Judul: Analisis dan Penerapan Sensor Jarak, Sensor Deteksi Api, dan Sensor Garis pada Fire Fighting Robot
Abstrak: Sensor is a device in a robot to learn things about its surroundings. One of the problems from using sensor is its accuracy when retrieving data. This study developed a fire fighting robot sensor system using ultrasonic range sensor, fire detector sensor, and line sensor. In the process of retrieving data, these sensors require some pre-processing steps in order to obtain data that is equal to the actual data, such as calibration and data smoothing. Data smoothing methods utilized in this study are moving average and simple exponential smoothing. These methods are used to smooth the received realtime data especially in the range sensor HC-SR04 data. The results show that moving average with 5 windows and exponential smoothing with smoothing factor 0.5 can be used to reduce the ripples due to the existence of irregular data. However, both methods may slow down the robot‟s decision making process.
Keyword: sensors, moving average, HC-SR04, fire fighting robot, exponential smoothing, Arduino

Judul: Pengembangan dan Implementasi Sistem Pemadaman Api pada Fire-fighting Robot
Abstrak: Fires are frequent and have caused many casualties. Need a quick response to find and extinguish the fire source before the fire spread. Due to its danger, human intervention in extinguishing the fire needs to be kept as minimum as possible. For that, a robot that can detect the source of the fire and extinguish it at the same time is required. This study aims to develop fire extinguishing systems using the Arduino microcontroller as the main controller. Two fire extinguishing systems were built with two different methods. The first method utilized the wind from a fan, while the second method used a washer pump. Both systems were controlled by a relay. The results showed that the flame sensor can detect the fire at a distance of 30 – 100 cm. The wind-based fire extinguishing system was found to be able to extinguish the fire from a maximum distance of 120 cm, while the water-based fire extinguishing system did not succeed because the water burst from the washer pump was inadequate.
Keyword: flame sensor, Bogor Agricultural University (IPB), fire extinguisher, Arduino

Judul: Revisi marga Ptychopyxis miquel (Euphorbiaceae) di kawasan Malesia
Abstrak: Ptychopyxis adalah salah satu marga dari 317 marga yang termasuk ke dalam suku Euphorbiaceae. pertama kali dipublikasikan oleh Miquel (1860). Marga ini Marga ini pernah dimasukkan kedalam marga lain, yaitu Podadenia, Mallotus dan Clarorivinia. Fakta tersebut menunjukkan bahwa batasan marga Ptychopyxis belum cukup mantap. Persebaran marga ini menurut Van Welzen (1993) jumpai di Thailand, Indochina dan kawasan Malesia, di seluruhnya ada 23 jenis dan 10 jenis diantaranya terdapat di kawasan Malesia. Marga ini umum berperawakan pohon dan berumah dua, tumbuh di hutan hujan dataran rendah sampai pada ketinggian 1500 m dpl. Penelitian taksonomi yang komprehensif tentang marga ini telah dilakukan oleh Airy Shaw pada tahun 1960; sejak saat itu belum ada penelitian taksonomi yang lebih kompre- hensif, khususnya untuk kawasan Malesia. Kini dengan bertambahnya jumlah spesimen koleksi baru, maka tepatlah kiranya dilakukan revisi marga. Tujuan penelitian ini adalah untuk memberikan batasan marga serta jenis-jenisnya yang termasuk dalam Ptychopyxis selain itu diteliti pula hubungan kekerabatan antar jenis dan keterangan-keterangan..dst
Keyword: Herbarium Bogoriense, Podadenia, Mallotus, Clarorivinia