Plurality in environmental supply chain mechanisms: differential effects on triple bottom line outcomes

Purpose: The environmental management of supply chains has become increasingly relevant in the recent era. Extant research proposes two main forms of mechanisms – collaboration and evaluation – for environmental supply chain management. Despite the wide use of these mechanisms and the empirical insight into the fact that they could be adopted simultaneously, it is unknown if, and, at which levels, environmental collaboration (EC) and environmental evaluation (EE) could be complementary or substitutionary in nature. Therefore, the purpose of this paper is to gain a clear understanding into the plural forms of these mechanisms. Design/methodology/approach: The transaction cost economics and relational exchange theory are used to ground the research hypotheses. The results are based on survey data collected from 145 US manufacturing firms. The authors employ polynomial regression as well as the response surface methodology to test the proposed hypotheses. Findings: The results suggest that EC and EE can have an intriguing effect depending on the outcome measure. Specifically, the authors find the effects in the economic and the environmental/social domains to be significantly different. Originality/value: While scholars acknowledge that collaboration and evaluation could act as complements, extant research does not propose and test models that specifically capture complementary and substitutionary nature of these mechanisms. Accordingly, the study makes the first attempt to empirically test for the effects of the simultaneous pursuit of EC and EE

On the Maturity of the MIS Research Field

Researchers benefit considerably from understanding the developments in their field, especially in a relatively young field like MIS. The difficulties of identity and maturity in MIS field are exacerbated by rapidly changing technology and by the eclectic, inter-disciplinary nature of the field. To help clarify the nature of the MIS field and its developments, a stream of studies has examined the emerging pattern of research activities in the field (Culnan (1986), Culnan and Swanson (1986), Farhoomand (1987), Hamilton and Ives (1982), Vogel and Wetherbe (1984), Gorla (1989)). Most of these studies concur that MIS field of research has not made very significant progress as a scientific discipline, and is devoid of unique body of knowledge. At the present stage of the field’s development these previous studies provide the opportunity for self-examination which should propel research more directly. Most of the studies assessing the maturity of MIS field considered articles published in 80’s. As there is little research with recent MIS articles, we intend to evaluate MIS research field using MIS articles published during 1986 – 1995. In this research, we use three desirable characteristics a mature field should demonstrate: number of references per MIS article, immediacy factor of citations, and proportion of references to other disciplines

The architecture of coopetition: strategic intent, ambidextrous managers, and knowledge sharing

The study investigates the significance of strategic intent, manager's ambidexterity, and knowledge sharing routines for firms in their quest to pursue coopetition. We utilize the resource-based view and the dynamic capabilities theory to ground our hypotheses. We test the hypotheses using the data collected from 313 firms that engage in coopetition relationships through an online survey. The findings forward knowledge sharing and ambidextrous managers as intervening variables, in that when complemented with knowledge sharing, a firm's strategic intent could better guide the firm's managers to pursue coopetition successfully. Findings further advocate that knowledge sharing complements to enable the relationship between a firm's strategic intent and its ambidextrous managers, as well as the relationship between strategic intent and coopetition. Furthermore, results also indicate that ambidextrous managers, with a skillset of a combination of exploration and exploitation, are positively associated to coopetition. Overall, the findings make important theoretical as well as empirical contributions to the coopetition and strategic alliance literature

A stochastic programming model for an energy planning problem: formulation, solution method and application

The paper investigates national/regional power generation expansion planning for medium/long-term analysis in the presence of electricity demand uncertainty. A two-stage stochastic programming is designed to determine the optimal mix of energy supply sources with the aim to minimise the expected total cost of electricity generation considering the total carbon dioxide emissions produced by the power plants. Compared to models available in the extant literature, the proposed stochastic generation expansion model is constructed based on sets of feasible slots (schedules) of existing and potential power plants. To reduce the total emissions produced, two approaches are applied where the first one is performed by introducing emission costs to penalise the total emissions produced. The second approach transforms the stochastic model into a multi-objective problem using the ϵ-constraint method for producing the Pareto optimal solutions. As the proposed stochastic energy problem is challenging to solve, a technique that decomposes the problem into a set of smaller problems is designed to obtain good solutions within an acceptable computational time. The practical use of the proposed model has been assessed through application to the regional power system in Indonesia. The computational experiments show that the proposed methodology runs well and the results of the model may also be used to provide directions/guidance for Indonesian government on which power plants/technologies are most feasible to be built in the future

