Nowadays, people are using mobile phones for searching required data. But the major problem in mo... more Nowadays, people are using mobile phones for searching required data. But the major problem in mobile search is that the interaction between the users and search engines are limited by the small form factors of the mobile devices. In this research we propose a LPDS (Location Personalized Data Service) that captures the user’s preferences in the form of concepts by mining their click through data. User’s location are captured by using the GPS. The user preferences are organized in an ontology, which are used to adapt a personalized ranking function for rank adaptation of future search results. In our proposed design, the client collects and stores locally the click through data and the user privacy is maintained without sharing the user preferences with the server. For efficient search the user is provided with two modes thus making the search results more refined and efficient and the option of including the location is also provided. The main aim is to assist Smartphone users with ...
Problem statement: The growth in the needs of Internet applications that transmit massive amount ... more Problem statement: The growth in the needs of Internet applications that transmit massive amount of data has led to the emergence of Effective Queue Management. Approach: Queues were used to smooth spikes in incoming packet rates and to allow the router sufficient time for packet processing. When the waiting time is less a better queue management is ensured thereby resulting in increased flow in the queue. When the incoming packet rate was higher than the router's outgoing packet rate, the queue size was increased, eventually exceeding the available buffer space. With respect to TCP's RED queue management, the problem was that the buffer size was reduced to half and the packets were dropped abruptly. The congestion was detected early and the packets were dropped. The merit may be that congestion was detected early but the adverse effect was loss of packets. Results: The sender had to retransmit causing delay onto the network. This caused adverse effects on the network performance. In proposed system queue was extended whenever the number of packets present in the queue exceeds queue threshold. Packet drops were insignificantly even during network congestion. When the queue was continuously extended and if there was steady inflow of high volume of data, packet drop ratio was insignificant. Conclusions: Thus by the adoption of the proposed work, network throughput rose considerably thereby enabling effective data transfer. So it exhibits high bandwidth utilization, good throughput and processing time.
Three dimensional imaging is a common technique used in computer vision and radar imaging. The ma... more Three dimensional imaging is a common technique used in computer vision and radar imaging. The main challenges in 3D imaging is the noise content of the input image and degraded quality of the reconstructed image. In this paper a novel technique is introduced to get efficient conversion of 2D images to 3D. In the this technique after the standardization, the image it is filtered to reduce the noise content. Our method works on edge images obtained by applying the canny edge algorithm to the source image. In the transformation phase Standard Hough Transform (SHT) & Improved Hough Transform (IHT) transforms has been applied for the correctness and the precision of detecting lines. Image alignment and reconstruction consists of a synthesis of translations, rotation, and isotropic scaling. The proposed system is efficient in reconstructing the image and it ensures a clear boundary distinction and proper three dimensional view of the object.
ABSTRACT An environmental control system utilizing solar energy would generally be more cost- eff... more ABSTRACT An environmental control system utilizing solar energy would generally be more cost- effective if it were used to provide both heating and cooling requirements in the building it serves. Various solar powered heating systems have been tested extensively, but solar powered air-conditioners have received little more than short-term demonstration attention. This paper reviews past efforts in the field of solar powered cooling systems with the absorption pair of Ammonia-Water. A number of attempts have been made by researchers to improve the performance of the solar applied air-cooling subsystems. It is seen that the generator inlet temperature of the chiller is the most important parameter in the design and fabrication of a solar powered refrigeration and air conditioning system. While collector choice, system design and arrangement are other impacting factors for the system operation.
A wide deployment of Internet User Created Contents (UCC) and Online Digital Video (ODV) enabled ... more A wide deployment of Internet User Created Contents (UCC) and Online Digital Video (ODV) enabled the instant growth of online Video and programs which can be designated by Users. Licensed broadcasting companies, a undersized quantity of video and satellite broadcasting operators are the only source for providing contents. So automatically it becomes more challenging, time consuming to find an attractive video using the User Profile Recommendation. We propose the Online Video Recommendation system under a Distributed Computing Environment to assure the customer's requirement. Open opportunistic allows users to upload, share the videos. So it has a possibility of introducing polluted content into the system by spammers and promoters. We address the issue of detecting video spammers and promoters using Supervised Classification Algorithms. It uses a manually labelling which provides high cost. Clustering Hybrid algorithm overcomes this problem by focusing on the features of given video, which increases the chance of generating more rules to classify the videos.
