiency.
Identification and analysis of factors influencing food advertisements on buying behaviour of children in emerging consumption markets: the case study of Afghanistan
by Jimbo Henri Claver
Abstract: This study assessed the impact of food advertising on purchasing and consumption behaviour of children in emerging consumption markets. A case study of consumption market in Kabul, Afghanistan was conducted on various dimensions by measuring the impact of several factors. The study relied on primary data collected by administering 385 survey questionnaires to children aged between 5 and 15 years old. Data were analysed with STATA 2013 using regression analysis, correlation analysis and descriptive statistics methods. The data and statistical methods and models were tested for validity and reliability; these tests includes Cronbachs alpha, Jarque-Bera, Bruesch-Pagan/Cook-Wisberg, Winsorization, Skewness and Kurtosis, Akaike Information Criteria (AIC), and Variance Inflation Factor (VIF). The study found that television advertising had the most influence on purchasing and consumption behaviour of children directly or indirectly through their parents. The study also found that the nature and magnitude of advertising outcome on childrens purchasing and consumption behaviour varies based on factors such as age and gender of children. The study provided first-hand information for food industry owners, parents, advertisers, and governmental policy makers.
Keywords: : Children’s buying behaviour; food advertisement; TV advertising; parents’ influence; quantitative analysis; reliability; multiple regression; business statistics; AIC criterion.
A Queuing-based Mathematical Model for the Congested Network Design Problem under Demand Uncertainty
by Amir Abbas Shojaie, Mohamad Amin Kaviani
Abstract: In this study, we propose a queuing-based mathematical model for analyzing the congestion phenomenon in a transportation network. For this purpose, we present a mathematical model for network design with the objective of the cost minimization and optimal demand satisfaction under demand uncertainty situation. The queuing theory usage helps to better model the congestion item caused by customers referrals to the facilities of the transportation network. Moreover, a numerical example is solved to demonstrate the validity of the proposed model. To the best of the authors knowledge, this is the first study which looks at the congested transportation network problem considering demand uncertainty from a queuing theory perspective.
Keywords: Queuing theory; Congested networks; Transportation; Mathematical modeling; Demand uncertainty; Systems; Optimization.
Impact of After Sales - Service on Consumer Behavioral Intentions
by Wajeeha Aslam, Kashif Farhat
Abstract: Technology in the industry has improved the proceses, products and customer experience. Due to this, the importance of after sales service is increasing. The aim of this study is to identify the impact of after- sales service quality delivery on customers overall satisfaction in the retail sector . Also, the impact of overall satisfaction on word of mouth and repurchase intention. A sample of 330 responses were collected through questionnaire by purposive sampling technique from the customers who had purchased an electronic equipment (UPS or Air condition). EFA, CFA and SEM analyses were performed to measure the relationships among constructs with the help of SPSS and Amos. The result revealed that after-sales service quality delivery affects customer overall satisfaction which leads to repurchase intention and word-of-mouth. This study helps the retail and marketing managers as it allows them to differentiate their offerings in order to develop the long term relationship with their customers. This paper especially caters to the retail sector which is dynamic and where customers are highly involved.
Keywords: After-sales services; Customer satisfaction; Repurchase Intention; Word of Mouth; Delivery; Technology.
The TODIM multi-criteria method applied to the ANBIMA ranking of Brazilian investment funds
by Frederico Silva Valentim Sallum, Luiz Flavio Autran Monteiro Gomes, Maria Augusta Soares Machado
Abstract: ANBIMA, the Brazilian Financial and Capital Markets Association, monthly presents the ranking of investment funds management by category. This ranking makes available information about the management of resources from players that invested in funds in Brazil. The institutions that are included in this ranking are ordered based on the total amount of the net equity under management in all categories of investment funds. The research presented in this article applies the TODIM multi-criteria method for building the ANBIMA ranking of June/2017 using the 10 best-positioned institutions. In order to accomplish this, each participating institution is considered as an alternative and each category of investment fund functions as a criterion. This allows for a comparison between the ANBIMA ranking against the ranking obtained by using the TODIM method. This comparison points to the possibility of making use of a new, enriched way to order the institutions based on pairwise analyses and taking into account expressions of gains and losses.
Keywords: ANBIMA Ranking; Management of Investment Funds; Ranking of Investment Funds; TODIM Method.
