Analysis of Least Significant Bit Method Using Sequential Encoding-Decoding in Steganography Digital Image

The method of steganography commonly used to hide data or information is Least Significant Bit (LSB) method. One of the relevant research is LSB using sequential Encoding - Decoding by David Pipkorn and Preston Weisbrot. In this research, an analysis of the LSB method using Sequential Encoding - Decoding by doing some testing. The tests are on the aspect of message security using tools StegSpy and enhanced LSB algorithm, testing on image quality by calculating the Peak Signal to Noise Ratio (PSNR) value and see the image histogram, testing on robustness of message by doing some image processing operations on stego image, like cropping, rotating, and etc, and then testing on capacity to check size of cover image and stego image and calculates the maximum size of data that can be hidden. From the testing process, we know that there are deficiencies in the aspects of security, robustness and capacity of a message. And then in this research we try to change the location of messages that are hidden in the image bits, which previous research used the 8th bit of each bytes, changed to the 7th bit. To be able to correct deficiencies in the security aspect. After repairing and testing like before, obtained better results in the security aspect. This can be seen from the image of the enhanced LSB algorithm process, the message is not detected, but unfortunately the image quality is reduced, with the low PSNR value generated.

Bakiak and Interpersonal Intelligence on Physical Motor of Children in Khairani Kindergarten of Aceh Besar

Physical motor development is one of the five aspects of early childhood development, to achieve the motoric development, especially rough motoric is done through games. Play activities can stimulate a children’s physical motor development , and become one of the other important factors in improving a children’s psychic interpersonal intelligence. Based on this background, the researchers chose the title “Bakiak and Interpersonal Intelligence on Physical Motor of Children in Khairani Kindergarten of Aceh Besar”. Problems formulation in this study are: Is there any effect of bakiak game on children’s physical motor development , is there any effect of interpersonal intelligence on a children's physical motor development, and is there any interaction of bakiak game and interpersonal intelligence on a children’s physical motor development. The research objectives are: To determine the effect of bakiak game on children's physical motor, to determine the effect of interpersonal intelligence on children's physical motor development and to determine the interaction of bakiak game and interpersonal intelligence on children’s physical motor development . The location of the study was conducted at Khairani Kindergarten in Aceh Besar located in Lubok Batee village, Ingin Jaya Subdistricr, Aceh Besar District. This study was conducted on 15 October to 15 December 2018. The research subject of children's group B which amounted to 30 people, consisting of B1 (15 people) and B2 (15 people). This study was conducted by using experimental methods and research design with treatment by level 2 x 2. The research instrument used were bakiak game, interpersonal intelligence observation sheets and motor physical development tests. Research procedures are pretest, treatment, posttest, data processing, data analysis and conclusion. Meet the instrument validity and reliability standards. Data analysis techniques use descriptive data released by Mean, Median, Mode, frequency distribution table and histogram. Testing the analysis prerequisites that is normality and homogeneity data. From the results of data analysis obtained by this study shows the effect of bakiak game and interpersonal intelligence on physical motor of children in Khairani Kindergarten of Aceh Besar