The International Institute of Information Technology, Bangalore commonly known as IIIT-B, is a graduate school in India. Founded in 1999, it offers Integrated M.Tech., M.Tech., M.S. and PhD programs in the field of Information Technology. In February 2005, IIIT-B was conferred Deemed University status under Section 3 of the University Grants Commission Act 1956. This was re-affirmed by the Tandon Committee report in October 2009, which gave of the report) IIIT-B a score of 41 .IIIT-Bangalore is promoted by the government of Karnataka and the IT industry. IIIT-B is managed by a Governing Body with S Gopalakrishnan , executive co-chairman, Infosys Ltd., as the chairperson. Wikipedia.
Mahapatra R.,International Institute of Information Technology Bangalore
Wireless Personal Communications | Year: 2017
Rapid progress of Internet of Things (IoT) increases the data traffic manifold, which also increases by the requirements of next generation users. Recent analysis predicts IoT technology market worth 883.55 Billion USD by 2022 and it is also predicted that mobile data traffic will grow more than 1000 times compared with the end of 2010 beyond 2020. In order to support high QoS requirements, ITU proposed IMT-2020, which is setting the stage for 5G wireless technologies with broadband data rate more than 5 Gbps, latency less than 1 ms even for high mobile user. Establishing and maintaining a successful wireless communication link among the users with simultaneously achieved all objectives becomes challenging and complex. The backhaul of nearly all wireless access networks is fiber-optic link. In order to support this tremendous amount of data, optical network has been evolved in respective way. These technological advancements and deployments are creating a new landscape in access networks, with an integration of wireless and optical technologies. As optical fiber has penetrated the access network and the latest wireless standards have demanded smaller, higher bandwidth cells, fiber connectivity has become key. This paper studies the involvement of optical backbone network technologies in support with the different 5G wireless access technologies. In particular, the development of optical networks will be discussed with advancement of wireless networks to support high performance communication and satisfy the user. © 2017 Springer Science+Business Media New York
Choudhury A.,International Institute of Information Technology Bangalore
ACM International Conference Proceeding Series | Year: 2017
Asynchronous reliable broadcast is a fundamental primitive in secure distributed computing. In an asynchronous system of n mutually distrusting parties with t of them being Byzantine corrupted, reliable broadcast is possible if and only if t < n/3. With t < n/3 there exists multi-valued asynchronous reliable broadcast protocol with optimal communication complexity of O(nℓ) bits for broadcasting ℓ-bit messages, provided ℓ is sufficiently large. In this work, we give a multi-valued asynchronous reliable broadcast protocol with t < n/2 and with communication complexity O(nℓ) bits for sufficiently large ℓ. To beat the lower bound of t < n/3, we deploy a non-equivocation mechanism, which can be instantiated using cryptography, along with a trusted hardware set-up. Such a mechanism prevents a corrupted party from sending conflicting messages to different (honest) parties. The applicability of non-equivocation mechanism has been investigated in the past to improve the fault-tolerance of secure distributed protocols in the asynchronous setting. This is the first work for deploying the nonequivocation mechanism to improve the communication complexity of asynchronous protocols. © 2017 ACM.
Rasipuram S.,International Institute of Information Technology Bangalore
ICMI 2016 - Proceedings of the 18th ACM International Conference on Multimodal Interaction | Year: 2016
Understanding people's behavior in social interactions is a very interesting problem in Social Computing. In this work, we automatically predict the communication skill of a person in various kinds of social interactions. We consider in particular, 1) Interview-based interactions -Asynchronous in-Terviews (web-based interview) Vs. synchronous interviews (regular face-To-face interviews) and 2) Non-interview based interactions - dyad and triad conversations (group discus- sions). We automatically extract multimodal cues related to verbal and non-verbal behavior content of the interaction. First, in interview-based interactions, we consider previously uninvestigated scenarios of comparing the participant's behavioral and perceptual changes in the two contexts. Second, we address different manifestations of communication skill in different settings (face-To-face interaction vs. group). Third, the non-interview based interactions also leads to answer research questions such as the relation between a good communicator and other group variables like dominance or leadership Finally we look at several attributes (manually annotated) and features/feature groups (automatically extracted) that predicts communication skill well in all set-Tings. © 2016 ACM.
