Brain-computer interface of focus and motor imagery using wavelet and recurrent neural networks

Brain-computer interface is a technology that allows operating a device without involving muscles and sound, but directly from the brain through the processed electrical signals. The technology works by capturing electrical or magnetic signals from the brain, which are then processed to obtain information contained therein. Usually, BCI uses information from electroencephalogram (EEG) signals based on various variables reviewed. This study proposed BCI to move external devices such as a drone simulator based on EEG signal information. From the EEG signal was extracted to get motor imagery (MI) and focus variable using wavelet. Then, they were classified by recurrent neural networks (RNN). In overcoming the problem of vanishing memory from RNN, was used long short-term memory (LSTM). The results showed that BCI used wavelet, and RNN can drive external devices of non-training data with an accuracy of 79.6%. The experiment gave AdaDelta model is better than the Adam model in terms of accuracy and value losses. Whereas in computational learning time, Adam's model is faster than AdaDelta's model

Rancangan Implementasi Manajemen Database pada Background Process Menggunakan CrondManager sebagai Upaya Peningkatan Performance dan Keamanan Data secara Online: Studi Kasus PT. YZI

Processing of data efficiently will adversely impact the live cycle time applications. However, on the other hand the concern related to management and structured data is still lacking, so that such a bad impact of system downtime. This happens because the delivery mechanism for data that does not correspond to the role of business models and applications. PT. YZI is an organization engaged in online advertising property, where each day its ad information obtained in real time both the merchant and independent property agent. However, there are some processes that are found are still not in accordance with the role model PT.YZI include a data management and structure are still lacking that declining application performance and her no data encryption to ensure data security. With the basic theory java native and method AES() encryption MySQL then CrondManager is one of alternative tools of data processing that can be implemented right on the system. The end result of this research is the design implementation process CrondManager the background system for PT. YZI who apply online integration of data in the form of a data listing and/or encryption of data that are proven to meet the data security aspects. By implementing this CrondManager expected aspects of performance systems, data security and zero downtime system can be met