Judul: Perbandingan Arsitektur Informasi Situs Web Universitas Klaster Satu di Indonesia Menggunakan Aalto Interface Metrics
Abstrak: Perguruan Tinggi Negeri di Indonesia memiliki peringkat berdasarkan klaster dan lima teratas pada klaster terbaik menurut Kemendikbud adalah lima teratas juga dalam QS World University Ranking versi Indonesia. Arsitektur Informasi situs web pada Perguruan Tinggi Negeri menjadi salah satu unsur perangkat penilaian. Penelitian ini memanfaatkan layanan perbandingan desain situs web bernama AIM. Penelitian dilaksanakan dengan melakukan perbandingan antarmuka tiga kategori halaman yang beririsan pada kelima situs web. Hasil keluaran dibagi berdasarkan empat kategori dan menghasilkan 25 metrik. Hasil analisis diperoleh dari pemeringkatan nilai skor yang didapat dari mengkonversi evaluasi menjadi angka lalu ditarik kesimpulannya. Hasil perbandingan menunjukkan PTN telah cenderung mencapai predikat cukup pada segi estetika. Setiap PTN memiliki kelebihan dan kekurangannya masing masing terutama pada segi persepsi warna, dan fluensi
Keyword: Arsitektur Informasi, Evaluasi, Metrik, Perbandingan

Judul: Analisis Arsitektur Informasi Situs Web Universitas Terbaik di Dunia dan Indonesia Berbasis Webometrics
Abstrak: University ranking system can be considered as a method to improve the performance at each university. Two popular university ranking systems can be viewed on the site Webometrics and QS World University Rankings. There are three things that affect the rank of universities,i.e,the information architecture, the quality of the content of information, and the activities of the universities. This research emphasizes on the information of architecture by comparing the architecture of information on universities in the world and universities in Indonesia. Menus on the website of 10 universities in the world and 10 universities in Indonesia are compared based on the search level and position the menu located on each website. From the entire menu, only 30 menus are analyzed based on the highest weight values. The analysis showed that the universities in Indonesia are more likely to provide profile information, while universities in the world put forward the research and development based on user information.
Keyword: Webometrics, QS World University Ranking, university ranking system, information architpecture

Judul: Dynamical System of Hepatitis B in Three Groups with Vaccination
Abstrak: The aim of this study is to modify the hepatitis B transmission model in three age groups involving vaccination from the model conducted by Zhoe and Zhang.The method used is to analyze the stability of the fixed point and its basic reproduction number (R_0). Performed stability analysis and numerical simulation to see population dynamics. Next, a sensitivity analysis of the parameters was carried out to see its effect on R_0. From the analysis obtained two fixed points, namely non-endemic and endemic fixed points. Non-endemic fixed points are locally asymptotically stable if R_0 <1 Meanwhile, the endemic fixed point is locally asymptotically stable if R_0 > 1. Hepatitis vaccination affects the number of susceptible population, because the more successful the vaccination, the smaller the number of susceptible populations so that the smaller the population will be infected.
Keyword: Dynamic, Hepatitis B, Vaccine, Mathematical model