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Warnings about bitcoins and other cryptocurrencies are coming from all directions. Concerns about the security of the cryptocurrency have continued to shadow it. Last year, almost 120,000 bitcoin worth around $78m (£58m)were stolen from Hong Kong-based Bitfinex, one of the most popular cryptocurrency exchanges, which resulted in a 20% drop in the value of the currency at the time. Moreover, there is also a high risk of fraud. There is still a good deal of misinformation and lack…

Dynamic resources allocation has become even more attractive as a research direction with commodity computing gaining momentum and bringing new requirements regarding elasticity and flexibility and with the growing importance of cloud computing.  The aim is to deliver high-performance computational while leveraging on other aspects, such as energy consumption. Admittedly, heterogeneity comes at the cost of greater design and management complexity. A promising approach to address the difficulties posed by this scenario is to exploit…

PCA is a way of identifying patterns in data, and expressing the data in such a way as to highlight their similarities and differences. Below are the steps of the algorithm:

Step 1 – Initialize the dataset, 6 vectors of 32 sample data

Step 2 – Subtract the mean from each of the data dimensions. The mean subtracted is the average across each dimension. [math]Y= X – (O * Mean(X)) [/math], where [math]O…

Inverse kinematics is a much more challenging problem than forward kinematics. It is the procedure when we have a desired end effector position but need to know the joint angles required to achieve it. The solution of the inverse kinematics is computationally expensive, and usually, it takes long time for the real time control of manipulators. Singularities and nonlinearities that make the problem harder to solve. Hence, only for a slight class of kinematically simple…

Introduction Speech is one of the fastest and most natural ways of communication between humans. The speech signal contains not only the message but also necessary information like the emotions of the speaker [1]. Therefore, Speech emotion recognition (SER) is a research field that based on speech recognition but deals with the recognizing the emotional state of the speaker. Speech emotion recognition can have applications between a natural man and machine interaction. Such as web…

Abstract Feature extraction is a crucial part of many tasks. In recent years, deep learning approaches have achieved significant importance as a way of constructing hierarchical representations from unlabeled data. Understanding how to recognize complex, high-dimensional data is one of the greatest requests of our time. Deep Machine Learning have showed us that there is an efficient and accurate method of recognition and classification of data either in supervised or unsupervised learning process. In this…

Abstract In our times, there has been a tremendous evolution of technology that among others has extended human capabilities. This infiltration of technology in everyday life can be, at least at a high extent, attributed to computers and the development of computer science. In this paper, we examine the definition of science and the scientific method, and we try to justify the validity of the scientific aspects of computer science. Furthermore, we define computer science…

In general, an operating system (OS) is responsible for managing the hardware resources of a computer and hosting applications that run on the computer. An RTOS performs these tasks, but is also specially designed to run applications with very precise timing and a high degree of reliability. This can be especially important in measurement and automation systems where downtime is costly or a program delay could cause a safety hazard. To be considered “real-time”, an…

A mobile robot needs locomotion mechanisms that enable is to move unbounded through-out its environment. However, there is a large variety of possible movement ways and so the selection of a robot’s approach to locomotion is an important aspect of mobile robot design. Most of the locomotion mechanisms have been inspired by their biological counterparts. Biological systems succeed in moving through a wide variety of harsh environments. Therefore, it can be desirable to copy their…