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Traditional houses scattered with various unique forms in the territory of Indonesia reveal a distinctive and unique local cultural identity in their states and display the richness of the traditional culture of the Indonesian nation. The diversity of traditional houses in this archipelago has a high artistic feel in architectural forms, motifs, and similarities in philosophy. Still, it is rich in architectural structures that differ from one place to another. The traditional housing group for the Sentani tribe in Ifale village is formed from the unity of three different kinship groups of indigenous peoples. The three kinships live one life together as the traditional Sentani people and still maintain the ancestral traditions passed down from generation to generation by adjusting to current life developments. The traditional house of the Sentani indigenous people has changed with the entry of knowledge and changes in people's lifestyles. The shift in housing does not affect the existence of their traditional residence, a nation's wealth that must be maintained and protected. This study aimed to study changes in building traditional Sentani houses on Lake Sentani in Jayapura Regency. The research method used in this research is descriptive in conducting data analysis using qualitative methods (field data) and quantitative (excel program and SPSS). The study results show that changes in the way of building the traditional houses of the indigenous people of the Senani tribe towards the process of building and using house construction for the period 1907-1925 and 2021 have changed from places formed by their ancestors to modern traditional houses. These changes are influenced by the increase in community economic growth, public awareness of environmental and human health, and construction use following the latest developments in construction technology.

Taxes have a very important role in the life of the country because taxes are needed in financing most of the country's development interests so that people's welfare is achieved. Public awareness is needed in order to create a tax orderly culture for the people of Indonesia. One of the efforts to raise public awareness can be done through outreach to school students so that early awareness of taxes has been formed. Institut Teknologi dan Bisnis Ahmad Dahlan community service team carried out socialization to Senior High School of Muhammadiyah 4 Lamongan students regarding taxes using the offline method. The students responded enthusiastically to the tax introduction activity. With this activity, the community service team hopes that Indonesian people will become more aware of tax obligations.

The increase in motorized vehicles in urban areas is followed by an increase in cases of motorcycle theft due to the lack of public awareness about the motorcycle security system. The intensity of motorcycle theft with its disclosure is still far in comparison. Crime will also increase, such as cases of theft of motor vehicles, especially motorbikes. Cases of motorcycle theft still often occur, this happens because there is still a lack of security systems contained in motorized vehicles that only use ignition. the existence of an alternative safety system is needed because the average key of a conventional motorcycle is easily penetrated by thieves. A double motorcycle safety device (Doble Smart Lock) composed of an RFID and Personal Identification Number (PIN) and an ATMega microcontroller. This system serves to provide two-stage security. The first stage is a microcontroller in the form of a PIN and the second stage is an RFID system. If the first stage breaks then it will enter the second stage, namely the RFID system The results in the form of a main tool for motorcycle management consists of: Power supply, RFID Card, RFID Reader, Personal Identification Number (PIN), IC / Microcontroller ATMega and already running. The system testing process shows the number 3 in the expert validation test and the number 3 in the expert validation trial. Based on the above calculation, it can be concluded that the validation results from the expert show that the value of 3 is between 2 - 3, which is classified in the valid category. The system process shows the number 3 in the expert validation and the number 2.9 in the validation trial of the user. Based on the above calculation, it can be concluded that the validation results from the user point to a value of 2.9 between 2 - 3 which is classified in the valid category.