Antimicrobial activity of some actinomycetes from Western Ghats of Tamil Nadu, India

Introduction: Microbial diseases are increasing year by year and they are becoming a big threat to public health. There are more than 200 known diseases transmitted by bacteria, fungi, viruses, prions, rickettsia and other microbes to humans. The emergence of drug resistance to chemical drugs is the biggest threat in controlling human pathogens. Hence novel antimicrobial agents from actinomycetes are timely needed for the control of several human pathogens.Aim: The aim was to find some actinomycetes with antimicrobial metabolites.Methods: Soil samples were collected from Nilgiris district in Western Ghats of Tamil Nadu, India. Actinomycetes were isolated using serial dilution and plating techniques on actinomycetes isolation agar. Streptomycin and ketoconazole (25 lg/disc) were used as reference controls. The active strains were identified by 16S rRNA and phylogenetic tree was constructed; the sequences were submitted in the GenBank.Results: Totally 106 actinomycete strains were isolated and cross streaked against various human microbial pathogens. Only 44 (41.50%) exhibited good antimicrobial activity against different pathogenic microbes. Five isolates (FMS-20, TGH-30, TGH-31, TGH-31-1 and IS-4) were chosen for secondary screening using filtrate. Among them FMS-20 filtrate showed good inhibition on the 16th day against all tested microbial pathogens. Further the intracellular methanol extract of FMS- 20 showed maximum zone of inhibition against A. brasiliensis (22 mm) at 5 mg/disc. Similarly the extracellular ethyl acetate extract of FMS-20 showed maximum zone of inhibition against B. subtilis (25 mm).Conclusions: The present work revealed that, among 106 actinomycetes screened, Streptomyces rimosus (FMS-20) (Accession No-KT827106) showed promising antimicrobial activity against all the tested human microbial pathogens.Keywords: Streptomyces rimosus; Antimicrobial activity; Disc diffusion; Zone of inhibitio

Purification, characterization and utilization of polysaccharide of Araucaria heterophylla gum for the synthesis of curcumin loaded nanocarrier

In this study, gum of Araucaria heterophylla was collected. The collected gum was subjected for extraction of polysaccharide using solvent extraction system. Thus, extracted polysaccharide was further purified using solvent method and was characterized using UV-Vis spectroscopy, Phenol sulfuric acid assay, FTIR, TGA, TLC and GC-MS. The gum derived polysaccharide was found to have the following sugars Rhamnose, Allose, Glucosinolate, Threose, Idosan, Galactose and Arabinose. The extracted polysaccharide was tested for various in-vitro bioactive studies such as antibacterial activity, antioxidant activity and anticancer activity. The polysaccharide was found to have antioxidant and anticancer activity. Further, the polysaccharide was subjected for carboxymethylation to favor the nanocarrier synthesis, where it was chelated using Sodium Tri Meta Phosphate (STMP) to form nanocarriers. The nanocarriers so formed were loaded with curcumin and were characterized using FTIR, SEM, EDX and AFM. Both the loaded and unloaded nanocarriers were studied for its in-vitro cytotoxic effect against the MCF7 human breast cancer cell lines. The nanocarriers were found to deliver the drug efficiently against the cancer cell line used in this study

Offshoring innovation: an empirical investigation of dyadic complementarity within SMEs

Despite scholarly agreement that complementary capabilities are essential to successful collaborations, little is known about how small and medium-sized enterprises (SMEs) manage collaborative innovation through offshoring. Besides, the innovation management literature remains generally silent about when supplier joint actions could work in enhancing offshoring innovation (OI) performance. The purpose of this study is twofold. First, we aim to delineate why supplier's asset specificity and goal compatibility predict supplier's complimentary capabilities in OI. Second, we empirically explore the role of supplier joint actions in enhancing OI performance. Based on data collected from 200 SMEs having active OI relationships spanning four developed European countries, our results propose that supplier's complementary capabilities mediate the relationship between critical relational antecedents (supplier's asset specificity and goal compatibility) and OI performance. It should be noted, however, that despite their incentivising power, supplier joint actions can be a “double-edged sword” in SMEs’ OI relationships