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Justin Stec's Undergraduate CV

Lista de exercício com gabarito

an example how a book may look like a lot of pgfornaments (without using pgfornaments thanks to Dr. Lian Tze Lim from Overleaf) can be compiled into "periodical aureo" page size (almost canon conform) but with the switcher in main.tex file if you prefer a tablet or a screen reading. the calligraphy used for letters can be switched off for people who are not used to read handwriting, same for audio links (If you just want to read the book, it's best to download the PDF for offline reading, rather than waiting for it to render completely in the previewer on this page.)

Se pretende describir el decaimiento de una partícula α encontrando los niveles de energía Eα correspondientes a los estados ligados de la partícula producto de la desintegración. Los niveles de energía y los estados ligados se encuentran mediante dos métodos de aproximación: WKB y diferencias finitas. Posteriormente se halla el tiempo de vida medio τ, se comparan los resultados con los de la literatura y se decide el mejor método de solución acorde con la literatura.

In this experiment we conducted bending tests on several different specimens of Aluminum as well as Ceramics. Using the data gathered from these tests as well as measurements we took of their primary dimensions, we calculated (for each specimen) modulus of rupture, flexure strain, Young's modulus, as well as specific strength and stiffness. These tests gave us insight into new characteristics of aluminum and ceramics that allowed us to better understand their applications in industry.

Watermarking technique for the image is an efficient method for protecting copyright image, and also a huge topic in cryptography. In this paper, two spread spectrum watermarking scheme, the Convolution Image-based Model (CIM) and the Exponential Convolution Image-based Model (ECIM) are going to be formulated and discussed. The watermarking experiment result will be shown and discussed, focusing on the attack scheme, protectability, and the information encryption of the watermark. We will show that the convolution image-based model for invisible watermark is weak of protectability, but it is able to hide the information (the size of watermark must be less than the original image) and store inside the image.

Zarati Ichrak's CV

Mock AMC questions

This article analyzes how economic growth, economic population, budget deficit, disposable income per capita and currency affect the theoretical scale of a country’s trade with traditional economic perspective. The study found that China owns the strongest trade competitiveness in the “BRICS” five countries, the second is Russia. India, Brazil and South Africa are respectively after that. From the point of view of trade competitiveness, though economic population, economic growth, and fiscal deficit on China trade scale role better than the rest of the four countries, but the disposable income per capita in South Africa have the greatest positive affect of foreign trade scale, and almost no impact to China. In addition, the exchange rate appreciation for China's foreign trade scale of most negative effects. In the short term, therefore, China could continue to maintain strong trade competitiveness, but not necessarily if in the long run.