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Detection of dot matrix printed documents using component analysis

Detection of dot matrix printed documents using component an...

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2010 International Conference on Advances in computer engineering, ACE 2010

作者： Sachdeva, Milan Garg, Ujjwal Department of Computer Engineering Netaji Subhas Institute Of Technology Delhi University New Delhi India

ISBN: (纸本)9780769540580

Document Quality Analysis is one of the most prominent areas of interest these days. It is used for managing of huge number of documents, detection of fraud document, recognizing identity documents etc. A lot of work has been done in the areas of coloured photograph recognition, improving the quality of documents and printing technology. However, to the best of our knowledge no work has been done to recognize the dot matrix prints from other high quality prints using principle component analysis. This is useful for automatically recognizing the text on a certain print. Post the detection of the quality of the print, recognition of the text can be easily done using specific algorithm for each quality. In this paper, the above objective is achieved by applying principle component analysis before and after smearing of the text on a particular print and then classifying it into dot matrix or non-dot matrix print. Moreover, this approach has also been compared with prior works related to classification and detection of print quality. © 2010 IEEE.

关键词： Image enhancement

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Prioritization of test case scenarios derived from activity diagram using genetic algorithm

Prioritization of test case scenarios derived from activity ...

引用

2010 International Conference on computer and Communication technology, ICCCT-2010

作者： Sabharwal, Sangeeta Sibal, Ritu Sharma, Chayanika Department of Computer Science and IT Netaji Subhas Institute of Technology Delhi India

ISBN: (纸本)9781424490349

Software testing involves identifying the test cases which discovers the errors in the program. However, the exhaustive testing is rarely impossible and very time consuming. In this paper, the software testing efficiency is optimized by identifying the critical path clusters. The test case scenarios are derived from the activity diagram and the testing efficiency is optimized by applying the genetic algorithm on the test data. The information flow metric is adopted in this work for calculating the information flow complexity associated with each node of activity diagram. ©2010 IEEE.

关键词： Software testing

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Adaptive channel allocation algorithm for video delivery

Adaptive channel allocation algorithm for video delivery

引用

International Conference on computer and Communication technology

作者： Kumar, Bijendra Chand, Satish Division of Computer Engineering Netaji Subhas Institute of Technology Dwarka New Delhi India

ISBN: (纸本)9781424490349

In recent years video-on-demand has emerged as one of the potential applications of multimedia. Among all multimedia applications, videos require the largest amount of bandwidth. Being a scarce resource, bandwidth utilization in efficient and feasible way always have been the main concern in video broadcasting schemes. In request based scheme [8], a unicast channel is initiated on the arrival of a request in an inter-arrival time of two adjacent multicast channels. If several requests arrive in a very short duration then each of them initiates a separate unicast channel, requiring large number of unicast channels. However, all these requests are fetching almost same video data. In proposed algorithm, we cluster all incoming requests in a short time span and serve them by a single unicast channel. The spanning duration is determined by the threshold of user's tolerable waiting time. In our adaptive channel allocation algorithm, we took a waiting time of at most one minute for users and found that for popular videos with arrival rate more than 5.5 per minute, a saving of around 90% in bandwidth can be obtained. For less popular videos bandwidth saving is≥ 40% The proposed scheme can precisely predict the waiting time for any user in case of unavailability of unicast channels, while there is no such mechanism in the request based scheme. Further, all the channels in the work are only unicast channels. ©2010 IEEE.

关键词： Bandwidth

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An efficient and secure routing protocol for wireless sensor networks using multicasting

An efficient and secure routing protocol for wireless sensor...

引用

IEEE International Conference on Green Computing and Communications

作者： Dhurandher, Sanjay K. Obaidat, Mohammad S. Jain, Gaurav Ganesh, Isha Mani Shashidhar, Vinay Division of Information Technology Netaji Subhas Institute of Technology University of Delhi New Delhi India Department of Computer Science and Software Engineering Monmouth University NJ United States Division of Computer Engineering Netaji Subhas Institute of Technology University of Delhi New Delhi India

