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Android Based Application of Bussines License at Department Of Industry and Trade In Jayapura City was built with the aim of making it easier for applicants to apply for SIUP online using cellphones and to improve public services at the Jayapura City Industry and Trade Office. The processing of a Trade Business Permit (SIUP) which has been done manually, which is submitted directly to the Jayapura City Office of Industry and Trade, can be done by accessing it via an Android phone. The research methods used are 1) Data collection methods are carried out through literature studies, interviews and documentation, 2) application development methods with communication stages, planning quickly, designing quickly, modeling and designing quickly, forming prototypes, software to users and feedback. Programming language used is PHP MYSQL and AppGeyser. The results of the design are in the form of an application that can process input data: applicant's personal data, company data, submission data, admin data, data confirmation, SIUP upload and the resulting output is SIUP data print, SIUP application number report.

Obesity is a medical condition in the form of excess body fat that accumulates in such a way as to have a detrimental impact on health, which then decreases life expectancy and or increases health problems. Obesity is now a common health problem in this modern society with a variety of technological discoveries that make people don't need to move a lot to do something, resulting in people living a lifestyle without much Move. Researchers feel the need for an expert system application that can easily diagnose obesity with everyone just by modalizing simple applications on people's smartphones. The expert system that is built will diagnose early obesity disease by method of drawing inferences using backward chaining method and to test the level of belief conclusions using certainity factor method. The system will be able to provide output in the form of obesity diagnosis, explanation, tips and advice on obesity handling solutions. System development Methods using ESDLC (Expert System Development Life Cycle). The system is built on Android.