Due to the recent trends in Internet, for exchange of information in the form of pure data traffi... more Due to the recent trends in Internet, for exchange of information in the form of pure data traffic and multimedia traffic, High-speed network is necessary. As there is a growing demand for high-speed networks, data transfer must take place without any congestion. In data networking and queueing theory, Network congestion occurs when a link or node is carrying so much data that its quality of service deteriorates. Typical effects include queueing delay, packet loss or the blocking of new connections. A consequence of these latter two is that incremental increases in offered load lead either only to small increase in network throughput, or to an actual reduction in network throughput. The Transmission Control Protocol (TCP) is one of the core protocols of the Internet Protocol Suite. TCP has not performed well on high-speed network because the standard TCP's algorithm for congestion control may cause thousands of packet drops in one Round Trip Time (RTT) and the window size is halved at the time of congestion. So the utilization of the bandwidth and throughput is minimized. The researchers developed different TCP variants to improve the performance of the congestion control algorithms in high-speed network. In this paper we propose a sequence of algorithms based on window adjustment, feedback mechanism and buffer management to overcome the limitations for high-speed network. The congestion control mechanism that we adopt starts with Queue Management, which enables to modify and control the transmission queue. The Window Adjustment Mechanism alters the Congestion window size based on the Input load. The Feedback mechanism renders the optimum load that can be serviced currently when congestion had taken place. Also the feedback information is notified to the sender. This solution to control the congestion in the network achieves maximum throughput and bandwidth utilization, with minimum delay and drop probability. The performance of the congestion window, throughput, utilization of the bandwidth, delay are analyzed and presented.
Three dimensional imaging is a common technique used in computer vision and radar imaging. The ma... more Three dimensional imaging is a common technique used in computer vision and radar imaging. The main challenges in 3D imaging is the noise content of the input image and degraded quality of the reconstructed image. In this paper a novel technique is introduced to get efficient conversion of 2D images to 3D. In the this technique after the standardization, the image it is filtered to reduce the noise content. Our method works on edge images obtained by applying the canny edge algorithm to the source image.
A wide deployment of Internet User Created Contents (UCC) and Online Digital Video (ODV) enabled ... more A wide deployment of Internet User Created Contents (UCC) and Online Digital Video (ODV) enabled the instant growth of online Video and programs which can be designated by Users. Licensed broadcasting companies, a undersized quantity of video and satellite broadcasting operators are the only source for providing contents. So automatically it becomes more challenging, time consuming to find an attractive video using the User Profile Recommendation. We propose the Online Video Recommendation system under a Distributed Computing Environment to assure the customer's requirement. Open opportunistic allows users to upload, share the videos. So it has a possibility of introducing polluted content into the system by spammers and promoters. We address the issue of detecting video spammers and promoters using Supervised Classification Algorithms. It uses a manually labelling which provides high cost. Clustering Hybrid algorithm overcomes this problem by focusing on the features of given video, which increases the chance of generating more rules to classify the videos.
Nowadays, people are using mobile phones for searching required data. But the major problem in mo... more Nowadays, people are using mobile phones for searching required data. But the major problem in mobile search is that the interaction between the users and search engines are limited by the small form factors of the mobile devices. In this research we propose a LPDS (Location Personalized Data Service) that captures the user's preferences in the form of concepts by mining their click through data. User's location are captured by using the GPS. The user preferences are organized in an ontology, which are used to adapt a personalized ranking function for rank adaptation of future search results. In our proposed design, the client collects and stores locally the click through data and the user privacy is maintained without sharing the user preferences with the server. For efficient search the user is provided with two modes thus making the search results more refined and efficient and the option of including the location is also provided. The main aim is to assist Smartphone users with the best suggestions in the results they look for taking advantage of the google's search result ranking GPS tracking and user preferences in an aim to reduce the number of click through the user makes in his Smartphone making Smartphone as smartest phone for its users.
