The skin has many functions, including as a protective body, as a sense of touch or communication tools, and as a temperature regulator. The desire of most people, especially women, have white, healthy, clean and well-taken facial skin. However, the treatment does not pay attention to the type of skin, causing new problems such as acne, dry skin and others. To do skin care requires sufficient knowledge. This study aims to help provide identification of the type of facial skin using an expert system. The method used is certainty factor. The results obtained in this study are that this system has been able to identify the type of facial skin with an accuracy of 91%. Thus, an expert system for identifying the type of facial skin can be used to assist users in carrying out treatments.

The COVID-19 pandemic has caused a decline in the economic level of the people. This requires universities to quickly take concrete steps in helping their students. The purpose of this study is to assist the tertiary institution in determining who are eligible students to get a single tuition relief (UKT) using the KNN and SAW methods. The results of the UKT relief test show that this decision support system produces the same output as a manual calculation performed with Microsoft Excel. A further development that can be done is the addition of criteria by the situation and conditions of the relevant agencies.

Decision making must be accompanied by a strong foundation in which knows the net benefits felt by the system user. This study aims to determine the effect of variables on the D&M IS Success Model and WebQual 4.0 in Siakad Online STMIK Sinar Nusantara Surakarta. This research used quantitative method with a questionnaire as a data collection tool. The results show that the research indicators and combination models get significant results. The indicator of research has a significant effect on the combination model. D&M Model IS Success Model and WebQual 4.0 have significance value of 90% and R2 of 84%. It means information quality, system quality, service quality, and website qualityhave significance effects to Siakad Online intention to use and SiakadOnline’s user satisfaction. Then, intention to use and user satisfaction have significance effects to SiakadOnline’s user net benefits. Thus, this combination model is able to describe the relationship between indicators well. Suggestion that can be considered for future research is the addition of other external variables, such as gender.

Academic information system is an important system in students learning’s activities because it’s used as connector between students and lecturers. In addition, academic information system also acts as a liaison between lecturers and other relevant external parties. Academic information system provides several services, both for students and lecturers. These facilities include the provision of information on study plans, grades, schedules, and courses. However, only a few facilities are frequently used so that the use of the academic information system is not optimal.The problem in this study is the need for an evaluation to determine the acceptance of the academic information system by users, so that the system can be improved and developed. This study aims to determine the acceptance of web-based academic information system by users at STMIK Sinar Nusantara Surakarta with the Technology Acceptance Model or TAM.

<em>Information technology is currently developing very rapidly. Especially after the Covid-19 Pandemic which makes activities and work done online. Communication allows the exchange of information between users and recipients. The Informatics Study Program is one of the study programs at STMIK Sinar Nusantara Surakarta. Currently there are no special services available as a medium for delivering information for students and the wider community. So it is necessary to have a website that is useful for conveying information related to the activities of the Informatics Study Program. One of the widely available Content Management System is WordPress. In this study, the design and construction of a WordPress-based study program website uses the Waterfall model. Which stages in the Waterfall model consist of needs analysis, system design and software design, design and development, implementation, testing and maintenance. In the testing phase, the System Usability Scale (SUS) model is used to test the usability level or usability of the website. The test results show the usability level in the precentile ranks of 91.6%. With the category of being included in the class A scale or letter grades level and having an adjective rating level of BEST IMAGINABLE or ACCEPTABLE in the acceptability ranges. This assessment is based on 40 respondents consisting of Education Personnel, Lecturers, Students and the General Public.</em>