Building loyalty in e-commerce: Does consumer income matter?
by Viviane Ferreira, Juracy Parente, Mateus Ponchio, Felipe Zambaldi
Abstract: In emerging markets, the rapid expansion of online retailing is mainly driven by new adopters from lower-income consumer segments. However, little is known about the behaviour of this group in online retail. This study evaluates the relationships between e-loyalty, e-satisfaction, e-trust and e-quality, paying particular attention to the moderating role of consumer income. Data were collected from a sample of 1,020 Brazilian consumers via a web survey and were analysed using structural equation modelling (SEM). Among the main results, this study finds that consumers from the higher-income group pay more attention to the quality of website information, while consumers from the lower-income group emphasize the importance of fulfilment. E-satisfaction is more important than e-trust in determining e-loyalty and these relationships are moderated by income. Online retailers should pay special attention to tailoring their promotional efforts to foster consumer loyalty according to different consumer income groups.
Keywords: loyalty; e-commerce; emerging markets; quality; satisfaction; trust; structural equation modelling; income moderation effect; Brazilian consumers; technology.
Critical success factors in the stages of technological transfer from university to industry: Study in the Andean countries
by Ximena Lopez-Mendoza, David Mauricio
Abstract: Technology transfer is a tool for the development of societies and its success is affected by several factors; hence, it is important to identify them and note how they influence the different stages of the technology transfer process. The present work identifies new factors (adaptation to change, government policies, selection criterion of the project portfolio, work environment, product satisfaction, entropy, stress, and ethics), the same ones that have been supported in the theories of human and organisational behavior, these affect all stages of the technology transfer process from university to industry. The study was made based on confirmatory factor analysis and the model of structural equations and was carried out on 85 universities in four countries of the Andean region. The obtained results confirm that, at 95% confidence, the proposed factors influence all stages of the technology transfer process.
Keywords: Factors of technology transfer; technology transfer; stages of technology transfer; model of structural equations.
Research on Drug-Induced Liver Injury in Association with Co-Infections and Anti-Tuberculosis Drugs
by Wu Li-Ya, Weng Sung-Shun, Wong Wing-Wai
Abstract: This study uses data mining techniques to find out the risk factors for the tuberculosis (TB) patients with drug-induced liver injury (DILI). The Taiwan National Health Insurance Database is used for collection of domestic TB cases during 2004-2011 to study these TB patients and their drug prescribing patterns in order to build a model to predict the risk of drug-drug interaction between Hepatitis (HBV/HCV), Acquired Immune Deficiency Syndrome (AIDS) and TB. The results out of the total 188,032 TB patients have shown that 77,574 have taken anti-TB drugs. Afterwards, DILI occurred in 0.7% of the cases. Besides, for those DILI patients associated with TB and HBV or HCV, this study reveals that DILI is associated with the use of ethambutol and rifampin. It is suggested that TB patients associated with HCV should pay attention to their uses of rifampicin, and TB patients (especially males) associated with HBV should pay attention to the ethambutols impact on DILI. Moreover, our results also showed that having both AIDS and TB shows no significant effect on DILI.
Keywords: drug interactions; tuberculosis; data mining; drug-induced liver injury.
Extension and Adaptation of an Aspect Oriented Programming Language for Real-Time Systems
by Wafa Gabsi
Abstract: Aspect-Oriented Programming (AOP) supports the separation of concerns cutting across the implementation of a software application to avoid scattering and tangling. We focus on the integration of this paradigm in the development of real-time systems. AOP is based on the weaving process to automatically integrate separately created segments of code, into the application. In the context of real-time systems, this can compromise determinism by including constructs that may violate real-time constraints beyond the control of the developer. In this paper, we both study and test the AspectAda language, an existing aspect extension for Ada, in order to adapt its implementation to respect real-time constraints. We study this language's grammar, runtime and especially weaving operations. Then, we extract its limits and provide solutions to adapt it to support real-time constraints. Finally, we propose a new architecture of the compiler/weaver to overcome the problems of the existing one and we detail its different parts.
Keywords: AOP; AspectAda; Ada; Real-Time Constraints; Compiler; Architecture.