Image segmentation is an image processing technique that divides an image into contiguous regions... more Image segmentation is an image processing technique that divides an image into contiguous regions or segments and typically used to locate objects and boundaries such as lines, curves, etc. in images. Regions are disjoint with some property for each region such as pixel intensity, grey level texture, or colour, etc., because a single point cannot be contained in two different regions. Image Segmentation techniques enable the design of automated segmentation techniques. Several such algorithms are proposed in the literature to simplify and/or change the representation of an image into something that is more meaningful and easier to analyse. In the proposed system, segmentation of images using Region Growing algorithm (based on seed pixels) is done in more than one processor. This paper explores several such algorithms which have been proved to perform on multi-categories of images specifically in medical images. This review paper also suggests interesting directions for further research.
Problem statement: The growth in the needs of Internet applications that transmit massive amount ... more Problem statement: The growth in the needs of Internet applications that transmit massive amount of data has led to the emergence of Effective Queue Management. Approach: Queues were used to smooth spikes in incoming packet rates and to allow the router sufficient time for packet processing. When the waiting time is less a better queue management is ensured thereby resulting in increased flow in the queue. When the incoming packet rate was higher than the router's outgoing packet rate, the queue size was increased, eventually exceeding the available buffer space. With respect to TCP's RED queue management, the problem was that the buffer size was reduced to half and the packets were dropped abruptly. The congestion was detected early and the packets were dropped. The merit may be that congestion was detected early but the adverse effect was loss of packets. Results:
Resource-constrained is a critical issue in Wireless Sensor Networks (WSNs) applications. Data ag... more Resource-constrained is a critical issue in Wireless Sensor Networks (WSNs) applications. Data aggregation is an efficient method to conserve energy by reducing packet transmissions and extend the network lifetime in WSNs. The total lifetime of the network is a major design factor for protocols used by WSNs. Routing protocols with low energy consumption are needed to prolong the lifetime of sensor network. In this paper, data aggregation based routing protocols for WSNs are analyzed. The routing protocols of structured architecture such as tree-based, cluster-based, chain-based and unstructured architecture such as structure-free are reviewed. The directions for future research are proposed in this area.
Due to the recent trends in Internet, for exchange of information in the form of pure data traffi... more Due to the recent trends in Internet, for exchange of information in the form of pure data traffic and multimedia traffic, High-speed network is necessary. As there is a growing demand for high-speed networks, data transfer must take place without any congestion. In data networking and queueing theory, Network congestion occurs when a link or node is carrying so much data that its quality of service deteriorates. Typical effects include queueing delay, packet loss or the blocking of new connections. A consequence of these latter two is that incremental increases in offered load lead either only to small increase in network throughput, or to an actual reduction in network throughput. The Transmission Control Protocol (TCP) is one of the core protocols of the Internet Protocol Suite. TCP has not performed well on high-speed network because the standard TCP's algorithm for congestion control may cause thousands of packet drops in one Round Trip Time (RTT) and the window size is halved at the time of congestion. So the utilization of the bandwidth and throughput is minimized. The researchers developed different TCP variants to improve the performance of the congestion control algorithms in high-speed network. In this paper we propose a sequence of algorithms based on window adjustment, feedback mechanism and buffer management to overcome the limitations for high-speed network. The congestion control mechanism that we adopt starts with Queue Management, which enables to modify and control the transmission queue. The Window Adjustment Mechanism alters the Congestion window size based on the Input load. The Feedback mechanism renders the optimum load that can be serviced currently when congestion had taken place. Also the feedback information is notified to the sender. This solution to control the congestion in the network achieves maximum throughput and bandwidth utilization, with minimum delay and drop probability. The performance of the congestion window, throughput, utilization of the bandwidth, delay are analyzed and presented.
Wireless Personal Area Networks (WPANs) -a network for interconnecting devices between Wireless S... more Wireless Personal Area Networks (WPANs) -a network for interconnecting devices between Wireless Sensor Network. The standard IEEE 802.15.4 intends to offer the fundamental lower network layers of a type of WPANs which focuses on low-cost, lowspeed ubiquitous communication between devices. The hidden device problem (HDP) results in inefficient data transmission and serious power consumption issues in WPAN. A Cross-layer scheme is used in order to overcome the hidden terminal problem. The address is detected in the Physical (PHY) layer and the detected device address is added to the hidden device address list (AL).In the Medium access (MAC) layer the hidden devices are scheduled to access the channel by exclusively allocating time slots in different sub periods. Transmission range is increased using the favorable energy efficiency. The security mechanism is used for data transmission between sensor nodes to avoid the extruder to access the data.
