Judul: Pembangunan Prototipe Sistem Aplikasi Mobile Pedagang Sayur Keliling dengan Pendekatan Experiential Marketing
Abstrak: Penggunaan aplikasi e-commerce di Indonesia untuk membeli bahan pokok terus meningkat dari waktu ke waktu dan semakin digemari ketika pandemi terjadi, kemudahan produk yang langsung sampai di depan rumah menjadi alasan aplikasi ini diminati. Sayangnya pelanggan tidak bisa berinteraksi langsung dengan produk yang mereka inginkan bila hanya melalui layar smartphone. Sebaliknya, pedagang sayur keliling bisa memberikan pengalaman tersebut untuk pelanggan tetapi kehadirannya yang tidak menentu menyulitkan pelanggan untuk berbelanja. Penelitian ini bertujuan untuk membangun prototipe sistem aplikasi mobile pedagang sayur keliling sehingga masyarakat bisa berbelanja dengan berinteraksi langsung dengan produk secara efisien. Aplikasi ini telah dikembangkan dengan framework React Native dan sudah diuji oleh empat client. Setelah dua iterasi pengembangan dengan metode prototyping, aplikasi sudah memenuhi seluruh kebutuhan yang diinginkan client dan harapannya bisa diterapkan sebagai model bisnis baru antara pelanggan dan pedagang sayur keliling di Indonesia., The utilization of e-commerce applications in Indonesia for buying daily needs is getting higher day by day and even more popular during the pandemic, convenient products delivery to the customer’s front door becomes a reason why these applications are loved. Unfortunately customers cannot directly interact with the products they want through a smartphone screen. On the other hand, vegetable peddlers are able to give this experience to customers but their uncertainty to be present makes it difficult for customers to shop. This research’s objective is to develop a mobile application prototype system for the vegetable peddler so people can shop by interacting directly with the products efficiently. These applications have been developed using React Native framework and have been tested by four clients. After two iterations of development with prototyping methods, applications have fulfilled all requirements which clients want and hopefully can be implemented as a new business model between customers and vegetable peddler in Indonesia.
Keyword: experiential marketing, prototyping, React Native, vegetable peddler

Judul: Perancangan User Experience Aplikasi Mobile Tokocabai dengan Metode Lean UX
Abstrak: Cabai merupakan komoditas pertanian di Indonesia yang memiliki produksi dan permintaan yang cukup tinggi, namun harga cabai di pasar seringkali mengalami fluktuasi harga yang menyebabkan kerugian di kalangan petani cabai. Teknologi informasi berupa marketplace dinilai dapat membantu petani dalam meningkatkan keuntungan penjualan komoditas pertanian khususnya cabai. Sebelumnya, marketplace Tokocabai sudah tersedia untuk versi web, namun untuk versi mobile belum tersedia. Penelitian ini bertujuan menghasilkan rancangan prototipe mobile user experience sistem Tokocabai yang sesuai dengan kebutuhan para praktisi dan pengguna. Metode Lean UX memiliki empat tahap cycle yaitu declare assumption, create an MVP, run an experiment, dan feedback and research. Penelitian ini dilakukan sebanyak dua iterasi, pada iterasi pertama pengujian dilakukan dengan usability testing terhadap lima orang responden, sedangkan pada iterasi kedua evaluasi dilakukan dengan heuristic evaluation on mobile interface. Pada iterasi pertama, hasil usability testing menunjukkan bahwa seluruh responden dapat menyelesaikan task yang diberikan, selain itu pada iterasi kedua, telah disajikan daftar evaluasi yang dapat dijadikan acuan perbaikan pada penelitian berikutnya. Hasil akhir penelitian ini berupa prototipe aplikasi mobile Tokocabai yang sudah disesuaikan bagi kebutuhan praktisi dan pengguna., Chili is an agricultural commodity in Indonesia which has a quite high production and demand, but chili prices in the market often experiences price fluctuations which cause losses among chili farmers. Marketplace is considered to be able to help farmers increase profits from selling agricultural commodities, especially chilies. Previously, the Tokocabai marketplace was available for the web version, but the mobile version is not yet available. This study aims to produce a mobile user experience prototype design for the Tokocabai system that suits the needs of practitioners and users. The Lean UX method has four cycle stages, namely declare assumption, create an MVP, run an experiment, and feedback and research. This research was conducted in two iterations, in the first iteration the test was carried out by usability testing on five respondents, while in the second iteration the evaluation was carried out by heuristic evaluation on mobile interface. In the first iteration, the results of usability testing showed that all respondents were able to complete the given task. In the second iteration, an evaluation list was presented which could be used as a reference for improvement in subsequent research. The final result of this research is a prototype of the Tokocabai mobile application that has been adapted to the needs of practitioners and users.
Keyword: cabai, lean ux, marketplace, user experience

Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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