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The practice of plagiarism is not a strange thing anymore, especially among the students that almost every day working on tasks assigned by the lecturer. The practice of plagiarism is done by the exchange of source code that have been successful. Detecting plagiarism practices is a solution that should be done so that the fraudulent actions can be minimized. Overall, the plagiarism detection software can provide a useful contribution to minimize plagiarism. Using the software can be deterrent for students to take a plagiarism. However, using this software does not provide the final answer. Software only detects and notifies any duplication. Therefore, the intervention of manual inspection and assessment is still needed. The design result obtained by a plagiarism detection system model for programming assignment in a virtual classroom based on Moodle and delivery system alerts for the student. The test results show that the software can detect any similarities in the assignment by generating a percentage of similarity between two files or many files. In addition, the software can deliver alerts from the lecturer for the students that plagiarism is detected using SMS Gateway.

A concise formula expressing the entropy of adatoms as a divergence of their flow due to diffusion and deposition flux is presented. Adatom-elastic strain interaction is provided by a canonical coupling between the diffusion flow and the deformation gradient of the strained layer. It is found that the zero of the free energy of an adatom-strained layer continuum system should be that of a coherent unstrained layer, thus necessarily neglecting the cohesive energy contribution, while for the adatom-unstrained continuum layer the zero corresponds to an equilibrium between the adatoms and free atoms, which involves the cohesive energy.

We report here on the fabrication of porous anodic alumina (PAA) films from commercially available impure aluminum foil. While the expensive ultrapure PAA films are restricted to potential applications in nanoelectrophotonics, the impure PAA films are more suitable for large-scale applications, such as in catalysis and filtration. The anodization current behavior and chemical composition of the resulting PAA films from impure and ultrapure foils were found to be similar for the same set of anodizing conditions. However, the PAA films from impure aluminum foil contained pore arrays of much smaller size and less consistently sized pores than those of PAA from ultrapure foils. We find that these qualities are improved by either annealing or electropolishing the aluminum foil prior to anodization, although not to the degree of PAA produced from ultrapure foils. Greater improvement is found for annealed foils compared to electropolished foils.