The effects of performance systems and management concepts on organizational performance in the public sector in Denmark
by Steen Nielsen, Christian Nielsen
Abstract: This paper explores how different types and groups of performance systems and management concepts explain the cross-sectional variations of organizational performance within the public sector, by applying a Structural Equation Modelling approach to survey data from 318 respondents in the Danish municipal sector. We argue that links exist between different types of performance systems and a number of performance outcomes. More specific, we explore how different performance measures such as benchmarking, employee significance, innovation, accounting models and systems, strategy execution and cost allocation directly or indirectly affect performance. In particular, our data suggests that the association between adoption of accounting systems and performance is fully mediated through both strategy execution and cost allocation. Practitioners can improve empirical specifications for examining the effects of different measures and gain an understanding of the mediating effects of accounting and management concepts. These findings add to our understanding of the functioning of performance management systems within the public sector in theory and in practice.
Keywords: Accounting systems; measures; management concepts; new public management; private sector; organizational performance; structural equation modelling; and survey.
Towards a Formal Specification for an AADL Behavioral Subset using the LNT Language
by Hana Mkaouar, Bechir Zalila, Jérôme Hugues, Mohamed Jmaiel
Abstract: The analysis of real-time systems designed by architectural languages
such as AADL (Architecture Analysis and Design Language) is a challenging
research topic. In such a context, formal methods become an advocated practice
in software engineering for rigorous analysis. Yet, they are applied on specific
formalisms to be analyzed on dedicated tools.
This paper studies the formal verification of real-time systems modeled with
the AADL language and its Behavior annex. We define a formal semantics of an
AADL behavioral subset using the LNT language. This work is illustrated with
a robot case study.
Keywords: Real-time systems; Formal verification; AADL; Behavior annex.
Impact of FinTech on customer retention in Islamic banks of Malaysia
by Hasnan Baber
Abstract: This study is aimed to find the impact of much limelight topic FinTech on the customer retention in Islamic Banks of Malaysia. Islamic banks in Malaysia specifically have been on forefront in bringing FinTech into their processes at very early stage. Customers usually do not choose Islamic banks for technology but this paper will analyze the impact of FinTech in retaining customers. A 26 item questionnaire was used to gather data from 325 customers of selected banks in Malaysia by strata sampling. Statistical data was analyzed through various tests like reliability analysis, sample adequacy, factor analysis and regression analysis using SPSS 25.0. The findings of the study revealed that payments, advisory and compliance services of the FinTech has an impact on the retention of customers while financing service which is treated as important part in conventional banking has no significance on customer retention. This study will help Islamic banks to customize FinTench services for their customers and have association with such FinTech companies which adds value to their financial services.
Keywords: FinTech; Technology; Customer retention; Islamic banks; Malaysia.
An Integrated GRA-DEMATEL-ANP Framework for Evaluation of Barriers to Implementation of Green Supply Chain Management in Manufacturing Industries
by Mohamad Sadegh Sangari, Fatemeh Nikkhoo, Maziar Khoshsirat
Abstract: Nowadays, green systems and technology have received much attention due to the increased concerns about environmental issues. However, companies have faced various barriers in its implementation. Thus, proper identification and evaluation of these barriers is necessary to achieve effective results. In this paper, an integrated framework based on Grey Relational Analysis (GRA), DEMATEL, and Analytic Network Process (ANP) methods is proposed to identify and evaluate the barriers to Green Supply Chain Management (GSCM) implementation in manufacturing industries. Drawing upon an extensive literature review, a reference framework of the GSCM barriers is developed consisting of two main groups, namely internal and external barriers. GRA is used to deal with ambiguity in experts assessments. Also, the interactions and cause-effect relationships among the GSCM barriers are evaluated using DEMATEL. The relative importance of the barriers is then identified by integrating results of DEMATEL and ANP. The proposed framework is implemented in a case study of an auto manufacturing company. The results show that, by taking interrelationships of the barriers into consideration, the factors related to customer and market and business partners as well as social and managerial factors are the most important barriers to effective implementation of GSCM initiatives in the case company.
Keywords: Green Supply Chain Management (GSCM); Green Systems and Technology; Analytic Network Process (ANP); DEMATEL; Grey Relational Analysis (GRA); Barriers.
