Judul: Pengembangan Progressive Web Apps Pada Sistem Manajemen Informasi Untuk Penyuluhan Pertanian Pada Aplikasi Digital Tani
Abstrak: Jaringan internet yang tidak stabil serta penetrasinya yang masih belum tersebar secara merata di daerah pedesaan merupakan hambatan nyata bagi penyuluh pertanian dalam melakukan tugasnya. Oleh karena itu, dibutuhkan suatu aplikasi yang dapat diakses dalam keadaan offline namun tetap memberikan pengalaman pengguna yang baik. Penelitian ini bertujuan untuk mengembangkan sistem manajemen informasi berbasis web dengan pendekatan Progressive Web Apps (PWA). Aplikasi yang dikembangkan menggunakan metode prototyping dengan pengujian setiap iterasinya menerapkan black-box testing. Aplikasi yang dihasilkan terdiri dari fitur artikel dan pengintegrasian forum tani dengan pendekatan PWA menggunakan framework Laravel 8 dan library workbox. Fitur PWA yang dikembangkan adalah mode offline dengan konsep caching (precaching dan runtime caching) serta kapabilitas instability menggunakan teknologi web manifest sehingga memungkinkan untuk diunduh ke dalam telepon seluler (device). Aplikasi yang dihasilkan dapat digunakan oleh penyuluh pertanian untuk membantu tugas mereka secara langsung di lapangan dalam mengakses informasi tanpa terkendala oleh jaringan internet yang kurang stabil., The unstable internet network and its limited penetration in rural areas are natural obstacles for agricultural extension workers in their tasks. Therefore, a good user experience application can be accessed offline is needed. The study aims to develop a web-based information management system with a Progressive Web Apps (PWA) approach. The developed application uses the prototyping method with black-box testing for each iteration. The resulting application consists of an article feature and forum integration for farmers using the PWA approach with Laravel 8 framework and workbox library. The PWA features developed are offline mode with caching (precaching and runtime caching) concepts and instability capabilities using web manifest technology, allowing the application to be downloaded to a mobile device. Agricultural extension workers can use the resulting application to assist them directly in accessing information without being hindered by unstable internet connections.
Keyword: agricultural extension, PWA, front-end, information, digital tani

Judul: Pengembangan Modul Frontend Forum Tani Pada Aplikasi Web Digital Tani Menggunakan Metode Prototyping
Abstrak: Pertanian merupakan salah satu komoditas andalan di Indonesia, kendati demikian masalah dapat muncul ketika petani tengah melakukan pekerjaannya. Berdasarkan studi literatur, forum diskusi online dinilai sebagai wadah yang baik sebagai tempat berdiskusi bagi petani. IPB telah mengembangkan aplikasi Digital Tani yang merupakan aplikasi untuk membantu menyelesaikan masalah-masalah pertanian. Penelitian ini akan mengembangkan modul forum tani pada aplikasi web Digital Tani dari sisi frontend menggunakan metode Prototyping. Hasil dari penelitian ini merupakan modul yang memiliki fitur utama forum seperti membuat, melihat, dan melaporkan thread dan juga fitur manajemen forum oleh admin. Hasil pengujian pada iterasi terakhir menggunakan metode blackbox testing menunjukkan semua fitur pada modul forum tani sudah berjalan dengan baik. Modul forum tani diharapkan dapat menjadi wadah bagi petani untuk melakukan diskusi seputar pertanian dengan sesama petani atau dengan para pakar dan penyuluh yang ada di IPB melalui aplikasi web Digital Tani., Agriculture is one of the mainstay commodities in Indonesia, however problems can arise when farmers are doing their jobs. Based on a literature study, online discussion forum are considered to be a good forum for discussions for farmers. IPB has developed the Digital Tani application which is an application to help solve agricultural problems. This research will develop forum module on the Digital Tani web application from the frontend side using the Prototyping method. The results of this study are modules that have the main forum features such as creating, viewing, and reporting threads as well as forum management features by the admin. The test results in the last iteration using the blackbox testing method show that all the features on the forum module have been running well. The forum module is expected to be a place for farmers to have discussions about agriculture with fellow farmers or with experts and instructor at IPB through the Digital Tani web application.
Keyword: Digital Tani, forum, frontend, agriculture, Prototyping

Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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