Nowadays, people are using mobile phones for searching required data. But the major problem in mo... more Nowadays, people are using mobile phones for searching required data. But the major problem in mobile search is that the interaction between the users and search engines are limited by the small form factors of the mobile devices. In this research we propose a LPDS (Location Personalized Data Service) that captures the user’s preferences in the form of concepts by mining their click through data. User’s location are captured by using the GPS. The user preferences are organized in an ontology, which are used to adapt a personalized ranking function for rank adaptation of future search results. In our proposed design, the client collects and stores locally the click through data and the user privacy is maintained without sharing the user preferences with the server. For efficient search the user is provided with two modes thus making the search results more refined and efficient and the option of including the location is also provided. The main aim is to assist Smartphone users with ...
Problem statement: The growth in the needs of Internet applications that transmit massive amount ... more Problem statement: The growth in the needs of Internet applications that transmit massive amount of data has led to the emergence of Effective Queue Management. Approach: Queues were used to smooth spikes in incoming packet rates and to allow the router sufficient time for packet processing. When the waiting time is less a better queue management is ensured thereby resulting in increased flow in the queue. When the incoming packet rate was higher than the router's outgoing packet rate, the queue size was increased, eventually exceeding the available buffer space. With respect to TCP's RED queue management, the problem was that the buffer size was reduced to half and the packets were dropped abruptly. The congestion was detected early and the packets were dropped. The merit may be that congestion was detected early but the adverse effect was loss of packets. Results: The sender had to retransmit causing delay onto the network. This caused adverse effects on the network performance. In proposed system queue was extended whenever the number of packets present in the queue exceeds queue threshold. Packet drops were insignificantly even during network congestion. When the queue was continuously extended and if there was steady inflow of high volume of data, packet drop ratio was insignificant. Conclusions: Thus by the adoption of the proposed work, network throughput rose considerably thereby enabling effective data transfer. So it exhibits high bandwidth utilization, good throughput and processing time.
Three dimensional imaging is a common technique used in computer vision and radar imaging. The ma... more Three dimensional imaging is a common technique used in computer vision and radar imaging. The main challenges in 3D imaging is the noise content of the input image and degraded quality of the reconstructed image. In this paper a novel technique is introduced to get efficient conversion of 2D images to 3D. In the this technique after the standardization, the image it is filtered to reduce the noise content. Our method works on edge images obtained by applying the canny edge algorithm to the source image. In the transformation phase Standard Hough Transform (SHT) & Improved Hough Transform (IHT) transforms has been applied for the correctness and the precision of detecting lines. Image alignment and reconstruction consists of a synthesis of translations, rotation, and isotropic scaling. The proposed system is efficient in reconstructing the image and it ensures a clear boundary distinction and proper three dimensional view of the object.
ABSTRACT An environmental control system utilizing solar energy would generally be more cost- eff... more ABSTRACT An environmental control system utilizing solar energy would generally be more cost- effective if it were used to provide both heating and cooling requirements in the building it serves. Various solar powered heating systems have been tested extensively, but solar powered air-conditioners have received little more than short-term demonstration attention. This paper reviews past efforts in the field of solar powered cooling systems with the absorption pair of Ammonia-Water. A number of attempts have been made by researchers to improve the performance of the solar applied air-cooling subsystems. It is seen that the generator inlet temperature of the chiller is the most important parameter in the design and fabrication of a solar powered refrigeration and air conditioning system. While collector choice, system design and arrangement are other impacting factors for the system operation.
A wide deployment of Internet User Created Contents (UCC) and Online Digital Video (ODV) enabled ... more A wide deployment of Internet User Created Contents (UCC) and Online Digital Video (ODV) enabled the instant growth of online Video and programs which can be designated by Users. Licensed broadcasting companies, a undersized quantity of video and satellite broadcasting operators are the only source for providing contents. So automatically it becomes more challenging, time consuming to find an attractive video using the User Profile Recommendation. We propose the Online Video Recommendation system under a Distributed Computing Environment to assure the customer's requirement. Open opportunistic allows users to upload, share the videos. So it has a possibility of introducing polluted content into the system by spammers and promoters. We address the issue of detecting video spammers and promoters using Supervised Classification Algorithms. It uses a manually labelling which provides high cost. Clustering Hybrid algorithm overcomes this problem by focusing on the features of given video, which increases the chance of generating more rules to classify the videos.
