spectrum sensing schemes for cognitive radio networks

The growing demand of wireless applications has put a lot of constraints on the usage of available radio spectrum which is limited and precious resource. Cognitive radio is a promising technology which provides a novel way to improve utilisation efficiency of available electromagnetic spectrum. Spectrum sensing used to detect the spectrum holes (underutilised bands of the spectrum) providing high spectral resolution capability. In this report, studied of spectrum sensing techniques is presented. The issues and challenges involved in implementation of spectrum sensing technique energy detection are discussed in detail. We implemented matched filter spectrum sensing technique and studied about cyclostationary detection in spectrum sensing .we implemented OFDM in spectrum sensing techniques as OFDM solves many problems in cognitive radio

Optimization of ZnO thin films for dye-sensitized solar cells applications

We present the fabrication and optimization of compact ZnO thin films prepared by sol-gel processing. There upon we employed these thin films as a photo-anode in a dye-sensitized solar cell using an anthracene derivative molecule

Provision of Relevant Results on web search Based on Browsing History

Different users submit a query to a web search engine with different needs. The general type of search engines follows the "one size fits all" model which is not flexible to individual users resulting in too many answers for the query.  In order to overcome this drawback, in this paper, we propose a framework for personalized web search which considers individual's interest introducing intelligence into the traditional web search and producing only relevant pages of user interest. This proposed method is simple and efficient which ensures quality suggestions as well as promises for effective and relevant information retrieval. The framework for personalized web search engine is based on user past browsing history. This context is then used to make the web search more personalized. The results are encouraging

Comparative study of surgical management of humeral shaft fractures with dynamic compression plate in Henry’s and Thompson’s approach in adults

Background: Fractures of the humeral shaft account for roughly 3% to 5% of all fractures. The predominant causes of humeral shaft fractures include simple falls or rotational injuries in the older population and higher energy mechanisms in the younger patients including motor vehicle accidents, assaults, fall from height and throwing injuries. Treatment options for humeral fractures vary according to the type of fracture, age group, bone density, soft tissue status and associated complications. Surgical management of shaft humerus fractures by plating can be done mainly through Thompson’s (posterior) approach and Henry’s (antero-lateral) approach.Methods: The study was conducted in patients treated for shaft humerus fracture at Adhichunchanagiri Institute of Medical Science, BG Nagara from the month of August 2014 to January 2016. Twenty patients diagnosed as shaft humerus fracture were taken into the study, all were undergone open reduction and internal fixation using dynamic compression plate in Thompson’s and Henry approach. Patients’ age more than 18 years were taken up for the study. Patients were followed up at 3 weeks, 6 weeks, 6 months.Results: The sample consisted of twenty shaft humerus fracture patients with 10 males and 10 females. The patients’ ages were more than 18 years where 13 cases (65%) between 26 to 55 years. Among these 20 patients, 10 involved the right side and 10 involved the left side. All patients achieved clinical and radiological union at 6 month follow up. According to Constant Murley Score, excellent result were found in 11 patients (55%), good in 2 patients (10%) and fair in 7 patients (35%). According to Mayo elbow performance index, 17 patients showed excellent outcome (85%) and 3 patients showed good outcome (15%).Conclusions:Dynamic compression plating is the best modality of management for the internal fixation of humeral shaft fractures. It is found that the fracture fixation of upper and middle one-third humerus in Henry’s approach is easier, lower one-third humeral fractures are not possible because the plate at the supracondylar ridge poses difficulty to fix. Fracture fixation of the lower one third and middle one third is easier in Thompson’s approach because of the flat surface of the bone and offers better plate contour.

Load Balancing Techniques for Efficient Traffic Management in Cloud Environment

Cloud computing is an internet based computing. This computing paradigm has enhanced the use of network where the capability of one node can be utilized by other node. Cloud service provides access on demand to distributive resources such as database, servers, software, infrastructure etc. in pay as you go basis. Load balancing is one of the vexing issues in distributed environment. Resources of service provider need to balance the load of client request. Load balancing is adapted in order to increase the resource consumption in Data centers that leads to enhance the overall performance of system achieving client satisfaction