An effective data storage model for cloud databases using temporal data de-duplication approach

Author(s):  
S. Muthurajkumar ◽  
M. Vijayalakshmi ◽  
A. Kannan
2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Amr M. Sauber ◽  
Passent M. El-Kafrawy ◽  
Amr F. Shawish ◽  
Mohamed A. Amin ◽  
Ismail M. Hagag

The main goal of any data storage model on the cloud is accessing data in an easy way without risking its security. A security consideration is a major aspect in any cloud data storage model to provide safety and efficiency. In this paper, we propose a secure data protection model over the cloud. The proposed model presents a solution to some security issues of cloud such as data protection from any violations and protection from a fake authorized identity user, which adversely affects the security of the cloud. This paper includes multiple issues and challenges with cloud computing that impairs security and privacy of data. It presents the threats and attacks that affect data residing in the cloud. Our proposed model provides the benefits and effectiveness of security in cloud computing such as enhancement of the encryption of data in the cloud. It provides security and scalability of data sharing for users on the cloud computing. Our model achieves the security functions over cloud computing such as identification and authentication, authorization, and encryption. Also, this model protects the system from any fake data owner who enters malicious information that may destroy the main goal of cloud services. We develop the one-time password (OTP) as a logging technique and uploading technique to protect users and data owners from any fake unauthorized access to the cloud. We implement our model using a simulation of the model called Next Generation Secure Cloud Server (NG-Cloud). These results increase the security protection techniques for end user and data owner from fake user and fake data owner in the cloud.


2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Xiaomin Yu ◽  
Huiqiang Wang ◽  
Hongwu Lv ◽  
Junqiang Fu

The construction and retrieval of indoor maps are important for indoor positioning and navigation. It is necessary to ensure a good user experience while meeting real-time requirements. Unlike outdoor maps, indoor space is limited, and the relationship between indoor objects is complex which would result in an uneven indoor data distribution and close relationship between the data. A data storage model based on the octree scene segmentation structure was proposed in this paper initially. The traditional octree structure data storage model has been improved so that the data could be backtracked. The proposed method will solve the problem of partition lines within the range of the object data and improve the overall storage efficiency. Moreover, a data retrieval algorithm based on octree storage structure was proposed. The algorithm adopts the idea of “searching for a point, points around the searched point are within the searching range.” Combined with the octree neighbor retrieval methods, the closure constraints are added. Experimental results show that using the improved octree storage structure, the retrieval cost is 1/8 of R-tree. However, by using the neighbor retrieval, it improved the search efficiency by about 27% on average. After adding the closure constraint, the retrieval efficiency increases by 25% on average.


Author(s):  
Ka Sun ◽  
Chonglong Wu ◽  
Gang Liu ◽  
Yingying Li ◽  
Pinqian Wang

Sensors ◽  
2013 ◽  
Vol 13 (5) ◽  
pp. 5757-5776 ◽  
Author(s):  
Hua Fan ◽  
Quanyuan Wu ◽  
Yisong Lin ◽  
Jianfeng Zhang

2020 ◽  
Author(s):  
Shashi Bhushan ◽  
Sanjay Kumar Tiwari

Abstract The Air Quality Index (AQI) is an air quality standards pointer based on air pollutants that have negative impacts on human health and the environment.Due to many human achievements, air pollution is increasing very rapidly and it is the introduction of chemicals, particles or organic materials into the atmosphere that harms the human environment and the natural environment.Indeed, air pollution in metropolitan and industrial cities is one of the major environmental problems. Therefore it is very important to predict pollution and avoid these problems.One of the most exciting and difficult functions is the forecast of air pollution using data mining. Many systems are intentionally help with data storage, inventory management, and convenient data creation.India's air quality indicator is a standard measure used to indicate pollution (so2, no2, rspm, spm, etc.) from time to time. The main objective of the current study is to estimate the temporal AQI used by the previous day AQI and to predict and visualize the temporal data mine using a slope interval and an arbitrary forecasting process of climate change. In Navigation Forecast, we divide the database into 85% data and 15% data based on data testing and training to determine seasonal variations and styles. Balancing problems are often exploited by problems and forecasting uses an arbitrary forecasting process and gradient idle time. Air quality forecast based on at least one year's forecast as a reliable slope using historical data of previous years and a persistent problem.


2020 ◽  
Author(s):  
Shashi Bhushan ◽  
Sanjay Kumar Tiwari

Abstract The Air Quality Index (AQI) is an air quality standards indicator based on air pollutants that have negative impacts on human health and the environment. Because of several human activities, air pollution is growing very quickly, and it is the introduction of chemicals, particulate matter or biological materials into the atmosphere that cause human suffering and also harms the natural environment. Indeed, air pollution in metropolitan and industrial cities is one of the major environmental problems. So predicting pollution and avoiding these issues is very crucial. One of the most exciting and difficult functions is the forecast of air pollution using data mining. Many systems are designed to help data storage, inventory management and convenient statistics generation. India's air quality indicator is a standard measure used to indicate pollution (so2, no2, rspm, spm, etc.) from time to time. The main purpose of the current study is to predict the temporal AQI used by the previous day AQI and climate change is used to predict and visualize the temporary data mine using a gradient break and an unreasonable forecasting process. In Navigation Forecast, we divide the database into 85% data and 15% data based on data testing and training to determine seasonal variations and styles. Balance problems are often exploited by problems and forecasting uses an unreasonable prediction process and gradient downtime. Air quality forecasts based on historical data of previous years and predictions for less than a year as a reputable gradient using a recurring problem.


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