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Purpose The study aims to explore the differences in transformational leadership’s (TL’s) influences on each aspect of innovation capability, namely, product innovation and process innovation. It also deepens understanding of the pathways and conditions to improve specific aspects of innovation capability by assessing the mediating role of knowledge sharing (KS) and moderating mechanism of perceived organizational support (POS). Design/methodology/approach The paper utilized structural equation modeling and cross-sectional design to test hypotheses in the proposed research model based on using data collected from 394 participants at 88 Chinese firms. Findings The findings indicate that KS mediates TL’s effects on innovation capabilities. In addition, the influences of TL and KS on specific aspects of innovation capability are different and depend on the extent of employees’ POS. Research limitations/implications Future studies should test mediating roles of knowledge management’s constituents and/or investigate the moderating roles of firm ownership form to increase the understanding of potential factors or key conditions that may have significant influences on a firm’s innovation capability. Practical implications The paper significantly contributes to increasing the understanding of the link between TL and specific aspects of innovation capability by highlighting the important role of stimulating KS and enhancing POS. Originality/value The paper provides useful information and valuable initiatives to increase leadership outcomes and firm’s capability for innovation.

Three new species of Polycarpaea from Vietnam, Polycarpaea vanphongensis V.T. Tran, H.T. Truong & N.V. Binh, Polycarpaea chungana V.T. Tran, H.T. Truong & N.V. Binh, Polycarpaea phuquocensis V.T. Tran, H.T. Truong & N.V. Binh are described and illustrated based on evidence of molecular sequence data from two markers (ITS1-5.8S-ITS2 and rps 16) and combined morphological characteristics. Polycarpaea vanphongensis is closely related to Polycarpaea gaudichaudi Gagnep., Polycarpaea arenaria (Lour.) Gagnep., Polycarpaea phuquocensis V.T. Tran, H.T. Truong & N.V. Binh but differs by its stem glabrous, leaf ovate to elliptic, glabrous, ovary oblong ovoid, base obtuse, apex attenuate, capsule oblong void, 3.8 mm long. Polycarpaea phuquocensis V.T. Tran, H.T. Truong & N.V. Binh differs from the three species mentioned above by its stem being densely villous, leaf spathulate, ciliate, ovary ovoid, base acute, apex obtuse, capsule ovoid, 1.2 mm long. Polycarpaea chungana V.T. Tran, H.T. Truong & N.V. Binh is most similar to Polycarpaea lignosa Gagnep., but differs in having leaf oblong or linear, sparse ciliate, sepal and petal apex deeply concaved or slightly bifid, ovary ovoid, ovoid, 0.8–1.0 mm long. Furthermore, the achievements of analysis using molecular data on the systematic positions of 7 other species are results that have not been in previous molecular analyses.

This paper deals with the existence and uniqueness of solutions for a class of state-dependent sweeping processes with constrained velocity in Hilbert spaces without using any compactness assumption, which is known to be an open problem. To overcome the difficulty, we introduce a new notion called hypomonotonicity-like of the normal cone to the moving set, which is satisfied by many important cases. Combining this latter notion with an adapted Moreau’s catching-up algorithm and a Cauchy technique, we obtain the strong convergence of approximate solutions to the unique solution, which is a fundamental property. Using standard tools from convex analysis, we show the equivalence between this implicit state-dependent sweeping processes and quasistatic evolution quasi-variational inequalities. As an application, we study the state-dependent quasistatic frictional contact problem involving viscoelastic materials with short memory in contact mechanics.

The epiphytic community of Laminaria hyperborea, dominated by red algae, is typically discarded during industrial processing despite its potential as a source of high-value natural products. This study aims to valorize this underutilized biomass by characterizing its secondary metabolites and evaluating the biological activities of its major bromophenols. A combined chromatographic workflow enabled the isolation and structural elucidation of five bromophenols (1–5), including one previously undescribed compound (5). Among these, compound 4 exhibited the strongest cytotoxicity against the acute myeloid leukemia (AML) cell line MOLM-13 (EC50 = 6.23 μM) and induced pronounced apoptotic features. When tested on two normal cell lines (NRK and H9c2) and in zebrafish larvae, it showed moderate toxicity at higher concentrations, indicating a reasonable selectivity window. In contrast, compound 5 was more toxic to normal cells than to MOLM-13 in vitro, while showing no acute toxicity in zebrafish; however, interpretations are preliminary due to compound purity. Bromophenols 1–4 were also tested for antioxidant activity, with 4 being the most potent (ABTS EC50 = 22.1 μM), although this did not translate into protection against doxorubicin-induced cardiotoxicity. Additionally, non-targeted UHPLC-QTOF MS/MS analysis tentatively identified nine additional bromophenols and provided an estimation of their origin species within the epiphytic assemblage.