Factors Influencing Bitcoin Investment Intention: The case of Oman
by Abdelghani Echchabi, Mohammed Mispah Said Omar, Abdullah Mohammed Ayedh
Abstract: Since its development, Bitcoin has over-performed all competing cryptocurrencies, and it has reached the highest market capitalization ever in the cryptocurrency asset category. Bitcoin has not been only successful and attractive as a cryptographic currency, but also as an investment asset emerging from the systems and technology field. The current study focuses on the investment aspect of Bitcoin. Specifically, the study examines the factors that might increase the investment in Bitcoin among Muslim communities. In this regard, Oman is selected as a setting for this study due to the rapid progress in the Islamic finance and investment areas that the country has witnessed though ventured in this field relatively late compared to other countries. The study used a survey questionnaire to collect data for a sample of 200 respondents. Subsequently, the collected data was analysed using Structural Equation Modelling (SEM) as well as basic descriptive statistics and one sample t-test. The findings revealed that the respondents perceive themselves to have sufficient awareness and knowledge of the Bitcoin concept and benefits, as well as the techniques used to manage a Bitcoin account. In addition, the findings revealed that factors such as perceived ease of use, compatibility, awareness and facilitating conditions have a significant impact on Omani communities intention to invest in Bitcoin. It is worth stressing that this is one of the earliest studies that examine the Muslim communities perception and willingness to invest in Bitcoin. Hence, it is expected to be one of the foundations for the future studies in this area.
Keywords: Systems and Technology; Cryptocurrency; Bitcoin; Oman; SEM.
Formal Design Model for Service Oriented System: A Conceptual Perspective
by Amit Mandal, Anirban Sarkar
Abstract: The numerous design specifications in the service oriented architecture (SOA) standards space reflect knowledge captured mainly from the different perspectives. However, most of these approaches merely exhibits any compliance with the service design facets described commonly in different reference architectures. Moreover, most of these literatures merely drawn any correspondence between the business process facets to service design and further service design facets to real-world effect. This leads to semantic gap between services representation, its association with the business processes, and invocation of services to its real-world effects. To overcome these issues in this paper a formal model of service oriented system (SOS) has been proposed. To represent the concepts properly, here the SOS is divided into Information Model, Process Model and Action Model. The semantic relationship between the models helps in reducing the gap between the business processes and services, as well as services to its real-world effect. Further, the proposed service model facilitates the flexible, reusable and scalable service composition and it is in compliance with the open reference standards of SOA.
Keywords: Service Oriented System; Service Model; Business Process; Service Binding; Service Composition.
Analyzing Competitive Advantage of Iranian Automotive Industry Using Porter's Diamond Model, Case study: Iranian Car Manufacturers
by Ali Alavi
Abstract: The automotive industry is looked upon as one of the main sectors of transportation in todays sophisticated business systems and bringing these realities into mind, studying the issues of this industry in Iran will find a high importance. The aim of this study is to investigate the barriers and issues of car exports in Iran based on Porters diamond model of national competition. Hereupon, a related body of literature reviewed status of car exports in the world. Based on Porters model, including the four main variables and the two mediator variables, six hypotheses have been proposed. To examine the indicators a questionnaire of 25 questions is extended. After data mining and analysis of the results, five out of six hypotheses are approved. Strategy, government, related & supportive industries, chance, demand conditions factors have been accepted after conducting T-test analysis. After discussing the results there are some recommendations for improving the situation of car exports in Iran.
Keywords: Exports; Porter’s diamond model of national competition; Competitive advantage; automotive industry; Systems; Strategy.
A multicriteria forecast of the default probability in credit risk assessment
by Ayrton Benedito Gaia Do Couto, Luiz Flavio Autran Monteiro Gomes
Abstract: This study analyzes, through a multicriteria approach producing if-then rules, the possibility of forecasting the default probability for low-default portfolios in credit risk assessment. This approach relies on the simultaneous and complementary application of fuzzy and rough sets theories. The calculation of this probability is normally subject to judgments of experts, which imply subjectivity, imprecision and uncertainty of the results. In the proposed approach, the inferred if-then rules for a decision table generated by a simulation of 50 companies allowed the production of a knowledge base for the forecasting of classes of default probabilities. The "RoughSets
Keywords: Default probability; Multicriteria analysis; Rough Sets Theory; Credit risk assessment; Forecasting system.
