In this paper, the authors introduce robust adaptive beamforming algorithm using novel antenna array geometry. The proposed array geometry consists of doubly crossed Uniform Linear Arrays (ULAs) which gives high accuracy beamforming and angular resolution as compared to conventional ULA. Furthermore, use of this geometry to adaptive beamforming algorithms namely LMS, NLMS and proposed Variable ...

Web robots are software programs which automatically traverse through hyperlink structure of Web to retrieve Web resources. Robots can be used for variety of tasks such as crawling and indexing information for search engines, offline browsing, shopping comparison and email collectors. Apart from that robots can also be used for some malicious purposes like sending ...

In this paper, the authors focuses on performance evaluation of reactive, proactive and hybrid MANET (Mobile Ad hoc NETwork) routing protocols, namely AODV, DSR, OLSR and GRP. OLSR is designed to work in a completely distributed manner and does not depend on any central entity. The AODV (Ad-hoc On demand Distance Vector) protocol consists of ...

The big data has become a popular topic because of enormous growth in the field of information technology. The distributed sensor network is the production of big data. A single sensor in a network may not give a significant data, but the data sensed by millions of sensors produce a big data. Big data gathering ...

Due to brisk growth of data storage in many internet service companies, there is always issue of regarding unstructured data storage which is generated in TeraBytes (TB) and PetaBytes (PB). Hadoop is always deal with the large amount of data Volume. Therefore, increase reliability and availability should be maintained. To gain the high availability characteristic ...

Completely Automated Public Turning Test to tell Computers and Humans Apart (CAPTCHA) is essentially used to prevent some kind of malicious programs from accessing the web resource automatically. In modern era web services is an essential business tool in e-commerce. The emergence of intelligent, complicated attacks similar to DoS (Denial of Service) attack formulates web ...

Wireless Sensor Networks (WSNs) are mainly powered by batteries. Due to limited energy storage capacity of a sensor battery, WSNs can usually remain operational only for a limited amount of time. To overcome this drawback joint mobile energy replenishment and data gathering is introduced. In the existing Joint Mobile energy Replenishment and Data Gathering (JMRDG) ...

One of important concept to design antenna is that antenna have small size. For mobile applications, one may want that antenna must have small size and must be capable to resonate at multiple frequency bands. There are number of techniques that can be useful for designing of antenna which include making use of fractal geometry, ...

Intelligent intrusion detection systems can only be built if there is availability of an effective data set. A data set with a sizable amount of quality data which mimics the real time can only help to train and test an intrusion detection system. The NSL-KDD data set is a refined version of its predecessor KDD’99 ...

People are in a world of increasing data, the day-by-day generation of data becomes very vast. The true of it lies in collecting these data, analyze and perform some computations to obtain some meaningful information. This meaningful information can be derived using some data mining tasks. In short they can call big data as a ...