Judul: Pengembangan Aplikasi Mobile Cross-Platform Budidaya Cabai Merah (Capsicum annuum L.)
Abstrak: Today there are many farmers are aware of the internet to search and obtain relevant information for their work using a mobile device. The development of information and mobile-based communication technologies has been accelerating, making the availability of various operating systems on mobile devices such as smartphones, tablets, and gadgets that make it difficult for users when the website that is accessible made only for particular platforms. This research aims to develop mobile application cultivation of red peppers that can be run on multiplatform (cross-platform) mobile devices. The research of this study is a mobile application that is able to adapt in variety of browser operating system on mobile device platforms with a screen resolution size different, using HTML5 and CSS3 techniques. Functional features which have been developed in the system include choosing the chili pepper variety, chili cultivation which includes determination of fertilizer dosage, pest and deasese handly, cultivation knowledge, post-harvest. Module outside of cultivation include farming bussiness analysis, forecasting weather, government policies, and chili pepper price information. Based on the compatibility test is in three native platform browsers (iOS, Android and Windows Phone) at the level of resolution of different screen sizes that can consistently run well.
Keyword: Bogor Agricultural University (IPB), red chilli, mobile application, cross-platform application

Judul: Pengembangan Sistem Pakar Agribisnis Cabai (Capsicum annuum. L) Berbasis Android
Abstrak: The objective of the research was to develop a consultation system for Chili Pepper (Capsicum annuum. L) agribusiness based on android. The method included problem identification, the search knowledge sources, knowledge acquisition, knowledge representation and consultation system development based on android. Knowledge from the expert and other’s materials has been captured and represented to develop the system. The system development was done by using extreme programming (XP) which included the stages of analysis, design and implementation. The results of this research is a chili pepper agribusiness expert system based on android which consists of nine consultation modules like choosing the best cultivar, fertilizing recommendation, land preparation, identified disease, controlling insect pest, farmers income and profit gain, after harvest’s technique, government policy, and price information based on user’s location. The system was running well on the android phone. Users can download the application from http://apps.cs.ipb.ac.id or http://appsriset.ipb.ac.id as a mirror link, then install it on their smartphone or computer tablet .
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Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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