Development and evaluation of wearable electro-goniometer for the assessment of repetitive efforts and measurement of joint trajectories during carpet weaving
by Ashish Kumar Singh, Makkhan Lal Meena, Himanshu Chaudhary, Govind Sharan Dangayach
Abstract: This study is first of its kind to investigate the occupational goniometry while using weaving hand tools. The aim is to construct, calibrate and validate a low-cost sensor-embedded glove and elbow brace. This article establishes a common thread between electro-goniometry and postural assessment techniques. A low-cost sensory electro-goniometer embedded with resistive bend sensors was evaluated for the measurement of accuracy and output linearity. The output voltages from the sensors were converted into angles by implementing LabVIEW Interface for Arduino (LIFA) based graphical environment. Ten experienced female weavers participated in the study. Dynamic recordings of the finger, wrist and elbow bending trajectories were measured using the sensory electro-goniometer. Data from the electro-goniometer, photographs, and videotapes were used to investigate the postures involved while weaving. Assessment of repetitive task (ART) technique was used to identify the postural risks. Based on the data output from each sensor, the voltage to angle optimal linear models were obtained for the measurement range of 0˚-90˚ with 5˚ steps. The accuracy of the sensors was found within the limits of traditional goniometry. ART priority scores (ES>22) for subtask 1 and 2 revealed that working posture during carpet weaving requires necessary action and hand tools should be redesigned. The low-cost electro-goniometric glove and elbow brace for measurements of hand movements could be a promising tool for postural assessment and safety systems.
Keywords: carpet weaving; sensory gloves; resistive flex sensor (RFS); electro-goniometer; goniometry; assessment of repetitive task (ART); ergonomics; carpal tunnel syndrome; systems; safety.
Special Issue on: AMMMT-2016 Recent Advances in Industrial Engineering and Management
TPM Implementation Requirements and Developing a TPM Implementation Methodology for an Educational Institution: A Case Study.
by Ravishankar Korgal, Anil Badiger, Reinhard Barutzki
Abstract: The TPM Implementation for a technical educational institute is a concept which focuses on the upkeep of technical equipment and the continuous improvement of the teaching and learning environment. The aim is to ensure the conduct of effective and efficient training in workshops and laboratories. The philosophy of TPM Implementation focuses on the training process, technical equipment, workplace environment and people. Therefore, the institute management must focus on obtaining, maintaining and managing the resources and organizational culture. Quality of training can only be achieved once all the resources are available and in balance. By focusing training on the maintenance and promoting an environment that supports teamwork, project work, open communication and problem-solving, institutional managers and staff, establish a work culture that is necessary for the implementation of the MMS philosophy. The paper focuses on the understanding institution scenario and the TPM implementation requirements in the institute and identifying the areas and developing the methodology for the implementation.
Keywords: Curriculum Development; Engineering Education; Skill; TPM.
A Literature Review on Lean, Six Sigma and ISO 9001:2015 in Manufacturing Industry to Improve Process Performance
by Veena T R, Prabhushankar G V
Abstract: During the past two decades organizations are finding intensive competition and are striving hard to survive in the market. Present day global challenges are making companies to find new techniques and methodologies to meet the market requirements with respect to quality, cost and timely delivery of products. In this paper a literature review is made on lean manufacturing, Six Sigma methodology and ISO 9001: 2015 QMS. Based on literature review a comparative study is made on Lean implementation, Six Sigma methodology and ISO 9001: 2015 QMS by considering the dimensions such as Objective; Focus; Management; Organization; Resource requirement; Training; Framework / Model and Documentation and it is found that the gap exists between all the three techniques. Based on the gap data a framework will be developed which integrates all the three methodologies to fill the gap or meet the challenges or limitations of the above three model. This integrated model if effectively implemented with focus on customer requirements, improve employee empowerment creativity, and contractual obligations; contribute to bottom line by reducing variation and eliminating waste thus improving the process performance.
Keywords: Integrated model; Lean manufacturing ; Six Sigma methodology; Quality Management System(QMS); Tools and Techniques.
Role of Human Anthropometry in Manufacturing Process Optimization
by M.M. Ganganahallimath, R.B. Math, Vijaykumar Hiremath
Abstract: Of the 3M‟s (Men, Machine & Material) involved in the manufacturing process, all have a role to play in the process optimization. Since the start of the industrial revolution, the world has seen enormous growth in the technology. Man has been seeing the growth in the technology of machines, production methods and the emergence of material technology. Very less growth has seen on the human aspect of the manufacturing process. The human factor is an important parameter, which should be considered in the process of optimizing the manufacturing process. Here comes into picture the interdisciplinary science of Ergonomics. Ergonomics is the Greek word which means work, nomos means laws i.e. laws of work. Ergonomics puts more emphasis on the integration of human considerations into total process. It attempts to fit the job to the man (FJM), which is the guiding principles of Ergonomics. Rather than fitting man to the job (FMJ) which requires selecting workers of right aptitude for a particular job to improve the productivity or efficiency. In this paper an effort has been made to elaborate the role of Anthropometric data of the workers in both static and dynamic conditions at their work place. In today‟s hi-tech man-machine environment, man is the weakest link. Efforts are to be made to monitor, strengthen, support and protect him.
