Judul: Design and Development of Web-based Meteorological Data Dissemination Information System at Meteorological Research and Education Station, IPB University
Abstrak: Sistem informasi diseminasi adalah salah satu cara yang mudah dan efektif menyebarkan data meteorologi kepada pengguna. Penelitian ini bertujuan merancang dan mengembangkan sistem informasi diseminasi data meteorologi pada Stasiun Meteorologi Riset dan Pendidikan, IPB University berbasis web. Metode pengembangan sistem menggunakan System Development Life Cycle (SDLC) dengan model waterfall. Tahapan SDLC, diawali analisis kebutuhan sistem dan pengguna, merancang desain konseptual dan fisik, implementasi dan instalasi sistem, pengujian dan evaluasi sistem, dan prosedur pemeliharaan. Penelitian ini menghasilkan sistem yang dapat memberikan akses data meteorologi dengan berbagai konfigurasi dan menampilkan data real-time dalam bentuk dashboard. Sistem diimplementasikan dalam bentuk website yang dibangun menggunakan framework Laravel. Fungsi akses data dilakukan dengan memproses request dari pengguna menggunakan query builder dan merespon dalam bentuk output file *.xlsx dan *.csv. Fungsi monitoring menampilkan data dari database dengan menggunakan query builder berupa tampilan dashboard dengan grafik yang berubah secara real-time. Pengujian sistem dengan metode System Usability Scale (SUS) menghasilkan nilai sebesar 80,83 dengan grade B atau excellent yang menunjukkan sistem dapat diterima oleh pengguna. Evaluasi untuk pengembangan sistem memerlukan analisis dengan cakupan pengguna yang lebih beragam., Dissemination information system is one of the easy and effective ways to distribute meteorological data to users. This research aims to design and develop a web-based meteorological data dissemination information system at the Meteorology Research and Education Station, IPB University. The system development method uses the System Development Life Cycle (SDLC) with a waterfall model. The SDLC stages begin with the analysis of system and user requirements, followed by designing the conceptual and physical structures, system implementation and installation, system testing and evaluation, and maintenance procedures. This research results in a system that provides meteorological data access with various configurations and displays real-time data in the form of a dashboard. The system is implemented as a website built using the Laravel framework. The data access functions are performed by processing user requests using the query builder and responding in the form of *.xlsx and *.csv output files. The monitoring function displays data from the database using the query builder, presenting it in a dashboard view with real-time graphs. The system testing, conducted using the System Usability Scale (SUS) method, yielded a score of 80,83 with a grade of B, indicating an excellent level of user acceptance. Evaluation for system development requires analysis with a more diverse user scope.
Keyword: climate data, meteorological station, SDLC, system usability scale, waterfall model

Judul: Development of Web-Based System Maintenance and Monitoring Front-End System for ISURF Lab Tools
Abstrak: Terdapat banyak metode penanaman tumbuhan untuk mendapatkan hasil panen dengan kualitas yang beragam. Namun belum dapat dipastikan cara mendapatkan hasil panen yang berkualitas tinggi secara terus menerus karena tidak adanya pemantauan dan pemeliharaan terhadap objek secara langsung. Untuk mengatasi masalah tersebut, maka akan disediakan wadah untuk peneliti agar dapat melakukan pemantauan dan pemeliharaan supaya mendapatkan hasil panen dengan kualitas tinggi. Penelitian ini berfokus pada pembuatan front-end sistem monitoring berbasis web dengan menggunakan data sensor yang sudah menggunakan teknologi internet of things. Tujuan dari penelitian ini adalah mempermudah kinerja peneliti dalam melakukan pemantauan objek pada lab ISURF dari jarak jauh. Perancangan web dilakukan menggunakan framework Laravel 7.2 dengan API untuk integrasi backend. Keluaran dari penelitian ini adalah grafik data real time yang membaca data sensor dengan dikembangkannya sistem monitoring pada lab ISURF dengan melakukan pengujian secara black box dengan hasil uji bahwa sistem dapat berjalan 100% dengan benar sesuai dengan kebutuhan utama pengguna dan sistem. Metode yang digunakan adalah metode Waterfall., There are many methods of growing plants to get yields with varying quality. However, it can not be ascertained how to get high-quality crops continuously because there is no direct monitoring and maintenance of objects. To overcome this problem, it will be provided for researchers to be able to carry out monitoring and maintenance in order to get high quality crops. This research is mainly focus on front-end web based system by using sensor data that related with internet of things technology. The purpose of this research is to help researcher in monitoring object in lab ISURF remotely. This research is builded by Laravel 7.2 for the framework combined with API for backend integration. The output of this research is a real time data graph that reads sensor data with the development of a monitoring system in the ISURF lab by conducting black box testing with test results that the system can run 100% correctly according to user and system needs. This percentage figure is because there are still some functions that have not been made so that the system can be more efficient and effective, such as the notification function. The method used is the Waterfall method.
Keyword: front-end, internet of things, lab ISURF, monitoring system, web

Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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