ISBN: (纸本)9780769543314

Recent technological advancements in the field of nanotechnology have increased the computation power of the wireless nodes while adhering to the energy constraints. This has made the use of the Wireless Sensor Networks (WSNs), more widespread;used in applications such as area monitoring, industrial monitoring, vehicle detection or military monitoring. Sensor nodes have made it possible to collect data even in hostile environments, but because of the severe security and energy constraints faced by sensor networks, their deployment on a large scale is still a tricky job. A secure energy efficient routing algorithm is thus the need of the hour. SPIN, Sensor Protocol for Information via Negotiation, is one of the widely used energy efficient routing protocol in WSNs that completely ignores the security aspect. This paper involves proposing an alternate routing protocol, MS-SPIN, which incorporates the best features of SPIN while also addressing the security issue. The implementation of MS-SPIN in NS2 has shown that, for a larger number of nodes, its energy performance characteristics are comparable to those of SPIN while providing security features. © 2010 IEEE.

关键词： Sensor nodes

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Link stability based geocasting model for underwater sensor networks 10

Link stability based geocasting model for underwater sensor ...

引用

International Conference and Workshop on Emerging Trends in technology 2010, ICWET 2010

作者： Dhurandher, S.K. Gupta, M. Division of InformationTechnology Netaji Subhas Institute of Technolog University of Delhi New Delhi India Division of Computer Engineering Netaji Subhas Institute of Technology University of Delhi New Delhi India

ISBN: (纸本)9781605588124

This paper presents a Geocast technique for underwater sensor networks. The model named as Routing and Multicast Tree based Geocasting (RMTG) [1] has been designed for underwater sensor networks. In our previous work [1] we proposed a theoretical model for underwater geocasting that uses greedy forwarding and previous hop handshaking to route the packets towards the geocast region and further disseminates the data within the geocast region by creating a multicast shortest path tree. In this paper we present the modified RMTG algorithm and incorporate the various link broken scenarios along with their solutions. This model provides an efficient distribution of data in the geocast region in terms of node mobility handling, lesser memory utilization, lesser calculations and a better end to end latency. In addition to this the presented model does not use the flooding technique to deliver the packets inside the geocast region that is used in most of the geocasting techniques. Copyright 2010 ACM.

关键词： Trees (mathematics)

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Predictive multi-hop stable routing in vehicular ad hoc networks

Predictive multi-hop stable routing in vehicular ad hoc netw...

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2010 ACS/IEEE International Conference on computer Systems and Applications, AICCSA 2010

作者： Dhurandher, Sanjay K. Obaidat, Mohammad S. Jindal, Pulkit Chavli, Rajneesh Valecha, Sanchit Division of IT Netaji Subhas Institute of Technology University of Delhi New Delhi India Department of CS and SE Monmouth University NJ United States Division of Computer Engineering Netaji Subhas Institute of Technology University of Delhi New Delhi India

ISBN: (纸本)9781424477159

The past few years have observed vehicular networks becoming increasingly important in order to exchange information between stationary or moving vehicles. The information exchanged can range from warning messages in case of accidents that have occurred on the road and traffic jams to guiding the vehicles about the most efficient path to reach their destination. The biggest challenge, a vehicular network routing protocol faces, is providing a stable packet delivery mechanism. The proposed PMH protocol aims at providing a high packet delivery ratio by selecting each next node (vehicle) in the path from the source to the destination based on a parameter called the Disconnection Probability Metric (DPM). The DPM mainly represents the link breakage probability between nodes and the node with the least DPM is selected as the next node. Moreover, the PMH protocol also calculates the predicted link lifetime based on which it initiates the route selection algorithm before the weakest link actually breaks. This mechanism further enhances the usefulness of the algorithm as there is lesser control overhead to overcome link breakage.

关键词： Vehicles

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A reactive optimized link state routing protocol for mobile ad hoc networks

A reactive optimized link state routing protocol for mobile ...