Keywords: Anthropometry; Production; Optimization; Operators; Productivity.
Developing Agility Systems in Supply Chains
by Gopinath Rathod, Vijaykumar Hiremath Hiremath, Vinod Puranik
Abstract: Supply Chain Management and agility are combined sources of competitiveness in the business world. There existed a need to apply axiomatic design principles of agility in supply chains. In this context, this paper reports an axiomatic model of agile system in supply chains design using process variables. A hierarchical structure has been developed to model the design process of agility in supply chains composed of functional requirements, design parameters, process variables. In the theory of axiomatic design, Process Variables are created by mapping the Design Parameters in the process domain. This article serves as an efficient guideline for the design process to clarify the tools, methods and resources of designing agility system in supply chains of an Indian relays manufacturing organization.rn
Keywords: Agile Manufacturing; Supply Chain Management; Axiomatic Design; Manufacturing Systems Design.
Application of Taguchi-Based Six Sigma Method to Reduce Defects in Green Sand Casting Process: A Case Study
by M.M. Ganganallimath, Suraj Dhondiram Patil, E.V. Gijo, Roopa B. Math, Vijaykumar Hiremath
Abstract: Six Sigma is a systematic method for process improvement. It relies on statistical and scientific methods to reduce the defect rates and achieve improved quality. A case study carried out for a green sand casting manufacturing company. Here Six Sigma methodology is used for the part: Bearing Bracket 3809. DMAIC (DefineMeasureAnalyseImproveControl) methodology along with Taguchi method is used to minimize the defects in the Bearing Bracket 3809. The major tools used in this work are the project charter, process map, statistical graph and cause-and-effect diagram. Use of design of experiments (DOE) and analysis of variance (ANOVA) techniques are combined to determine statistically the correlation of defects with the mould hardness, moisture content, green strength, permeability of sand, pouring rate and pouring temperature, and also to find their optimum values needed to reduce/eliminate the defects. The experimental results were statistically analyzed and modelled through Taguchi analysis. Based on the findings, the optimized process parameters are taken for experiment and better performance obtained in the production process was confirmed. The comparison between the existing and the proposed process has been attempted in this paper and the results have been discussed in detail.
Keywords: Six Sigma; DMAIC; Casting Defect; DOE; Taguchi Analysis; ANOVA.
A Fuzzy Optimization Approach for Software Reliability Estimation
by Boby John, Rajeshwar Kadadevaramath, Immanuel Edinbarough
Abstract: Many organizations today utilize information technology to gain competitive advantage. As a result, Information Technology industry has witnessed extraordinary growth. Many times the software companies compromise on software testing to avoid cost or schedule overrun. This might make the software unreliable. Hence it is imperative for the software firms to estimate the reliability of the software and ensure that their products are reliable. A wide range of models is available for reliability prediction. But there isn\'t a single model suitable for all software products. Hence it is necessary to identify the best-suited software reliability model for every software product. Unfortunately, the best fit model identification depends on the performance characteristics used for selecting the model. In this paper, the authors suggest a fuzzy optimization methodology to choose the best software reliability model based on multiple performance characteristics. Two case studies demonstrating the proposed methodology are also presented in the paper.
Keywords: non-homogeneous Poisson process; software reliability growth models; fuzzy optimization methodology; multiple response optimization.
Knowledge Management Key Factors: An Empirical Research on Small and Medium-sized Enterprises (SMEs) in Indonesia
by Didi Sundiman, ChienHsing Wu, Andi Mursidi, Surya Budi Putra Johan, Asmara Indahingwati
Abstract: The purpose of this paper is to explore the key factor that affects knowledge management (KM) process on Small Medium-sized Enterprise (SME) formed in developing countries SMEs that have very diverse cultures backgrounds. This paper undertakes a principle component analysis with oblimin rotation conducted to identify the key factors within the scales used. Five components were extracted in combination explained 72.27% of variance. Therefore, component 1 named Knowledge-preneur Leadership; component 2 - Techno-preneur Harmony; component 3 - Organizational K-Partnership; component 4 - Knowledge-preneur Employee; and component 5 - Socialization Palisade. This study also shows the importance of education level.
Keywords: Knowledge management; SME; Small Business; Indonesia; KM key factors.
