Judul: Modifikasi Incinerator untuk Meningkatkan Faktor Keamanan Saat Pengoperasian
Abstrak: Modifikasi incinerator rancangan Pradipta (2011) diperlukan untuk meningkatkan faktor dan kinerja alat. Modifikasi didasarkan pada hasil penelitian Pradipta (2011) dan penelitian pendahuluan. Modifikasi dilakukan dengan menginsulasi dinding incinerator setebal 2.2 cm menggunakan glasswool, mengubah tinggi cerobong dari 117.5 cm menjadi 200 cm, membuat penyangga pada sistem loading menggunakan pipa dengan diameter 0.5 inchi sepanjang 60 cm, menambah jumlah lubang udara dari 25 lubang menjadi 31 lubang, dan memanfaatkan panas pada ruang pengendapan zat padat untuk memanaskan air menggunakan pipa sepanjang 414 cm dengan diameter 0.5 inchi. Modifikasi yang dilakukan berhasil menurunkan suhu dinding incinerator dimana suhu tertinggi 337.3 °C menjadi 61.4 °C dan rata-ratanya menjadi 42.6 °C dari 114.3 °C sehingga aman bagi operator. Tinggi cerobong setinggi 2 m berhasil membuat asap tidak turun ke bawah sehingga tidak mengganggu kinerja operator dan lingkungan sekitar. Hasil uji kinerja menunjukkan kinerja incinerator mengalami penurunan pada suhu ruang pembakaran. Rata-rata suhu ruang bakar turun dari 212.9 °C menjadi 195.9 °C walaupun suhu tertinggi mencapai 718.2 °C lebih tinggi dibandingkan sebelum dimodifikasi (596.8 °C).
Keyword: incinerator, keamanan, kinerja

Judul: Modification design of incinerator multifunction continue type
Abstrak: Incinerator is an equipment to incinerate trashes with high temperature control to ensure that the combustion process was done completely. The previous design of batch type incinerator which has been designed by Pradipta (2011) has some disadvantages, such as heat transfer system, loading and unloading system, air supply system and utilization of heat energy. So, those design should be modified to improve its performance. The performance parameters of incinerator are temperature of combustion, the rate of combustion, quality of exhaust gases, safety factor, and utilization of heat energy. Modified incinerator has eight sections (combustion chamber, chimney, air inlet, hopper, boundary plate, ash chamber, charcoal chamber, and water heater pipe). The performance test shows that the highest combustion temperature is 689.6 ⁰C, with combustion rate 5.78 kg / hour. The incinerator is safe for operator and the exhaust gasses has good quality. Utilization of thermal energy could increasing water temperature up to 32 ⁰C. Air inlet position was not in the proper place, so combustion temperature could not reach as high as expected. Therefore it need improvement.
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Judul: Graphology Analysis Based on Letter a and t Using Perceptron.
Abstrak: Graphology or handwriting analysis is a method of identifying, analyzing, evaluating, and understanding personality through the strokes and patterns revealed by handwriting. A person who can analyze handwriting is called a graphologist. A graphologists can be subjective in their assesments different graphologist can have different analysis of the same handwriting. Therefore, a computer technology may help to minimize the subjectivity. This research used perceptron to analyze personality based on handwriting. Perceptron is one method of neural network. This research analyze two letters to letter a and t image. Letter a are represented by 135 images, consisting of 81 images as training data and 54 images as testing data. There are 150 images used for t images, consisting of 90 images as training data and 60 images as testing data.There are 5 experiments consisting of 2 experiments for letter a and 3 experiments for letter t. The result is the character of each class letter a and t where each parameters there are 3 classes. The accuracy of letter t and letter a was 55% and 88.89% respectively.
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