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From BRICS nations, India is the second largest tourism market after China in Asia. Technological revolution has added new dimensions to the way technologies being used in all the sectors. Also, the use of electronic gadgets leaves trail of data, which is very huge in size, this data (Big Data) is exploited by every sector for providing better services and gaining competitive edge. This trend grabbed the attention of researchers and industry for development of more optimized tools and techniques. There are many general frameworks proposed by industry and researchers for implementation of Big Data in industry but, there is no framework proposed for tourism sector. In this paper, the authors propose unified IT infrastructure framework named as tAdvisor for effective data analytics using Big Data Analytics approach for increasing productivity in tourism sector. Various challenges and issues related with the implementation of Big Data Analytics is also discussed in the paper.

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Cryptographic algorithms provide security against attacks during encryption of data. However, they are computationally intensive application and consume large amount of CPU time [1] and space at time of encryption. The goal of this paper is to compare the different encryption algorithm and to find space complexity of the encrypted and decrypted data by using complexities of encryption algorithm. . In this paper provide comparison between five most widely used algorithms. Based on following experimental it can be seen that TDES in general perform better than other algorithms. In this, find that how these algorithms better utilize for improving performances of algorithms in terms of space complexity. General TermsAlgorithms

This article describes how the tourism sector plays very important role in the social and economic growth of any country. Technologies like the internet and mobile technologies have changed the marketing strategy of the sector. It has been observed that business operators and the workforce employed in the tourism industry do not have sufficient knowledge, tools and/or strategy to implement technology correctly. Technology can be used in all the dimensions of tourism for gaining a competitive edge and providing a wide range of services to customers. For better customer satisfaction, the industry should know the major issues confronting tourism. Experiences shared by tourists on social media, i.e. Facebook, Twitter, Instagram and YouTube, can be used and analyzed to gain insight on customer needs. In this article, the authors propose a unified framework and have used tweets shared by tourists for the identification of major issues faced by tourism sectors. Identified issues are categorized into four main categories. The obtained results will help players of tourism sector for improving the services and growth of the sector.

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Background and Aims:Supraclavicular brachial plexus block is ideal for upper limb surgical procedures. Buprenorphine, an agonist antagonist opioid has been used as an adjunct to prolong analgesia. We aimed to evaluate the quality and duration of postoperative analgesia by addition of buprenorphine to local anesthetic solution.Material and Methods:A prospective, randomized, double-blind control study was conducted on 50 healthy patients of ASA Grade I/II of age group 20-70 years scheduled for orthopedic and reconstructive surgery of upper limb under supraclavicular brachial plexus block. Patients were allocated into two groups, 25 in each group viz.: Group B (buprenorphine group) received 20 ml 0.5% bupivacaine + 15 ml 2% lignocaine with adrenaline (1:200,000) + 4 ml normal saline + 1500 units hyaluronidase + 3 μg/kg buprenorphine diluted to 1 ml normal saline. Group C (control group) received 20 ml 0.5% bupivacaine + 15 ml 2% lignocaine with adrenaline (1:200,000) + 4 ml normal saline + 1500 units hyaluronidase + 1 ml normal saline. The parameters observed were onset and duration of sensory and motor block, quality and duration of analgesia and side-effects.Results:The mean duration of postoperative analgesia was significantly longer in Group B (16.04 ± 3.19 h) than in Group C (6.20 ± 0.74 h). There was no difference between two groups on mean onset of sensory block. The mean duration motor block was significantly longer in Group B (4.93 ± 0.94 h) than in Group C (2.25 ± 0.62 h) [P < 0.05]. The mean duration of sensory block was also significantly longer in Group B (5.71 ± 0.94 h) than in Group C (4.94 ± 0.70 h) with P < 0.05.Conclusion:Addition of 3 μg/kg buprenorphine to 0.5% bupivacaine for supraclavicular brachial plexus block prolonged duration of postoperative analgesia and sensory blockade without an increase in side effects.