PurposeDue to the vital role of frugal innovation (FI) for firms in developing and emerging economies, the purpose of this study is to investigate the effect of transformational leadership (TL) and knowledge sharing (KS) on FI of firms in supply chains. This study aims to bring deeper insight on the correlation among the constructs by exploring and analyzing the moderating effect of collaborative culture (CC) in the KS-FI relationship.Design/methodology/approachThe paper used the quantitative approach and structural equation modeling (SEM) to test the relationship among the latent factors in the proposed research model using data collected from 381 participants in 116 manufacturing and service firms.FindingsThe findings revealed that TL might be an important precursor to induce significant influences on FI directly or indirectly through its effect on active and passive KS processes in supply chains. In addition, the paper highlights the moderating role of CC in strengthening the impact of KS processes on FI.Research limitations/implicationsThe paper provides a valuable understanding and novel approach for managers to improve firms' FI capability through leadership practice and KS processes. The research findings support the idea that FI capability of firms in developing and emerging nations will be significantly enhanced if leaders are interested in practicing TL style and fostering a climate of collaboration within organization.Originality/valueThis study contributes to bridging research gaps in the literature and advancing the insights of how TL directly and indirectly fosters FI via mediating roles of active and passive KS processes in supply chains under the climate of collaboration.

Sanitary landfill is still considered as one of the most significant and least expensive methods of waste disposal. It is essential to consider environmental impacts while selecting a suitable landfill site. Thus, the site selection for sanitary landfill is a complex and time-consuming task needing an assessment of multiple criteria. In the present study, a decision support system (DSS) was prepared for selecting a landfill site in a growing urban region. This study involved two steps of analysis. The first step of analysis involved the application of spatial data to prepare the thematic maps and derive their weight. The second step employed a fuzzy multicriteria decision-making (FMCDM) technique for prioritizing the identified landfill sites. Thus, initially, the analytic hierarchy process (AHP) was used for weighting the selected criteria, while the fuzzy technique for order of preference by similarity to ideal solution (FTOPSIS) was applied for addressing the uncertainty associated with decision-making and prioritizing the most suitable site. A case study was conducted in the city of Memari Municipality. The main goal of this study was the initial evaluation and acquisition of landfill candidate sites by utilizing GIS and the following decision criteria: (1) environmental criteria consisting of surface water, groundwater, land elevation, land use land cover, distance from urban residence and buildup, and distance from sensitive places; and (2) socioeconomic criteria including distance from the road, population density, and land value. For preparing the final suitability map, the integration of GIS layers and AHP was used. On output, 7 suitable landfill sites were identified which were further ranked using FTOPSIS based on expert’s views. Finally, candidate site-7 and site-2 were selected as the most suitable for proposing new landfill sites in Memari Municipality. The results from this study showed that the integration of GIS with the MCDM technique can be highly applied for site suitability. The present study will be helpful to local planners and municipal authorities for proposing a planning protocol and suitable sites for sanitary landfill in the near future.

Purpose This paper aims to investigate the influence of transformational leadership (TL) and two aspects of trust (trust in a leader and trust among members, including two versions of each: “disclosure” and “reliance”) on knowledge collecting (KC) and knowledge donating (KD). Design/methodology/approach Structural equation modelling was used to test the effects of TL and aspects of trust on knowledge sharing (KS) processes using data collected from 336 participants at 35 large service firms. Findings The results showed that reliance-based trust in a leader (LR), disclosure-based trust in a leader (LD), reliance-based trust among members (MR) and disclosure-based trust among members (MD) act as mediators in the relationship between TL and KS processes. LR and MR have more significant effects on KD, whereas LD, MD and TL have more significant effects on KC. Research limitations/implications Future research could examine how personal characteristics (e.g. education level and working experiences) moderate the relationships between TL and KS processes. Practical implications From a practical perspective, the paper provides directors/managers an increased understanding of paths to success in KC and KD. Originality/value This paper provides theoretical initiatives on building employee trust and improving KS in the field of knowledge management. From a managerial perspective, this study identifies necessary factors for encouraging and promoting KS processes within an organization.

