In many real-life decision making (DM) situations, the available information is vague or imprecise. To adequately solve decision problems with vague or imprecise information, fuzzy set theory and aggregation operator theory have become powerful tools. In last three decades, DM theories and methods under fuzzy aggregation operator have been proposed and developed for effectively solving the DM problems and numerous applications have been reported in the literature. While various aggregation operators have been suggested and developed, there is a lack of research regarding systematic literature review and classification of study in this field. Regarding this, Web of Science database has been nominated and systematic and meta-analysis method called “PRISMA” has been proposed. Accordingly, a review of 312 published articles appearing in 33 popular journals related to fuzzy set theory, aggregation operator theory and DM approaches between July 1986 and June 2017 have been attained to reach a comprehensive review of DM methods and aggregation operator environment. Consequently, the selected published articles have been categorized by name of author(s), the publication year, technique, application area, country, research contribution and journals in which they appeared. The findings of this study found that, ordered weighted averaging (OWA) has been the highest frequently accessed more than other areas. This systematic review shows that the DM theories under fuzzy aggregation operator environment have received a great deal of interest from researchers and practitioners in many disciplines.

Purpose The main concern of this research is to examine the indirect effects servant leadership on organisational sustainability (OS) through creativity and psychological resilience in the hoteling sector in Malaysia.Design/methodology/approach A survey method based on a questionnaire was employed to gather data from 441 employees working in the hotel industry in Malaysia. The partial least squares technique, SmartPLS3.3.7, was employed to examine the hypotheses.Findings The result of the study found support for effect of servant leadership on creativity and psychological resilience. In addition, the effect of creativity and psychological resilience on OS was supported. Moreover, the mediation role of creativity and psychological resilience between servant leadership and organisational suitability was also supported by data.Originality/value This is a pioneering study that has combined human capital elements (i.e. servant leadership, creativity and psychological resilience) to examine their impacts on OS. Besides, this work has established comparatively new relationships, i.e. the impact of servant leadership on OS through the mediating role of creativity and psychological resilience. In addition, this study has developed relatively new link between psychological resilience and OS. In addition, it has confirmed the validity and reliability of servant leadership and OS at first and second orders.

The extended application of value stream mapping has more recently been clarified to fulfill the triple bottom line requirements in the manufacturing systems. Thus, there is a glaring lack of literature on this sustainable-oriented lean tool, among these minute studies, the research attention has mainly been given to the environmental issues, largely neglecting the societal aspects. To complement and support this narrow body of knowledge, this article is aimed at developing a social value stream mapping methodology, which we refer to as Socio-VSM, for visualizing and assessing the societal sustainability performance in the context of manufacturing. In doing so, it identified and incorporated crucial societal metrics into the proposed approach, which was made based on the conventional value stream mapping method. For validation purposes, a case study entailing a hard disc drive substrate manufacturing industry was applied for the documentation and reporting of results derived from the implementation of the proposed methodology and for testing and making conclusions about its effectiveness. It makes the valuable theoretical and practical contributions to narrow the gap on this long-neglected scope.INDEX TERMS Social value stream mapping, (Socio-VSM), societal metrics, lean manufacturing, sustainability.

Manufacturing companies are facing rapid and unanticipated changes in their business environment. Most of these companies need to find new strategies to remain competitive in the market. Therefore, the main purpose of this study is to integrate the Fuzzy Analytical Network Process (ANP) and VIKOR methods to evaluate the green agile factors and sub-factors in the dairy companies in Iran. To find the green agile factors and sub-factors, this study used the expert’s opinions and literature review. Data is collected from four dairy companies. The results of this study showed that the most important green agility factors are: trust-based relationship with suppliers, flexible production capacity, versatile workers, compliance with quality standards for a new product, and workers’ willingness to learn. In addition, the results indicated that the green agility organization is one of the strategies that help companies to stay in the market. To validate the results, this study used four methods, including TOPSIS, ARAS, EDAS, and MABAC. The necessity of a reaction to the increasing customer choices, environmental concerns, and competitiveness among manufacturers across the globe has engaged the industry to embrace innovative manufacturing strategies.

Gelatin is a protein substance that is widely used in food and pharmaceutical industries. Gelatin is mainly derived from bovine and porcine sources. Fish gelatin is becoming alternative source of gelatin due to concern on health issue and religious constraints. Numerous studies for identification of gelatin sources have been reported. In this study, Fourier transform infrared (FTIR) spectroscopy was used in combination with chemometrics fuzzy autocatalytic set (c-FACS) to distinguish between bovine, porcine and fish gelatins. The gelatin spectra at Amide and 1600–1000 cm−1 regions were analyzed using c-FACS and the results were compared to principal component analysis (PCA) and linear discriminant analysis (LDA). The results obtained from c-FACS method showed that each bovine, porcine and fish gelatin possessed dominant wavenumbers at 1470–1475 cm−1, 1444–1450 cm−1 and 1496–1500 cm−1 respectively, which represent their unique signatures. Furthermore, a clear distinction for porcine gelatin was observed in coordinated FACS. The c-FACS method is rigor and faster than PCA and LDA in differentiating the gelatin sources. The novel method promises at least another chemometrics method for FTIR related analysis and the possibilities for other applications are endless.