Peer-to-peer systems nowadays are widely used because of the scalability and high reliability. File replication and consistency maintenance are widely used techniques to achieve high system performance. These techniques are connected to each other. The connection of these techniques is consistency maintenance is needed in file replication to keep the consistency between a file and the replicas. Traditional file replication and consistency maintenance methods need a high cost. The usage of IRM (Integrated file Replication and Consistency Maintenance inP2P systems) which will achieve high efficiency at a significantly lower cost can be used to solve this problem. IRM reduces redundant file replicas, consistency maintenance overhead, and unnecessary file updates.

Smartphones have become an important part of human life until now, apart from making phone calls and other communication functions, smartphones are also used as tools for shopping, conducting banking transactions, and so on. This makes security Software on smartphones becoming more critical. trust execution environment technology was popularized to support care for users if the Operation System is compromised namely trust execution environment ARM TrustZone. This research focuses on User-Interaction and Input/Output audio input user interaction channels and proposes an application-transparent solution to keep the user communication strategy on mobile platforms using ARM TrustZone.
This research advantage the ARM TrustZone to bring a defended architecture for User Interface input for user interaction channels (T-User-Interaction) and Audio-Input/Output for VoIP calls (T-VoIP-C). The main objective is to establish that the architecture is clear for cellular utilization. All along trust execution environment-established research, one of the critical objections faced was the ability to safely prototype designs. In a trust execution environment study, it is generally necessary to cross hardware factors with the trust execution environment-Operation System, which could be impressive for non-hardware specialists, conditional on the base applicable from trust execution environment Operation System vendors. This research considers a simulation-based model (T-simulation) that cuts down the composition time and hardware background appropriate to frame a hardware situation for expectation execution situation prototyping.

The implementation of the 2020 Pilkada in Gunungpati District as a whole has improved in terms of the quality of its implementation. This is the result of the cooperation of all competent parties at the sub-district and village levels. This study aims to analyze the collaboration of the Supervisory Committee for the Election of Governors and Deputy Governors in 2020, Gunungpati District and to understand in depth the flow of information using Social Network Analysis (SNA). The results showed that the overall density of the supervisory committee network was 0.53 or 53%, so the characteristics of the network of members of the Panwaslu Kec.Gunungpati network were in the high category. Panwaslu members with the initials DAP, RV, WPU and M are the most dominant members of the Panwaslu with values of Centrality, Closeness and Betweness Centrality in the network.