Using self-optimization techniques is the only viable solution for increasing the efficiency in next generation mobile networks. The goal of proposing a self-optimization model is to maximize the network efficiency and increase the quality of services provided to microcell and femto-cell users, considering the limited resources in radio access networks. To increase the model efficiency, we applied the big data technique for analyzing data and increasing the accuracy of the decision-making process. Based on the meaningful extracted information, the SON decision maker will be able to adjust network parameters and resource allocation factors in a more intelligent manner. The experimental results show that despite the tremendous volume of the analyzed data—which is hundreds of times bigger than usual methods—it is possible to improve the KPIs, such as throughput, up to 30% by optimal resource allocation and reducing the signaling load. Also, the presence of feature extraction and parameter selection modules will reduce the response time of the self-optimization model up to 25% when the number of parameters is too high. Moreover, numerical results indicate the superiority of using support vector machine learning algorithm. It improves the accuracy level of decision making based on the rule-based expert system. Finally, uplink quality improvement and 15% increment of the coverage area under satisfied SINR conditions can be considered as outcome of the proposed scheme. 相似文献
Low-intensive laser radiation used by topical, intravenous, and transendoscopic routes was employed in the complex antituberculosis therapy of 120 patients with pulmonary tuberculosis concurrent with chronic nonspecific respiratory diseases (n = 48), diabetes mellitus (n = 20 patients), gastrointestinal diseases (n = 45). The results of treatment were compared with the parameters of 62 patients with the similar clinical and X-ray characteristics of a tuberculosis process and concomitant diseases. It was ascertained that laser therapy might enhance the efficiency of treatment of patients with concurrent abnormality statistically significantly, by reducing the time of bacterial isolation, closure of decay cavities in the lung tissue, hospital treatment and by accelerating the onset of stable remission of concomitant diseases. 相似文献
The success of porcelain veneers depends on knowledge of chairside and laboratory techniques. Improvements in porcelain materials and techniques have dramatically increased the ease and success of these procedures. The learning objective of this article is a review of the new porcelain veneer techniques. The same case is followed from conception to completion, describing and illustrating the techniques. 相似文献
Much of software engineering is targeted towards identifying and removing existing defects while preventing the injection of new ones. Defect management is therefore one important software development process whose principal aim is to ensure that the software produced reaches the required quality standard before it is shipped into the market place. In this paper, we report on the results of research conducted to develop a predictive model of the efficacy of one important defect management technique, that of unit testing. We have taken an empirical approach. We commence with a number of assumptions that led to a theoretical model which describes the relationship between effort expended and the number of defects remaining in a software code module tested (the latter measure being termed correctness). This model is general enough to capture the possibility that debugging of a software defect is not perfect and could lead to new defects being injected. The Model is examined empirically against actual data and validated as a good predictive model under specific conditions. The work has been done in such a way that models are derived not only for the case of overall correctness but also for specific types of correctness such as correctness arising from the removal of defects contributing to shortcoming in reliability (R-type), functionality (F-type), usability (U-type) and maintainability (M-type) aspects of the program subject to defect management. 相似文献
Considering the importance of biosensors on the Internet of the patient body that collect vital signs and transmit them to the coordinator, energy consumption and network lifetime are essential challenges in these networks. This paper, it has been tried to present a method based on adapting sampling rate through patient’s risk and discovered pattern by employing an intelligence method based on adaptive neuro-fuzzy inference system, interpolation function, and a biosensor patron. It causes restricting sensed and transmitted data to the coordinator. In the proposed schema, three methods containing Grid partitioning, Subtractive Clustering and fuzzy c-means have been used in two modes, including hybrid and error backpropagation, to predict the individual’s behavioral pattern and determine the patient's risk, attentively. The simulation results in MATLAB R2018b show that the proposed method reduces the network communications. It has improved energy consumption by up to three times and also reduced traffic by more than 80% compared to similar methods.
Wireless Networks - As Social networks are widely used by the people around the world, if this infrastructure can be used for event detection systems like fire forest detection, the overall cost of... 相似文献
In this paper, we propose a method for online upper body tracking using an IP PTZ camera. This type of camera uses a built-in
Web server resulting in variable response times when sending control commands. Furthermore, communicating with a Web server
involves network delays. Thus, because the camera is inside a control loop, the effective frame rate that can be processed
by a computer vision method is irregular and in general low (2–6 fps). Our tracking method has been specifically designed
to perform in such conditions. It detects, at every frame, candidate blobs using motion detection, region sampling, and region
color appearance. The target is detected among candidate blobs using a fuzzy classifier. Then, a movement command is sent
to the camera using the target position and speed. The proposed method can cope with low frame rate, and thus with large motion
of the target, even in the case of a fast walk. Results show that our system has a good target detection precision (>88%)
and low track fragmentation, and the target is almost always localized within 1/6th of the image diagonal from the image center. 相似文献
The performance of gas industries is extensively function of gas properties such as gas density. Due to this importance in the present work, a novel grid partitioning based fuzzy inference system method applied to predict gas density base on pressure, temperature and molecular weight of gas. To this end, the required experimental data are collected from reliable sources. Different comparison scenarios are used to evaluate the ability of model. The coefficients of determination (R2) for training and testing phases are calculated as 0.9985 and 0.9980 respectively. The determined indexes and graphical evaluations show that predicting model can estimate gas density in high degree of accuracy. According to the obtained results, the predicting model can be used as a simple and powerful software in gas industries to predict different processes. 相似文献