Bansal R.K.,Department of National Defence |
Das S.K.,International Institute of Information Technology Bangalore
Water Resources Management | Year: 2011
This paper presents analytical solution of one-dimensional linearized Boussinesq equation characterizing unsteady groundwater flow in an unconfined aquifer, overlying an impervious downward sloping bed. At one end, the aquifer is in contact with a constant water level and at the other end; water level is rising exponentially from an adjoining stream. The aquifer also receives constant or cycle of time-varying vertical recharge. Analytical expressions for hydraulic head and flow rate in the aquifer are obtained by solving the seepage model using Laplace transform. The expressions derived here can explain sudden rise or very slow rise in the stream water related to sloping or horizontal beds and are represented under asymptotic case. Response of a short and long aquifer to the variation in bed slope, recharge rate and rise rate of the stream water is illustrated with the help of numerical examples. The sensitivity of the flow rate is also analyzed with respect to various parameters. © 2010 Springer Science+Business Media B.V.
Agency: European Commission | Branch: FP7 | Program: CP-IP | Phase: SSH-2007-1.2-01 | Award Amount: 3.33M | Year: 2009
INGINEUS addresses the evolution of global production networks (GPNs) into global innovation networks (GINs), and the impact this new process of global capitalism has on knowledge intensive activities in the EU. Global sourcing and assembly arrangements have been around for some three decades. They were principally based on efficiency considerations. Thus, multinational firms (MNCs) outsourced parts of production processes to manufacturers in Asia and other low-cost locations around the globe, while retaining the most knowledge intensive assets in the home country. This is no longer the case. MNCs increasingly scout the globe for locations where the right mix of local competences allows them to tap into sophisticated parts of value chains. This is not limited to advanced economies but more and more involves firms and regions in selected developing countries that position themselves as attractive knowledge-intensive locations in their own right. INGINEUS studies the determinants of this process and analyses its implications both for the EU and its emerging partner countries in the developing world. First, it looks at the changing strategies of MNCs and the conditions under which it is favourable for them to offshore R&D and other knowledge-intensive parts of their production process. Second, it focuses on the evolving local capabilities in selected developing countries that allow them to claim increasingly complex parts of global value chains at much higher levels of technological sophistication than hitherto. Third, it analyses the consequences of the formation of GINs in the global economy and differentiates among their static and dynamic effects on growth, employment, and competitiveness in the EU. Finally, based on these insights, it derives policy recommendations that would allow the EU to benefit from the positive features of this process while mitigating its adverse consequences.
Prasad A.S.,Alcatel - Lucent |
Rao S.,International Institute of Information Technology Bangalore
IEEE Transactions on Computers | Year: 2014
We present a cloud resource procurement approach which not only automates the selection of an appropriate cloud vendor but also implements dynamic pricing. Three possible mechanisms are suggested for cloud resource procurement: cloud-dominant strategy incentive compatible (C-DSIC), cloud-Bayesian incentive compatible (C-BIC), and cloud optimal (C-OPT). C-DSIC is dominant strategy incentive compatible, based on the VCG mechanism, and is a low-bid Vickrey auction. C-BIC is Bayesian incentive compatible, which achieves budget balance. C-BIC does not satisfy individual rationality. In C-DSIC and C-BIC, the cloud vendor who charges the lowest cost per unit QoS is declared the winner. In C-OPT, the cloud vendor with the least virtual cost is declared the winner. C-OPT overcomes the limitations of both C-DSIC and C-BIC. C-OPT is not only Bayesian incentive compatible, but also individually rational. Our experiments indicate that the resource procurement cost decreases with increase in number of cloud vendors irrespective of the mechanisms. We also propose a procurement module for a cloud broker which can implement C-DSIC, C-BIC, or C - OPT to perform resource procurement in a cloud computing context. A cloud broker with such a procurement module enables users to automate the choice of a cloud vendor among many with diverse offerings, and is also an essential first step toward implementing dynamic pricing in the cloud. © 2013 IEEE.
