Dichloromethane and methanol extracts of 13 Zingiberaceae species from the Alpinia, Costus and Zingiber genera were screened for antimicrobial and antioxidant activities. The antimicrobial activity of most of the extracts was antibacterial with only the methanol extract of Costus discolor showing very potent antifungal activity against only Aspergillus ochraceous (MID, 15.6 microg per disc). All the extracts showed strong antioxidant activity comparable with or higher that of alpha-tocopherol.

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Purpose The purpose of this paper is to investigate the moderating role of the personal values on the antecedents of managers’ intention to adopt Green information system (Green IS) utilising the norm activation theory and the Schwartz’s values system. Design/methodology/approach To examine the effects of the identified factors on the behavioural intention, the survey method was employed. The questionnaire was distributed targeting decision makers of companies in three industries – oil/gas/energy, transportation and manufacturing and construction. With 146 valid questionnaires in hand, the collected data were analysed using the partial least squares structural equation modelling technique. Findings The results revealed that moral obligation (personal norm) of managers influenced their intention to adopt Green IS. While the awareness of consequences and ascription of responsibility are influencing the intention, but the analyses revealed that they are mediated by the personal norm. The moderating role of personal values was further analysed and the results showed that the managers with more orientation towards self-transcendence values have higher intention to adopt Green IS. Originality/value This study serves as a call to the IS literature to incorporate values, beliefs, and norms into their model of individual-level decision making towards contemporary innovation adoption. By enriching the understanding of the influence of values and attitudinal factors on the decision-making process, the research model sheds light on how managers intend to diffuse IS initiatives in their organisations for the purpose of environmental sustainability.

Intrusion detection systems have become a key component in ensuring the safety of systems and networks. As networks grow in size and speed continues to increase, it is crucial that efficient scalable techniques should be developed for IDS systems. Signature based detection is the most extensively used threat detection technique for Intrusion Detection Systems (IDS). One of the foremost challenges for signaturebased IDS systems is how to keep up with large volume of incoming traffic when each packet needs to be compared with every signature in the database. When an IDS cannot keep up with the traffic flood, all it can do is to drop packets, therefore, may miss potential attacks. This paper proposes a new model called Dynamic Multi-Layer Signature based IDS using Mobile Agents, which can detect imminent threats withvery high success rate by dynamically and automatically creating and using small and efficient multiple databases, and at the same time, provide mechanism to update these small signature databases at regular intervals using Mobile Agents.

Data centers are the building blocks of IT business organizations providing the capabilities of centralized repository for storage, management, networking and dissemination of data. With the rapid increase in the capacity and size of data centers, there is a continuous increase in the demand for energy consumption. These data centers not only consume a tremendous amount of energy but are riddled with IT inefficiencies. All data center are plagued with thousands of servers as major components. These servers consume huge energy without performing useful work. In an average server environment, 30% of the servers are "dead" only consuming energy, without being properly utilized. Their utilization ratio is only 5 to 10 percent. This paper focuses on the use of an emerging technology called virtualization to achieve energy efficient data centers by providing a solution called server consolidation. It increases the utilization ratio up to 50% saving huge amount of energy. Server consolidation helps in implementing green data centers to ensure that IT infrastructure contributes as little as possible to the emission of green house gases, and helps to regain power and cooling capacity, recapture resilience and dramatically reducing energy costs and total cost of ownership.