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8. Competitor Mining and Identification from Large Unstructured Datasets

Author

Ravi. V. Mante, Prashant Chatur, and Rani R. Raut

Subjects
business.industry, Computer science, media_common.quotation_subject, 05 social sciences, 02 engineering and technology, Competitor analysis, E-commerce, Machine learning, computer.software_genre, Purchasing, Product (business), Competition (economics), Identification (information), Web mining, 020204 information systems, 0502 economics and business, 0202 electrical engineering, electronic engineering, information engineering, 050211 marketing, Quality (business), Artificial intelligence, business, computer, media_common
Abstract

In the competitive world, We need to make our item more interesting, so customer get attracted and it will help us in competition. Here to take part in competition competitor should know about rivals and to know about competitors. Here we are using reviews of products. Most of the time customer share their experiences about purchasing things or products, So according to their experiences other customer learn and took their decisions. Reviews tells us about product quality and many more things. The main purpose of this paper is to find top-k competitors. For calculating competitors firstly we used four different algorithms. Out of these C-miner++ algorithm is better than naive, G-miner and C-miner. In case of C-miner++ algorithm computing time for calculating top-k competitor is less than rest three. So C-miner++ algorithm is the best algorithm for finding competitors. Our main aim is to show computing time for calculating top-k competitors using DE is less as compare to C-Miner and finding competitors more efficiently, so we used differential evaluation algorithm. We get a less computing time for calculating top- k competitors as compare to C-miner algorithm.

Published
2018

25. Reconfigurable Liquid Crystal Dielectric Image Line Leaky Wave Antenna at W-Band

Author

Henning Tesmer, Rani Razzouk, Ersin Polat, Dongwei Wang, and Rolf Jakoby

Subjects
Beam steering, dielectric image line, leaky wave antennas, liquid crystal, W-band, Telecommunication, TK5101-6720, Electric apparatus and materials. Electric circuits. Electric networks, TK452-454.4
Abstract

This paper presents a reconfigurable dielectric image line leaky wave antenna at W-band. Reconfigurability is achieved by applying bias to anisotropic liquid crystal (LC) filled into the antenna. Instead of separating RF components and DC-bias network by complex or space consuming methods, the bias electrodes are simultaneously used as radiation elements. In order to evaluate this concept, a non-reconfigurable antenna with isolated unit cells is compared to a reconfigurable antenna, which has its unit cells connected by a metallic line. The non-reconfigurable demonstrator shows gain of up to $\mathrm{18}$ dBi and can scan through broadside from −30$\mathrm{^{\circ }}$ to +10$\mathrm{^{\circ }}$ in the investigated frequency range from $75 \,\mathrm{G}\mathrm{Hz}\,\mathrm{to}\, 102 \,\mathrm{G}\mathrm{Hz}$. This frequency scanning sector can be shifted by $10\mathrm{^{\circ }}$ when utilizing the reconfigurable LC antenna, while gain of up to $15$ dBi is maintained. Since the bias electrodes are directly mounted on the image line, less than $50 \,\mathrm{V}$ is necessary to control the LC. The antenna is comparably easy to fabricate, and only one bias voltage is directly related to a steering angle, which can be advantageous compared to complex phased arrays with multiple LC phase shifters.

Published
2022
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28. An internet based RFID library management system

Author

Rani R. Joshi and A. Pravin Renold

Subjects
World Wide Web, Identification (information), business.product_category, Library management, Relation (database), business.industry, Computer science, Radio-frequency identification, The Internet, Object (computer science), Internet appliance, business, Electronic Product Code
Abstract

Radio Frequency IDentification (RFID) is the wireless non-contact system that uses radio-frequency waves to transfer data from a tag attached to an object, for the automatic identification and tracking. An internet based concept is incorporated with RFID technology to form an internet based application for the library management. The RFID reader Motorola MC9090 is used for the entire process which is carried inside the library. This reader is a compatible reader that can read any kind of tag of frequencies like Low, High & Ultra High. Every user and every book is provided with a RFID Tag which has a dedicated, unique EPC (Electronic Product Code) which is made in relation to the database for the further details. Internet concepts are put forward with the help of Internet of Things architectural layer. The idea of monitoring and sensing the library environment from a location and to identify the materials, books, CD's, etc present inside the library for easy access of the library which was observed to be the most common issue. In this paper the problems & issues faced in the library environment like locating the mis-placed or mis-shelved book or materials, reducing the manual work & ease access of the books are done and a solution is developed that could overcome these problems with the better enhanced work.

Published
2013

36. Three-level inverter fed induction motor.

Author

Urmila, B., Sheba Rani, R., Subbarayudu, B., and Raja Sekhar Goud, L.

Abstract

Multilevel inverters have gained interest in recent years in high-power medium-voltage industry. This paper considered the most popular structure among the transformer-less voltage source multilevel inverters, the diode-clamped inverter based on the neutral point converter. This paper use conventional switching sequence and optimum switching sequence of SVPWM technique. Simulation results presents comparison of conventional and optimized switching sequence three-level diode-clamped inverter fed induction motor for stator currents, electromagnetic torque and speed for constant modulation index. Simulation is carried out in MATLAB-Simulink software. [ABSTRACT FROM PUBLISHER]

Published
2012

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