Development of Green Channel Suppliers in Oil and Gas sector: A Kaizen approach
by Guruchannabasavaiah N G, Latha Shankar B.
Abstract: Defect reduction is one of the major actions required for any sort of industry for its continuous growth. Most of the time, industries may hurt a lot due to its repetitive rejections. One of the major loss to the company is rejections either it with suppliers or customers. Some problems rise due to un-established machining process, tools, raw materials, unskilled workers and measuring equipments etc. During production some components may be produced as per the drawing and some may be deviated due to the above said problems. During quality check, if the batch undergoes a sampling inspection, the samples taken might be good and the batch might be accepted but in assembly it would affect a lot. 100% inspection using metrological instruments also consumes lot of time and it is expensive. By continuously using the instruments, wear and tear may happen in instruments. To avoid all these, Kaizen would be the best and effective method which should be implemented at suppliers and customers base. This will also reduce the cost of inspection and the time required for to do so. With the help of Kaizen green channel is also possible at customer place such that the components received might directly use at the assembly without any inspection. Difference between the metrological instruments at customer and suppliers can also be eliminated. Kaizen is continuous improvement tool which has systematic procedure to identify the preventive actions. This paper presents, with the help of Kaizen, how the actions can be initiated and implemented at the suppliers place to reduce the defective percentage and make it as green channel supplier.
Keywords: Kaizen; Defect; Green channel; Supplier; Customer.
Special Issue on: Digital Innovation Information Systems in Business and Societal Challenges
Career choice in teaching among engineering graduates: A study of the Altruistic, Extrinsic and Intrinsic factors
by Sweta Bhattacharya, V. Raju
Abstract: The Indian higher education system is the third largest in the world producing immensely talented manpower, winning accolades all across the world. But the system faces faculty crunch majorly in the engineering education sector failing to attract this huge talent pool towards teaching professions. The study analyses the effect of Altruistic, Extrinsic and Intrinsic factors pertaining to the choice of teaching career using survey research based statistical analysis and Analytical Hierarchy Process. The results of AHP reveal Intrinsic factor as the highest ranked factor affecting teaching career decisions which is supported by the consistency ratio value (0.033<=0.10). The effect of age, gender and program of study is also studied which reveal that age and program of study has significant effect on the intrinsic factor. The paper finally recommends policy amendments relating to the intrinsic factor so that more students could be attracted towards teaching profession.
Keywords: Higher education systems; Decision making; MCDM; Career Choice; Teaching Career; Education Policies; AHP.
Structural Investigation of service supply chain: A social network analysis approach
by Sumit Sakhuja, Vipul Jain
Abstract: In this study the structure of a service supply chain is analyzed using social network analysis approach. Service supply chains consist of peoples and organizations connected in form of a network. The network is formed by the combination of ties between different players in the chain/network. These players are dependent upon each other and there exists flow of material or flow of information between players. Despite the longevity of the social networks perspective, the product supply chains as well as the supply chain in services are less explored from the social network perspective. A case study on supply chain of property purchase has been discussed in this paper that is analyzed with the help of social network analysis approach.
Keywords: service supply chain; social network analysis; systems; node level; network level.
Special Issue on: ICMHI 2018/ICHSM 2018 Seamless Ubiquitous Information Technologies and Applications in the Evolution of Medical Informatics
An Improved Authenticated Key Agreement Protocol with Privacy Protection for Mobile Healthcare Systems with Wearable Sensors
by Tian-Fu Lee, Yin-Yu Diao, Meriske Chen
Abstract: Authenticated key agreement schemes for mobile healthcare systems with wearable sensors enables patients wearable devices, the mobile terminal, healthcare staff and the healthcare service to authenticate each other and establish a secure communication channel. Recently, Li et al. proposed an authenticated key agreement scheme based on elliptic curve cryptography for mobile healthcare systems with wearable sensors. Although the scheme of Li et al. provides a complete solution for providing healthcare staff, wearable sensors, mobile users, controller nodes and the healthcare service provider with authentication and key agreement, their scheme still fails to realize mutual authentication, user privacy protection, perfect forward secrecy. This investigation discusses these limitations and presents an improved protocol based on the scheme of Li et al. The improved protocol not only avoids the limitations in previous approaches, but also increases the efficiency in computation.
Keywords: Authentication; key agreement; elliptic curve cryptography; privacy protection; mobile healthcare systems; wearable sensors.