Judul: Development of knowledge base for tropical pests and diseases management of chili pepper (Capsicum annum L.)
Abstrak: Chilli productivity in Indonesia has decreased up to 0.29% in 2010 compared with 2009 (BPS 2012). This decrease mostly was due to pests and diseases attack (BPS 2012). Moreover,improper pesticide usage could be dangerous to human and biological enviroment. This research aims to develop a knowledge base for tropical pests and diseases management of chilli peppers. This knowledge is very critical for supporting various application, such decision support systems, expert systems, consultation systemsrelated to tropical pests and diseases management of chilli peppers. Knowledge base was developed in several stages including problem identification, knowledge acquisition, knowledge representation, knowledge codification, implementation prototype application and testing. Knowledge acquisition was acquired from books, journals, factsheets and human experts. In our system, knowledge is represented as decision trees/decision tables and semantic net. Result of the research is a knowledge base for tropical pests and diseases management of chilli peppers that has been implemented using PostgreSQL.The application prototype was built using PHP on a web platform basis. The knowledge base consists ofpests and diseases identification, knowledge of pests and diseaseshandling. The developed knowledge base consists of 31 types of tropical pests and diseases (6 types of pests and 25 types of diseases)
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Judul: Nutrient management knowledge base development of red chili (Capsicum annum L.) in the tropic reagion based precision farming
Abstrak: Red chili (Capsicum annuum L.) is a strategic agricultural commodities grown in Indonesia. Cultivation of red chili generaly faces many constraints, such as cultivation techniques, pests and plant diseases, post-harvest handling, and fertilization. These constraints can occur because the average of a farmers have insufficient knowledge on cultivation best practices, particularly about fertilization for red chili. The objective of this research is to developed knowledge base of red chili nutrient management in tropical region based on precision farming. This research includes data and information collecting, knowledge acquisition, knowledge base repesentation, knowledge coding and testing. Finally prototype a application development was done to demonsrate the usability of knowledge based developed in this research. Knowledge aquisition was carried out by literature survey and expert interviews. In our system, knowledge is represented as decision trees/decision tables, and related data model. The main result of this research is the knowledge base of red chili nutrient management and cultivation that can be used for several application such as expert systems, decision support systems, and consultation systems for farmers, agroindustry, practitioners, or other agribusiness units. The specific result of the research is a knowledge about how to determine dosage of limestone/sulfur based of pH and texture, animal manure based of organic carbon, singular and compound fertilizers based on the amount of red chili nutrient requirement. The knowledge base system was implemented using PostgreSQL and the application prototype was built using PHP on web platform basis
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Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular