Judul: The Development of Web Based Geographic Information System for Publication of Plantation Commodities (Case Study ofLombok Barat Plantation)
Abstrak: Plantation crops commonly found in Lombok Barat are coconut, coffee, clove, cashew nut. The plantation sub sector contributed towards the agricultural sector about 18.26 % in 2000, while coconut is the main product of plantation commodities about 76.11 % beside from coffee about 8.06 % and cashew nut about 5.67 %. Others commodities only contributed below 4 % and the smallest one is the cotton about 0.001 %. In this regency plantation commodities are traditionally used for food or livestock feed, but potentially introduce for use ii;i a wide range of industrial applications. The objective of this research is to design the information system for publication of the plantation commodities. The development of a web-based system by integrating GIS and RDBMS could serve two crucial purposes, where internet based geographical data services involve management of spatial and non­spatial (attribute) data. The Internet and Web-based GIS is an effective medium for publication of spatial data. Web-based GIS is not a single technology, there are many component combined to build web based GIS, such as software, hardware. The system development lifecycle (SDLC) is an application of the systems approach to the development of a computer-based information system or subsystem. SDLC consist of a series of task that closely follow the step of the system approach. The system life cycle consist of five phases. The first four (planning, analysis, design, and implementation) are devoted to development. The fifth phase is devoted to use. The result of this research showed the spatial information and non spatial information by using web based information system. Database as one of the development phase designed to support spatial and non spatial information, which are divided into three steps: conceptual design, logical design and physical design. There are some spatial information displayed in the web such as five kinds of plantation areas (Coffee, coconut, cashew nut, tobacco and vanilla) and infrastructures (roads and markets). Plantation areas on Lombok Barat regency founded in almost all of districts, where southern part of regency especially Bayan and Gangga districts founded wide areas for coffee and coconut plantation. Traditional market located on each districts and Narmada districts located six traditional market. Non spatial data resulted from system such as production of plantation and other information about plantation commodities. Web based Geographic Information System (GIS) will bring new approach for querying information and display production area of the plantation commodities which are interactively communicate with user to query and to display map.
Keyword: Plantation commodities, Management information system, Web based gis

Judul: Web-Based Sugarcane Geographic Information System for Farmers at Village Level
Abstrak: Tebu adalah komoditas penting di Indonesia, namun manajemen data lahan tebu pada level petani di desa sangat sulit dilakukan. Sistem Informasi Geografis (SIG) berbasis web diperlukan oleh pemerintah desa dan petani untuk mengelola dan memantau budidaya tebu. Penelitian ini bertujuan untuk membangun SIG petani tebu berbasis web pada level desa yang dapat diakses secara daring. Tahapan penelitian ini terdiri dari persiapan, identifikasi lahan, penyusunan basis data, permodelan sistem, desain web mapping, pembuatan desain interface, validasi dan penyajian. Penyusunan basis data menggunakan menggunakan MySQL untuk menyusun basis data, tabel, bidang, atau fields, relasi, indeks, dan pengguna. SIG petani tebu berbasis web telah diimplementasikan berbasis web dan diuji kepada pengguna di Desa Bedug, Kabupaten Kediri. Berdasarkan uji usabiity dan pengolahan data dengan skala likert terhadap 35 responden yang terdiri dari pengguna, admin dan pemerintah desa diperoleh nilai kelayakan 77.6., Sugarcane are important agriculture commodity in Indonesia. However, manage the sugarcane information in farmers level in village are difficult. WebBased Geographical Information System (GIS) is important to manage and monitor Sugarcane productions in farmer’s level. The aim of this study was to develop webbased GIS for sugarcane farmers in village level. The methodology was used in this research consist of preparation, land identification, database construction, system modelling, web mapping design, user interface design, validation, and delivery. Database was developed using MySQL to construct table, entity relations, indeks and user. GIS was implemented in web based and tested by users in Bedug Village, Kediri Regency, East Java, Indonesia. The result of the usability index from 35 respondents (user, admin and village administrator) was 77.6.
Keyword: database, program test, sugarcane farmer, usability test, web-based GIS

Judul: Penentuan energi aktivasi ion untuk melewati membran teflon pada berbagai larutan elektrolit
Abstrak: Kaseno (1999) menyatakan bahwa dalam teknologi pemisahan, membran adalah bahan yang dapat memisahkan dua komponen dengan cara yang spesifik yaitu menahan atau melewatkan salah satu komponen lebih cepat dari komponen lainnya. Kemampuan pemisahan yang dimiliki oleh membran untuk melewatkan suatu senyawa kimia atau molekul diakibatkan oleh adanya perbedaan sifat fisika atau kimia antara membran dengan senyawa kimia.
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