Due to the recent trends in Internet, for exchange of information in the form of pure data traffi... more Due to the recent trends in Internet, for exchange of information in the form of pure data traffic and multimedia traffic, High-speed network is necessary. As there is a growing demand for high-speed networks, data transfer must take place without any congestion. In data networking and queueing theory, Network congestion occurs when a link or node is carrying so much data that its quality of service deteriorates. Typical effects include queueing delay, packet loss or the blocking of new connections. A consequence of these latter two is that incremental increases in offered load lead either only to small increase in network throughput, or to an actual reduction in network throughput. The Transmission Control Protocol (TCP) is one of the core protocols of the Internet Protocol Suite. TCP has not performed well on high-speed network because the standard TCP's algorithm for congestion control may cause thousands of packet drops in one Round Trip Time (RTT) and the window size is halved at the time of congestion. So the utilization of the bandwidth and throughput is minimized. The researchers developed different TCP variants to improve the performance of the congestion control algorithms in high-speed network. In this paper we propose a sequence of algorithms based on window adjustment, feedback mechanism and buffer management to overcome the limitations for high-speed network. The congestion control mechanism that we adopt starts with Queue Management, which enables to modify and control the transmission queue. The Window Adjustment Mechanism alters the Congestion window size based on the Input load. The Feedback mechanism renders the optimum load that can be serviced currently when congestion had taken place. Also the feedback information is notified to the sender. This solution to control the congestion in the network achieves maximum throughput and bandwidth utilization, with minimum delay and drop probability. The performance of the congestion window, throughput, utilization of the bandwidth, delay are analyzed and presented.
Three dimensional imaging is a common technique used in computer vision and radar imaging. The ma... more Three dimensional imaging is a common technique used in computer vision and radar imaging. The main challenges in 3D imaging is the noise content of the input image and degraded quality of the reconstructed image. In this paper a novel technique is introduced to get efficient conversion of 2D images to 3D. In the this technique after the standardization, the image it is filtered to reduce the noise content. Our method works on edge images obtained by applying the canny edge algorithm to the source image.
A wide deployment of Internet User Created Contents (UCC) and Online Digital Video (ODV) enabled ... more A wide deployment of Internet User Created Contents (UCC) and Online Digital Video (ODV) enabled the instant growth of online Video and programs which can be designated by Users. Licensed broadcasting companies, a undersized quantity of video and satellite broadcasting operators are the only source for providing contents. So automatically it becomes more challenging, time consuming to find an attractive video using the User Profile Recommendation. We propose the Online Video Recommendation system under a Distributed Computing Environment to assure the customer's requirement. Open opportunistic allows users to upload, share the videos. So it has a possibility of introducing polluted content into the system by spammers and promoters. We address the issue of detecting video spammers and promoters using Supervised Classification Algorithms. It uses a manually labelling which provides high cost. Clustering Hybrid algorithm overcomes this problem by focusing on the features of given video, which increases the chance of generating more rules to classify the videos.
Nowadays, people are using mobile phones for searching required data. But the major problem in mo... more Nowadays, people are using mobile phones for searching required data. But the major problem in mobile search is that the interaction between the users and search engines are limited by the small form factors of the mobile devices. In this research we propose a LPDS (Location Personalized Data Service) that captures the user's preferences in the form of concepts by mining their click through data. User's location are captured by using the GPS. The user preferences are organized in an ontology, which are used to adapt a personalized ranking function for rank adaptation of future search results. In our proposed design, the client collects and stores locally the click through data and the user privacy is maintained without sharing the user preferences with the server. For efficient search the user is provided with two modes thus making the search results more refined and efficient and the option of including the location is also provided. The main aim is to assist Smartphone users with the best suggestions in the results they look for taking advantage of the google's search result ranking GPS tracking and user preferences in an aim to reduce the number of click through the user makes in his Smartphone making Smartphone as smartest phone for its users.
