Judul: Web-based GIS cambodia natural conservation areas information system (Case study: Phnom Prich, Mondulkiri Province, Cambodia)
Abstrak: Internet has become a competent technology for data communication due to distributing technology of the web servers. The data and maps reach to the thin clients with the minimum system requirements at end user and with the click of a button. Such technology has not only popularized the whole world but has moved scientific body to one step up. Geographers and planners, who use map and related information traditionally to plan and manage, have found internet technology of much use since it reduces the cost of data management and information distribution to mass usages. With the advent of GIS and internet technologies, the conventional intricacies to get solutions in time and position have been improved. Users can combine data and information accessed over the intranet/internet with the local data for display, query and analysis. The major goal of this project was to implement a Web-Based GIS that enhances the information system of natural conservation areas. To accomplish the above-stated goal, the project has four objectives such as: developing a geographic information system with web basis (WebGIS) for Cambodia Natural Conservation Areas; called as CNCAIS – Cambodia Natural Conservation Areas Information System, interfaced with GIS for the analysis and visualization of spatial data in vector/image format, permits the combination of GIS data with tabular data, and allow the users to access the databases via standard internet/intranet explorer such as Microsoft Internet Explorer, Opera, or Netscape Navigator. Web-Based GIS CNCAIS performance has been tested by sample end user and the representation of government officer (Ministry of Environment). This process was done to see what are the comments from the users after seeing and using this system. Generally, the users understand how to use web application in order to get the information as they needed thorough intranet since on the web application is provided with common navigation menu; just like when they open other websites on the internet. To cover this problem, Web-Based GIS Cambodia Natural Conservation Areas Information System will be equipped with help tools which consists the manual guide to help the users. Through this system, the users will be able to query and locate plots, roads, national park and other geographic features of interest, as well as view information about them, and create maps on-screen or to print. The users can turn map layers “on” or “off,” depending upon user needs. Also, some of these layers are scale-dependent and can only be viewed when you are zoomed in far enough.
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Judul: Prototipe Sistem Informasi Geografi Pemanfaatan Hutan Tanaman di Indonesia
Abstrak: Indonesia is one of the countries in the world which has tropical forests. In the context of size, Indonesia has 6% of the world's tropical forests (1046 million hectares) and 13% of all the world commercial timber’s supplies. Seeing these various potential of natural resources, the need for utilizing forest products for either timber or non timber forest in an optimal and fair way for public welfare while maintaining its sustainability. One way to do this is by the utilization of forest plantations. Hence, it is necessary to develop a geographic information system that is useful for disseminating information related to the utilization of forest plantations in Indonesia. Kusumasari (2009) and Muhani (2010) have previously developed an application concerning geographical information systems. These studies has provided a visual and interactive information. However, both studies are limited in Bogor area and the input data are hard-code into system, making it difficult to modify new data. Therefore, in this study, a system was developed using ASP.NET as its framework, supporting database systems which separates the data into the database to make it easier to manipulate the data. This study was developed by using spatial data obtained from the Directorate General of Forest Production Development (FDP) and was presented visually in maps and was based on web to facilitate in information search process related to utilization of forest plantations in Indonesia. The main function of this system is to display the overlay of map data on Google Maps, to provide zoom function, and to show the attributes of or the description from an interactive map. This system also provides a search function based on type of report, location, type of crop and type of forest utilization
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Judul: Invers Drazin dari Matriks Toeplitz Singular
Abstrak: Matriks Toeplitz adalah matriks yang setiap unsur pada diagonal utama bernilai sama dan setiap unsur pada subdiagonal yang bersesuaian dengan diagonal utama juga bernilai sama. Matriks singular adalah matriks yang tidak bisa ditentukan inversnya. Akan tetapi, dapat diupayakan untuk ditentukan inversnya menggunakan invers matriks yang diperumum. Invers Drazin merupakan salah satu jenis invers matriks yang diperumum. Pada karya ilmiah ini ditentukan invers Drazin dari matriks Toeplitz singular dengan menggunakan metode Leverrier Faddeev. Kemudian, ditentukan invers Drazin dari matriks Toeplitz singular yang direpresentasikan sebagai penjumlahan segitiga bawah dan segitiga atas matriks Toeplitz berdasar pada teorema Gohberg dan Semencul., Toeplitz matrix is a matrix in with element on the main diagonal has the same value and on the subdiagonal corresponding to the main diagonal also has the same value. Singular matrix is a matrix that has no inverse. However, it can be attempted to determine the inverse using a generalized inverse matrix. Inverse Drazin is a type of generalized matrix inverse. This paper discussed the inverse Drazin for a singular Toeplitz matrix using the Leverrier Faddeev method. Then, the Drazin inverse of the singular Toeplitz matrix which is represented as a sum of products of lower and upper triangular Toeplitz matrix based on Gohberg and Semencul theorem.
Keyword: inverse Drazine, singular Toeplitz matrix