Purpose Given the important role of frugal innovation for firms in the developing and emerging countries, the purpose of this paper is to investigate the effect of transformational leadership (TL) on frugal innovation through the mediating roles of tacit and explicit knowledge sharing. Design/methodology/approach The paper used a quantitative research method and structural equation modeling to test the relationship among the latent factors based on a sample of 339 participants from 120 Vietnamese firms. Findings Findings reveal the significant impacts of TL on aspects of frugal innovation, namely, frugal functionality, frugal cost and frugal ecosystem. Moreover, the paper highlights the mediating roles of tacit and explicit knowledge sharing (KS) in the relationship between TL and frugal innovation in terms of frugal functionality and frugal cost. Research limitations/implications To bring a deeper understanding of the benefits and important role of knowledge resources, future research should investigate the potential mediating mechanisms of knowledge management processes in the relationship between specific leadership styles and frugal innovation. Practical implications The paper provides a valuable understanding and novel approach for managers and directors of firms in developing and emerging countries to improve their firms’ frugal innovation capability through leadership practice and knowledge resources. Originality/value This study contributes to bridging research gaps in the literature and advances the insights of how TL directly and indirectly fosters frugal innovation via mediating roles of tacit and explicit KS.

PurposeGiven the important role of innovation capability in helping firms to innovate and adapt to a fast-paced and unpredictable environment, the purpose of this study is to investigate and deepen knowledge of how transformational leadership affects radical and incremental innovation via the mediating role of positive psychological capital.Design/methodology/approachThe paper used structural equation modeling and cross-sectional design to test proposal hypotheses based on the empirical data collected from 379 participants in 89 manufacturing and service firms.FindingsThe results of this study revealed the positive and significant influence of transformational leadership on radical and incremental innovation. The findings highlighted the mediating role of individual psychological capital in the relationship between transformational leadership and aspects of innovation capability.Practical implicationsOrganizations should invest and stress on practicing transformational leadership style for their managers/directors to foster and enhance individual psychological capital and innovation capabilities.Originality/valueThe paper has extended theory of innovation management by discussing and highlighting the important role of transformational leadership and psychological capital in fostering specific aspects of innovation namely radical and incremental innovation.

Purpose Given the increasingly important role of knowledge capital on key outcomes and innovation capabilities of organizations, this paper aims to investigate the influences of knowledge-based human resource management (KHRM) practices on innovation capability of firms via mediating role of knowledge sharing (KS). This study also examines whether competitive intensity moderates the effects of KS behaviors on specific aspects of innovation capability, namely, product and process innovation. Design/methodology/approach This paper used structural equation modeling to examine the level of how KHRM practices and KS impact on two types of innovation capability, namely, product innovation and process innovation using data collected from 265 participants in 112 manufacturing and service firms in Vietnam. Findings The research findings confirm the mediating roles of KS behaviors between KHRM practices and two specific types of innovation. Besides, the paper first reveals the moderating role of competitive intensity in the relationships between KS and product innovation. The results underline the necessity of building a climate of KHRM practices to stimulate employees sharing knowledge, which, in turn, positively promotes innovation capabilities in an organization. Research limitations/implications Future research should investigate the impact of different forms of human resource management (HRM) practices on innovation via the mediating effects of certain aspects of KS to bring better understanding on the importance of HRM practices and knowledge resources in pursuing innovation competence. Practical implications This paper offers leaders a deeper understanding of potential effects of competitive intensity and environmental factors to promote innovation capabilities in their firms. Originality/value This paper has significant contributed to theoretical and practical initiatives on theory of HRM practices and knowledge management by showing different moderating and mediating mechanism thereby firms can follow to enhance innovation capability of firms in developing and emerging markets.