A novel mining system for criminal issues from a video file within cloud computing environment

This paper presents a description of a novel mining system which mines the different occurrences (instances) of the same object from a video file. The framework of the system consists of four steps: segmenting the video file into stable tracks, extracting objects and their features from the tracks, grouping these tracks into clusters based on their residing objects, and finally mining the instances of each object in the shared pool of configurable computing resources within cloud environment for more security. The paper also presents a critique and feedback for the system and proposes an idea to improve its performance

An efficient mathematical analysis for saving energy in WSN routing protocol

The issue of energy efficiency in wireless sensor networks (WSNs) is a prime consideration. Therefore, we propose an energy-saving scheme for use in wireless sensor networks and this the goal of this Research. The proposed protocol is a mixture of the low energy adaptive clustering hierarchy (LEACH) and mediation device (MD) protocols. It combines the advantages of both. The suggested protocol includes a mechanism for avoiding the collisions that exist in the MD protocols. Also, it allows the cluster head to be in sleep mode if there is no data to be sent. (In addition, MD Device in the proposed protocol will send ID to the node which will send the data to the cluster head that avoid collision signals that unfortunately happen in MD protocols and know which node sent data). This is in contrast to the LEACH protocol and MD protocol, where the cluster head is always switched on. Placing the cluster head in sleep mode contributes to reducing energy consumption.In the proposed scheme, clustering is used as in LEACH, but the cluster head is asleep by default. However, when a sensor node has data to send, it informs the MD, which then awakens the cluster head, making it ready for receiving sensor data. To evaluate the proposed scheme, we suggest a mathematical model that estimates the energy that the scheme saves as compared with LEACH. The results show that substantial energy saving is possible when the cluster head can be placed in sleep mode for a large percentage of time. Intuitively, this time percentage is higher when sensors have less data to send

Analysis and Design of Ultrasound Phased Arrays for Hyperthermia Cancer Therapy

272 p.Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1988.Acoustic phased arrays, which can be focused and steered electronically, offer an attractive alternative to the mechanically scanned focused ultrasound systems currently in use in hyperthermia cancer therapy. This thesis introduces a new method which will allow the direct synthesis, without scanning, of the more diffuse heating patterns useful in hyperthermia. Two quite different phased arrays are theoretically evaluated as hyperthermia applicators: a concentric ring array (CRA), and an N x N square-element array.The new synthesis method is based on the conjugate phase and amplitude matching techniques often used in optics. The field conjugation method (FCM), theoretically capable of tailoring the ultrasonic power deposition to virtually any tumor geometry without scanning, offers also the possibility of simultaneously focusing at different locations. The multiple focusing feature is combined with a new phasing technique involving angular phase rotation to eliminate hot spots that are often associated with the synthesis of annular patterns.A concentric-ring array was chosen because of its ability to directly produce annular patterns with a minimum number of array elements. A new method, based on combining the multiple focusing feature and a simple mechanical movement of the applicator, is proposed as a means of heating different size tumors at various depths.While a concentric-ring array is limited to the synthesis of annular and spot foci, an N x N square-element array is investigated as a means of synthesizing heating patterns with or without circular symmetry. Simulated heating patterns produced by the FCM are compared to those produced by electronic scanning. A method is also proposed to combine the FCM with electronic scanning to produce more complicated diffuse heating patterns. Moreover, an 8 x 8 square-element phased array prototype built and radiation patterns produced by single and multiple elements were measured, and agreed well with theoretically predicted patterns.To evaluate the different applicators, the steady-state bioheat transfer equation was solved using a finite difference technique. The simulated temperature distributions associated with different power deposition patterns demonstrate the potential of the field conjugation technique for the design of diffuse heating patterns for hyperthemia cancer therapy. (Abstract shortened with permission of author.)U of I OnlyRestricted to the U of I community idenfinitely during batch ingest of legacy ETD

Fuzzy logic system and mediation device node with grids for energy saving in wireless sensor network

Wireless Sensor Networks (WSN) are widely used in many applications. However, it still suffering from many issues such as packet loss, idle listening, high delay, and distance between nodes which all contribute to increase energy consumption and dissipation in WSN. In order to reduce this energy dissipation, this research concentrates on the Hierarchal routing Medium Access Control (MAC) protocols on how to solve the aforementioned problems. This research proposes the Grid Mediation Device (GMD) Node to minimize the idle listening of the active dura- tion for each node, the nodes are put to sleep mode for a reasonably long period of time and they wake up for a short time only to receive data. This behavior reduces the energy consumption for each sensor while minimizing the delay since the clusterheads will not wait for the sleeping nodes that have no data to send. Thereafter, the active clusterheads will be also put in the sleeping mode once they finish their data transmission. Simulation and mathematical model of the proposed GMD protocol have confirmed that the proposed GMD can improve the lifetime for all sensor nodes in the network, due to minimizing the idle listening time for each node. Moreover, adding Multi-levels of grids and Multi-level of MD node to the GMD protocol that will minimize the distance of sending data from each level cluster grid to another level until reach to the base station instead of sending data directly from any cluster to the base station, because the path between nodes and cluster head is not reliable and the nodes are far from each other in different grid. This research leads to reduce packets lost problem as well makes the network more reliable which is another contribution of this study. Lastly, this research adding Fuzzy logic system to the grids to minimize the problem of the distance between nodes as using three fuzzy logic criteria for each node will lead to choosing the optimal location and energy for each clusterhead and each node. The three pro- posed protocols have been compared to the Two-Dimensional Technique Based on Centre of Gravity and Energy (TDTCGE) protocol which is used two-dimensional technical centers (energy Centres and Gravity Centres) that will help to reduce the energy consumption and distances between nodes. Moreover, some of the proposed protocol derives better system performance such as end-to-end delay, throughput, lifetime, and energy saving. The Grid Mediation Device (GMD) protocol with Mathematical model has improved the lifetime around 88% as compared with the TDTCGE. In addition, The Fuzzy Logic grids (FLG) protocol saves more than 8% energy battery by adding the Fuzzy logic with the three criteria’s (Distance between nodes, distance to the basestation, residual energy) that will minimize the radius competitions between nodes and the clusterhead, and between the nodes and BS by 52% more than TDTCGE protocol. GMD Simulation protocol de- creases the mean of delay by 40% because of the sleeping mode, and which node has data that it has the turn to transmit data only. In addition, Multilevel GMD Proposed protocol reduces the packets lost by 65%. This Research Work improves the lifetime and saving more energy which is also more reliable and efficiency for the wireless sensor network