Judul: Sistem Pakar Diagnoisi ADHD (Attention-Deficit/Hyperactivity Disorder) pada Anak Usia Sekolah
Abstrak: Expert System Diagnosis of ADHD in School Aged Children (SPDAPA) is a computer system developed for diagnosing ADHD in children. This system is based on the signs of attitude and behavior of children at home. This study aims to find the facts and knowledge bases to diagnose ADHD (Attention-Deficit/Hyperactivity Disorder) and develop a web based Expert System Diagnosis of ADHD in school-age children. Certainty factor (CF) is the method used to develop this system. This method needs a value of belief and unbelief information from the parameters which are used as a variable count. Therefore process will find the certainty factor. This research methodology uses several stages: frame of mind, an approach system, system design, identification and system model. System development also uses waterfall method that includes the definition and purpose of analysis, software and system design, implementation and unit testing, integration and testing, operation and maintenance of the system. The results of this study show the parameters of ADHD divided into three categories: Inattention, Hyperactivity, and Impulsivity and 24 parameters found from experts acquisition process. Each parameter has a value of belief (MB) and disbelief (MD) with a range of values between 0 to 1, which is a variable to search the value of certainty factor (CF). Finally, the result of this system is certainty factor (CF) with range between -1 to 1.
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Judul: Development Web Based Diagnosis Expert System of Chicken Disease.
Abstrak: Disease is one of many obstacles that could reduce the productivity of poultry. Recognizing early symptoms of the disease, knowing the source of the cause and performing a variety of efforts for prevention are very important to increase the productivity of the poultry. This study is a continuation of previous study done by Haryanto (2006). The system developed by Haryanto still has some limitations : such as desktop-based systems, could not be found division of users to access system, and it’s not using the database so there is no facility for editing disease symptoms. The present availability of computer technology and an easiness of obtaining it has provided great possibility to apply an information system for overcoming the problems mentioned above. For this purpose, Diagnosis Expert System of Chicken Disease was developed in the form of a web based application. Moreover, this study evaluates the effect of changing the membership functions of input variables on the defuzzification results. This system is designed and built using System Development Life Cycle (SDLC) method which consists of 5 stages, investigation systems, system analysis, system design, system implementation, and maintenance system. The results of this research is a chicken diasease diagnosis expert system, a web based application. In the system, the decision making is based on two aspects, which are non fuzzy symptoms is using decision table and for symptoms fuzzy is using Fuzzy Inference System. Keywords : expert system, membership function, defuzzification, system development life cycle.
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Judul: Pembuatan Isoeugenol dari Eugenol Menggunakan Pemanasan Gelombang Mikro
Abstrak: Indonesia merupakan salah satu penghasil minyak cengkeh terbesar di dunia. Pasokan minyak cengkeh Indonesia ke pasar dunia mencapai 60% kebutuhan dunia. Pada tahun 2000, dari 2,080 ton minyak cengkeh yang dipasarkan, Indonesia memasok 1,317 ton (Deptan, 2005). Di negara-negara industri seperti Amerika Serikat, Perancis, Jerman, Italia, dan Inggris, minyak cengkeh digunakan sebagai bahan baku untuk membuat isolat eugenol dan derivatnya seperti isoeugenol dengan nilai tambah yang lebih tinggi. Harga eugenol sebesar Rp 75 000/kg, harga isoeugenol sebesar Rp 95 000/kg (Indesso, 2006) sedangkan harga minyak daun cengkeh Indonesia di pasar Internasional sekitar Rp 25 000/kg (Deptan, 2005). Isoeugenol merupakan senyawa yang banyak digunakan sebagai campuran dalam fragrances dan dalam produk-produk konsumsi harian seperti parfum, produk perawatan kulit, deodoran, sabun, shampo, deterjen serta sebagai bahan intermediet dalam produksi vanilin sintetik. Isoeugenol dihasilkan dari reaksi isomerisasi eugenol. Reaksi isomerisasi eugenol umumnya dilakukan dengan cara mereaksikan eugenol dalam larutan basa KOH atau NaOH pada suhu tinggi selama 5 – 7 jam (Cerveny et al., 1987). Lamanya waktu pemanasan konvensional ini diduga dapat dipersingkat dengan menggunakan pemanasan gelombang mikro. Aplikasi katalis basa yang membutuhkan jumlah yang berlebih dalam reaksi isomerisasi juga dapat digantikan dengan menggunakan katalis RhCl3.3H2O dalam jumlah yang lebih rendah (Chalk, 1977).
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