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2010 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2010

作者： Dhurandher, Sanjay K. Obaidat, Mohammad S. Gupta, Mukta Division of IT Netaji Subhas Institute of Technology University of Delhi New Delhi India Department of CS and SE Monmouth University NJ United States Division of Computer Engineering Netaji Subhas Institute of Technology University of Delhi New Delhi India

ISBN: (纸本)9781424481576

Major constraints to be kept in mind while designing a routing protocol for ad hoc networks are battery power consumption, congestion control, time delay and the transmission range of the nodes. In this paper, we aim to develop an energy efficient and angular routing protocol, named Efficient Reactive and Angular - Optimized Link State Routing (ERA-OLSR). ERA-OLSR is an enhanced protocol designed over the well known Optimized Link State Routing (OLSR) [1]. ERA-OLSR is a reactive protocol which omits the use of routing table from OLSR and decides the next hop on the basis of angular concept. The proposed protocol has been compared with well established reactive protocols namely Ad-hoc On Demand Distance Vector Routing (AODV) [2] and Dynamic Source Routing (DSR) [3, 4]. The results achieved after implementing the proposed protocol establishes the fact that ERA-OLSR shows a better performance than both AODV and DSR in terms of End-to-end delay and Average Energy Consumption during the simulation. ©2010 IEEE.

关键词： Routing protocols

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Folding links is hard 10

Folding links is hard

引用

10th International Conference on Computational Science and Its Applications, ICCSA 2010

作者： Behoora, Ishan Department of Manufacturing and Automation Engineering Netaji Subhas Institute of Technology Dwarka New Delhi India

ISBN: (纸本)9780769539997

The ruler folding problem asks: Given a set of n line segment links attached at their end points with rotating joints. Find a minimum length folding of this chain of links along a line. In this paper, we provide an improved approximation for the problem if the longest link is significantly larger than the rest. We then consider generalizations to trees of links and instances containing cycles of links. We provide the first fully polynomial time approximation scheme (FPTAS) for the tree variant and prove the inapproximability of cycle variants. Lastly, we consider the area optimizaton problem, of folding the links to achieve minimum area within minimum width. We prove the problem and any multiplicative approximation to be NP-hard and also prove the impossibility of any additive polynomial time approximation schemes (PTAS). © 2010 IEEE.

关键词： Polynomial approximation

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A novel geocast technique with hole detection in underwater sensor networks

A novel geocast technique with hole detection in underwater ...

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2010 ACS/IEEE International Conference on computer Systems and Applications, AICCSA 2010

作者： Dhurandher, Sanjay K. Obaidat, Mohammad S. Gupta, Megha Division of InformationTechnology Netaji Subhas Institute of Technology University of Delhi New Delhi India SCS Department of CS and SE Monmouth University NJ United States Division of Computer Engineering Netaji Subhas Institute of Technology University of Delhi New Delhi India

ISBN: (纸本)9781424477159

Most of the work on geocasting has been done for mobile ad-hoc networks and vehicular ad-hoc networks. This paper presents a novel Geocast technique with the hole detection in the geocast region for underwater environment. The proposed model named as Routing and Multicast Tree based Geocasting (RMTG) has been designed for underwater sensor networks. Here we propose a theoretical model for underwater geocasting RMTG that uses greedy forwarding and previous hop handshaking to route the packets towards the geocast region. This technique further disseminates the data within the geocast region by creating a multicast shortest path tree. The technique also proposes a method of hole detection inside the geocast region and a virtual area based routing around the boundaries of the geocast region to reach the geocast region from opposite side. This model provides an efficient geocast technique in terms of node mobility handling, lesser memory utilization, lesser calculations and a better end to end latency. In addition to this the proposed model does not use flooding inside the geocast region that is used in most of the geocasting techniques and also for guaranteed data delivery inside the geocast region, the proposed model does not use the planarization graph concepts.

关键词： Vehicular ad hoc networks

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Improved web precision: An interplay of proximity heuristics and semantic association of query-terms

Improved web precision: An interplay of proximity heuristics...

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作者： Kumar, Akshi Bhatia, M.P.S. Dept. of Computer Engineering Delhi Technological University India Dept. of Computer Engineering Netaji Subhas Institute of Technology University of Delhi India

ISBN: (纸本)9783642122132

This paper expounds a method to improve the precision of Web retrieval based on proximity and semantic association of terms for a multi-term query. We implement the three proximity measures: first appearance term distance (FTD), minimum term distance (MTD), and local occurrence density (LOD);and study the effectiveness of these measures from the perspective of semantic association of query terms. The experimental evaluation show that for the topic modifying type query terms, the MTD method has a remarkable effect on improving Web retrieval precision and for the topic collocating type query terms the LOD method has a remarkable effect on improving Web retrieval precision. © 2010 Springer-Verlag Berlin Heidelberg.

关键词： Semantics

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