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Breast cancer is the second most frequent cancer in the world, with 250 thousands of deaths each year. Early detection of tumors by breast exams and procedures can help to reduce these numbers. More medical practice is required. Professional training for medical procedures in real environments is costly and risky both for the student and the patient. A way to reduce costs and risks of training is...
This work presents a serious game approach together with a force model for epidural anesthesia training, a blind medical procedure for needle insertion in which correct placement and location is related to the loss of resistance (LOR) from tissues inside epidural lumbar region, in order to avoid the puncture of dura-mater membrane. The training uses a haptic device, controlled by a force and a mechanical...
This work incorporates the AES cryptography algorithm, to improve the hidden data security in two methodologies for steganography: the genetic algorithm and path relinking. It also combines them proposing a new hybrid approach that outperforms the LSB (least significant bits) substitution technique presented in works cited in the literature concerning the quality of a stego image. It improves the...
Each day the Internet connects more people, increasing the need for transmitting secure information. One way to protect the data sent over the web is to conceal the relevant information inside a typical image, hiding the data from intruders. This paper proposes a hybrid heuristic, combining a genetic algorithm and the path relinking metaheuristic to efficiently solve this problem. Computational results...
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