Srinivasa S.,International Institute of Information Technology Bangalore
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2012
In a community setting, operational knowledge or "knowledge that works," refers to knowledge elements that can be put to use. This can be contrasted with encyclopedic knowledge or "knowledge that tells" that sets the background shared mental model among members of a population. Given any community, large amounts of operational knowledge are routinely diffused through social connections. While current day social media catalyzes such diffusion, they are not primarily suited to capture and represent knowledge. This paper argues that operational knowledge aggregation is in some sense, the opposite of encyclopedic knowledge aggregation. The latter is a convergent process that aggregates different local views into a global view; while the former is a divergent process, where common knowledge gets segregated into several local worlds of utilitarian knowledge. If the community as a whole is coherent, these different worlds end up denoting different aspects of the community's dynamics. Local worlds are not independent of one another and characteristics of one local world affect characteristics of other local worlds. To capture this phenomenon, a data model called Many Worlds on a Frame (MWF) is proposed, that is detailed in this paper. © 2012 Springer-Verlag.
Das A.K.,International Institute of Information Technology Bangalore
Security and Communication Networks | Year: 2011
Key establishment in sensor networks is a challenging problem because of resource constraints of the sensors. Due to resource limitations and vulnerable to physical capture of the sensor nodes, the classical public-key routines are impractical in most sensor network architectures. In this paper, we propose a new random key pre-distribution scheme. Our scheme always defines a relationship between the ids of neighbor nodes and the keys possessed by those nodes while maintaining the required randomness in choice of keys. Our proposed scheme provides better security against node capture attack than the existing random key pre-distribution schemes. Moreover, it has better trade-off between communication overhead, network connectivity and security against node capture compared to the existing random key pre-distribution schemes. In addition, it supports dynamic node addition efficiently after initial deployment of the nodes in the network. © 2009 John Wiley & Sons, Ltd.
Barai M.,Indian Institute of Technology Kharagpur |
Sengupta S.,Indian Institute of Technology Kharagpur |
Biswas J.,International Institute of Information Technology Bangalore
IEEE Transactions on Power Electronics | Year: 2010
A high-frequency digital controller that includes an optimized analog-digital converter (ADC) with a novel formulation of digital error value based on target clock frequency and converter output voltage is presented in this paper. A programmable look-up table-based digital compensator is implemented for fast processing the feedback error. Limitations of a hybrid digital pulsewidth modulator (DPWM) at high frequency are addressed and solved by an edge-triggered logic. Support for process, voltage, and temperature variations is incorporated in the integrated design. Target clock frequency denotes the frequency of the signal which is driven by dynamic voltage scaling (DVS) processor and corresponds to the reference value of the regulated output voltage. This work realizes the classical digital controller design implementation of a target frequency to minimum required regulated voltage for DVS-enabled adaptive dc-dc converter. A synchronous buck converter of 1 MHz switching frequency and the proposed delay-line-based optimized ADC have been fabricated for realizing and verifying the complete digital controller on a field-programmable gate array-based closed-loop prototype. Experimental results are presented, which demonstrate the fast dynamic response achieved for target clock frequency in the range of 6-16 MHz, corresponding to the regulated output voltage range of 1.6-3.2 V. The complete design of digital controller has been implemented in 0.5 μm CMOS technology using Cadence and Synopsys tools. The active on-chip area of the proposed delay-line ADC, digital compensator, and edge-triggered hybrid DPWM are 0.08, 0.28, and 0.07 mm2respectively. © 2009 IEEE.
Ray P.K.,International Institute of Information Technology Bangalore |
Kishor N.,Motilal Nehru National Institute of Technology |
Mohanty S.R.,Motilal Nehru National Institute of Technology
IEEE Transactions on Smart Grid | Year: 2012
In this paper, comparative study between wavelet transform (WT) and S-transform (ST) based on extracted features for detection of islanding and power quality (PQ) disturbances in hybrid distributed generation (DG) system is presented. The hybrid system consists of DG resources like photovoltaic, fuel cell, and wind energy systems connected to grid. The negative sequence component of the voltage signal is used in islanding detection of these resources from the grid. Voltage signal extracted directly at the point of common coupling is considered for detection of PQ disturbances. Further, the effect of variation of grid impedances on islanding and PQ disturbances and effect of islanding on the coherency between the energy resources is also presented in this paper. The study for different scenarios of DG system is presented in the form of time-frequency analysis. The energy content and standard deviation of ST contour and WT signal is also reported in order to validate the graphical results. The results demonstrate the advantages of S-transform over WT in detection of islanding and different disturbances under noise-free as well as noisy scenarios. © 2010-2012 IEEE.