Image segmentation is an image processing technique that divides an image into contiguous regions... more Image segmentation is an image processing technique that divides an image into contiguous regions or segments and typically used to locate objects and boundaries such as lines, curves, etc. in images. Regions are disjoint with some property for each region such as pixel intensity, grey level texture, or colour, etc., because a single point cannot be contained in two different regions. Image Segmentation techniques enable the design of automated segmentation techniques. Several such algorithms are proposed in the literature to simplify and/or change the representation of an image into something that is more meaningful and easier to analyse. In the proposed system, segmentation of images using Region Growing algorithm (based on seed pixels) is done in more than one processor. This paper explores several such algorithms which have been proved to perform on multi-categories of images specifically in medical images. This review paper also suggests interesting directions for further research.
Problem statement: The growth in the needs of Internet applications that transmit massive amount ... more Problem statement: The growth in the needs of Internet applications that transmit massive amount of data has led to the emergence of Effective Queue Management. Approach: Queues were used to smooth spikes in incoming packet rates and to allow the router sufficient time for packet processing. When the waiting time is less a better queue management is ensured thereby resulting in increased flow in the queue. When the incoming packet rate was higher than the router's outgoing packet rate, the queue size was increased, eventually exceeding the available buffer space. With respect to TCP's RED queue management, the problem was that the buffer size was reduced to half and the packets were dropped abruptly. The congestion was detected early and the packets were dropped. The merit may be that congestion was detected early but the adverse effect was loss of packets. Results:
Resource-constrained is a critical issue in Wireless Sensor Networks (WSNs) applications. Data ag... more Resource-constrained is a critical issue in Wireless Sensor Networks (WSNs) applications. Data aggregation is an efficient method to conserve energy by reducing packet transmissions and extend the network lifetime in WSNs. The total lifetime of the network is a major design factor for protocols used by WSNs. Routing protocols with low energy consumption are needed to prolong the lifetime of sensor network. In this paper, data aggregation based routing protocols for WSNs are analyzed. The routing protocols of structured architecture such as tree-based, cluster-based, chain-based and unstructured architecture such as structure-free are reviewed. The directions for future research are proposed in this area.
Due to the recent trends in Internet, for exchange of information in the form of pure data traffi... more Due to the recent trends in Internet, for exchange of information in the form of pure data traffic and multimedia traffic, High-speed network is necessary. As there is a growing demand for high-speed networks, data transfer must take place without any congestion. In data networking and queueing theory, Network congestion occurs when a link or node is carrying so much data that its quality of service deteriorates. Typical effects include queueing delay, packet loss or the blocking of new connections. A consequence of these latter two is that incremental increases in offered load lead either only to small increase in network throughput, or to an actual reduction in network throughput. The Transmission Control Protocol (TCP) is one of the core protocols of the Internet Protocol Suite. TCP has not performed well on high-speed network because the standard TCP's algorithm for congestion control may cause thousands of packet drops in one Round Trip Time (RTT) and the window size is halved at the time of congestion. So the utilization of the bandwidth and throughput is minimized. The researchers developed different TCP variants to improve the performance of the congestion control algorithms in high-speed network. In this paper we propose a sequence of algorithms based on window adjustment, feedback mechanism and buffer management to overcome the limitations for high-speed network. The congestion control mechanism that we adopt starts with Queue Management, which enables to modify and control the transmission queue. The Window Adjustment Mechanism alters the Congestion window size based on the Input load. The Feedback mechanism renders the optimum load that can be serviced currently when congestion had taken place. Also the feedback information is notified to the sender. This solution to control the congestion in the network achieves maximum throughput and bandwidth utilization, with minimum delay and drop probability. The performance of the congestion window, throughput, utilization of the bandwidth, delay are analyzed and presented.
Wireless Personal Area Networks (WPANs) -a network for interconnecting devices between Wireless S... more Wireless Personal Area Networks (WPANs) -a network for interconnecting devices between Wireless Sensor Network. The standard IEEE 802.15.4 intends to offer the fundamental lower network layers of a type of WPANs which focuses on low-cost, lowspeed ubiquitous communication between devices. The hidden device problem (HDP) results in inefficient data transmission and serious power consumption issues in WPAN. A Cross-layer scheme is used in order to overcome the hidden terminal problem. The address is detected in the Physical (PHY) layer and the detected device address is added to the hidden device address list (AL).In the Medium access (MAC) layer the hidden devices are scheduled to access the channel by exclusively allocating time slots in different sub periods. Transmission range is increased using the favorable energy efficiency. The security mechanism is used for data transmission between sensor nodes to avoid the extruder to access the data.
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Papers by SHEELA THAVASI